Modification Caused By Energy Other Than Light Patents (Class 252/583)
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Patent number: 7118694Abstract: A mixture Ia which comprises a composition IIa consisting of a) 1 to 95% by weight of a solid III, preferably a basic solid III, having a primary particle size of 5 nm to 20 microns, and b) 5 to 99% by weight of a polymeric mass IV obtainable by polymerizing b1) 5 to 100% by weight, based on the mass IV of a condensation product V of ?) at least one compound VI which is capable to react with a carboxylic acid or a sulfonic acid or a derivative thereof or a mixture of two or more thereof, and ?) at least one mole per mole of the compound VI of a carboxylic acid or a sulfonic acid VII which exhibits at least one radically polymerizable functional group, or a derivative thereof or a mixture of two or more thereof and b2) 0 to 95% by weight, based on the mass IV, of a further compound VIII having an average molecular weight (number average) of at least 5000 and having polyether segments in the main or side chain, wherein the proportion by weight of the composition IIa in the mixture Ia is 1 to 100% by weighType: GrantFiled: April 29, 2002Date of Patent: October 10, 2006Assignee: BASF AktiengesellschaftInventors: Bernd Bronstert, Helmut Möhwald
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Patent number: 7046418Abstract: The present invention is directed to a reversible electrodeposition device comprising: a first substrate having an electrically conductive material associated therewith; a second substrate having an electrically conductive material associated therewith; a nucleation layer at least partially covering at least one of the electrically conductive materials of the first and second substrates; an electrochemical medium contained within a chamber positioned between the first and second substrates which comprises: at least one solvent; an anodic electroactive material; and cathodic electroactive material; and compositions and/or concentrations associated with the electrochemical medium which enhances the electrochemical performance of the electrodeposition device.Type: GrantFiled: October 8, 2003Date of Patent: May 16, 2006Assignee: Gentex CorporationInventors: Rongguang Lin, David A. Theiste, Thomas F. Guarr
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Patent number: 7029606Abstract: A dihydrofuran-containing nonlinear optical chromophore having a ?-electron donor group conjugated to the dihydrofuran group through a ?-electron conjugated bridge group. The nonlinear optical chromophore is a hyperpolarizable chromophore that can be used as an electro-optic modulator in electro-optic devices.Type: GrantFiled: July 24, 2001Date of Patent: April 18, 2006Assignee: University of WashingtonInventors: Larry R. Dalton, Kwan-Yue Jen, Timothy Londergan, William Brenden Carlson, Gregory Phelan, Diyun Huang, Daniel Casmier, Todd Ewy, Nicholas Buker
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Patent number: 7014796Abstract: Nonlinear optically active compounds, methods for making nonlinear optically active compounds, compounds useful for making nonlinear optically active compounds, methods for making compounds useful for making nonlinear optically active compounds, macrostructures that include nonlinear optically active components, and devices including the nonlinear optically active compounds and the macrostructures.Type: GrantFiled: January 15, 2003Date of Patent: March 21, 2006Assignee: University of WashingtonInventors: Kwan-Yue Jen, Hong Ma, Sen Liu, Larry R. Dalton
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Patent number: 7008567Abstract: The present invention is directed to a composite having tunable radiation diffracting properties which includes a flexible, water-free polymeric matrix and a crystalline colloidal array of particles having a lattice spacing, the array being embedded in the polymeric matrix and the lattice spacing changing responsive to stress applied to the polymeric matrix, thereby causing the radiation diffracting properties to change, wherein the polymeric matrix, the lattice spacing and the radiation diffracting properties all return to their original state essentially immediately upon removal of the stress. The present inventive composite is preferably made by a process, which involves forming a preliminary hydrogel polymerized crystalline colloidal array (PCCA), dehydrating the PCCA, and then forming a final, encapsulating polymeric matrix.Type: GrantFiled: October 2, 2002Date of Patent: March 7, 2006Assignee: Clemson UniversityInventors: Stephen H. Foulger, Ping Jiang
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Patent number: 7001540Abstract: An electrochromic medium for use in an electrochromic device comprising: at least one solvent; a cathodic electroactive material; an anodic electroactive material; wherein at least one of the cathodic and anodic electroactive materials is electrochromic; and a self-healing cross-linked polymer gel.Type: GrantFiled: September 15, 2003Date of Patent: February 21, 2006Assignee: Gentex CorporationInventors: Leroy J. Kloeppner, Thomas F. Guarr, Kevin L. Ash, Kathy E. Roberts
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Patent number: 6978069Abstract: An electro-optic system in accordance with an embodiment of the present invention comprises a high glass transition temperature (Tg?about 210° C.) polymer matrix featuring aromatic groups on the backbone repeating unit, which hosts a guest, high hyperpolarizability organic NLO chromophore. Electro-optic systems according to embodiments of the present invention exhibit relatively high electro optical activity and low optical loss, and may exhibit optical stability at temperatures exceeding 70° C. Guest-host polymer systems in accordance with embodiments of the present invention may be formed into unique and appropriate shapes such as waveguides.Type: GrantFiled: March 12, 2003Date of Patent: December 20, 2005Assignee: Lockheed Martin CorporationInventors: Rebecca Ellen Taylor, Richard Ronald Barto, Jr., Wendell Douglas Eades
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Patent number: 6972888Abstract: An electrochromic window assembly is disclosed that includes a first substrate and a second substrate that is maintained in a parallel and spaced relation from the first substrate by means of a window frame and spacer. The window assembly further includes an electrochromic device mounted within the airtight chamber formed between the first and second substrates. Electrochromic device 22 may be mounted so as to provide an air chamber between first substrate 12, which is the external substrate, and electrochromic device 22. At least one of the chambers formed between substrates 12 and 14 and electrochromic device 22 may be filled with an insulating gas such as argon. Also disclosed are novel methods for manufacture of an electrochromic device for incorporation into such a window assembly. A novel electrochromic device is also disclosed having electrical bus clips secured about the entire periphery of the electrochromic device.Type: GrantFiled: January 10, 2005Date of Patent: December 6, 2005Assignee: Gentex CorporationInventors: David L. Poll, Kevin L. Ash, David A. Theiste, Thomas F. Guarr, William L. Tonar
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Patent number: 6963437Abstract: The device of the present invention includes an electrochromic element having a transmittance that varies in response to an electrical signal, a base substrate disposed in spaced relation to the electrochromic element, a seal disposed between the base substrate and the electrochromic element, and an optical sensor. The seal, base substrate, and electrochromic element form a sealed cavity therebetween, in which the optical sensor is disposed. According to another embodiment, an electrochromic device is provided that includes a first substrate, an electrochromic medium disposed on the first substrate, a pair of electrodes in contact with the electrochromic medium, a pair of conductive clips, each in electrical contact with a respective one of the electrodes, and two pairs of electrical lead posts for mounting the first substrate to the circuit board. Each pair of lead posts is attached to, and extends from, a respective one of the conductive clips.Type: GrantFiled: September 11, 2003Date of Patent: November 8, 2005Assignee: GENTEX CorporationInventors: Frederick T. Bauer, Joseph S. Stam
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Patent number: 6961168Abstract: Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes.Type: GrantFiled: December 19, 2003Date of Patent: November 1, 2005Assignee: The Regents of the University of CaliforniaInventors: Anoop Agrawal, John P. Cronin, Juan C. L. Tonazzi, Benjamin P. Warner, T. Mark McCleskey, Anthony K. Burrell
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Patent number: 6936193Abstract: A film suitable for use as a light-modulating unit of a suspended particle device light valve, comprising a plurality of particles dispersed in a liquid suspending medium, distributed within an optionally crosslinked matrix polymer. The suspending medium is substantially immiscible with the matrix polymer, has a boiling point greater than about 100° C., has an electrical resistivity of at least about 0.8×106 ohms per square, and has an in endex of refraction at 25° C. which differs from that of the matrix polymer by no more than about 0.002.Type: GrantFiled: April 14, 2003Date of Patent: August 30, 2005Assignee: Research Frontiers IncorporatedInventors: Robert L. Saxe, Steven M. Slovak, Srinivasan Chakrapani, Matthew Forlini
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Patent number: 6930815Abstract: The invention relates to electrochromic side-chain oligomers or polymers which can be used as electrochromic media.Type: GrantFiled: September 18, 2001Date of Patent: August 16, 2005Assignee: Bayer AktiengesellschaftInventors: Horst Berneth, Wolfgang Jacobsen, Serguei Kostromine, Ralf Neigl
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Patent number: 6878312Abstract: A composition, which can be used in an ink jet printing method, can use either a non-polar or a weakly polar material as a functional material, prevents clogging at dispensing time, achieves stable dispensing, and prevents precipitation of content matter during dispensing and phase separation during film formation, a uniform, homogenous functional film formed using this composition and a manufacturing method therefor, as well as an organic EL device or other such display device and a manufacturing method therefor. A composition of the present invention consists of a functional material, and a solvent comprising at least one benzene derivative, which has one or more substituents, and these substituents have 3 or more carbon atoms in total. A functional film of the present invention is formed using the above-mentioned composition. A display device of the present invention comprises luminescent material layers formed using the above-mentioned composition between two electrodes.Type: GrantFiled: March 29, 2000Date of Patent: April 12, 2005Assignees: Seiko Epson Corporation, Cambridge Display Technology LimitedInventors: Sadao Kanbe, Shunichi Seki
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Patent number: 6867894Abstract: A conventional electrochromic mirror comprises an ion conductive layer provided between a transparent electrically conductive substrate and a reflective electrically conductive substrate and containing spacers. The spacers can be perceived when the mirror was viewed. According to the present invention, the difference in refraction index between the spacers and the ion conductive layer is ±0.03 or less. Therefore, the electrochromic mirror having spacers in the ion conductive layer which are hardly perceived can be provided.Type: GrantFiled: February 27, 2003Date of Patent: March 15, 2005Assignees: Nippon Oil Corporation, Kabushiki Kaisha Honda LockInventors: Tsuyoshi Asano, Keizo Ikai, Yoshinori Nishikitani
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Patent number: 6861014Abstract: An electrochromic system having a first electrode disposed on a transparent or translucent substrate, a second electrode, an electrolyte, an electron donor in solution in the electrolyte, and a nanoporous-nanocrystalline film. The nanoporous-nanocrystalline film has a semiconducting metallic oxide with a redox chromophore adsorbed thereto, intermediate the first and second electrodes.Type: GrantFiled: April 29, 2003Date of Patent: March 1, 2005Assignee: University College DublinInventors: Donald Fitzmaurice, S. Rao Nagaraja, Rachel Cinnsealach, Brendan Enright
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Patent number: 6858164Abstract: An image display medium including: a pair of electroconductive layers, at least one of which is light-transmissive and which are opposed to each other to form a cell; and a dispersion contained in the cell and including a silicone oil; a colored particulate material dispersed in the silicone oil; and a polymer soluble in the silicone oil. The polymer preferably includes units obtained from a monomer having an acidic group or a basic group and a monomer having the following formula (1): wherein R1 represents a hydrogen atom or a methyl group; R2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; n is an integer; and x is an integer of from 1 to 3.Type: GrantFiled: January 28, 2002Date of Patent: February 22, 2005Assignee: Ricoh Company LimitedInventor: Masahiro Yanagisawa
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Patent number: 6859297Abstract: The present invention discloses an amorphous material comprising nickel oxide doped with tantalum that is an anodically coloring electrochromic material. The material of the present invention is prepared in the form of an electrode (200) having a thin film (202) of an electrochromic material of the present invention residing on a transparent conductive film (203). The material of the present invention is also incorporated into an electrochromic device (100) as a thin film (102) in conjunction with a cathodically coloring prior art electrochromic material layer (104) such that the devices contain both anodically coloring (102) and cathodically coloring (104) layers. The materials of the electrochromic layers in these devices exhibit broadband optical complimentary behavior, ionic species complimentary behavior, and coloration efficiency complimentary behavior in their operation.Type: GrantFiled: August 7, 2001Date of Patent: February 22, 2005Assignee: Midwest Research InstituteInventors: Se-Hee Lee, C. Edwin Tracy, J. Roland Pitts, Gary J. Jorgensen
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Patent number: 6849392Abstract: Thermally developable compositions such thermographic and photothermographic emulsions include certain triazine-thione compounds. These emulsions can be used in thermally developable materials such as thermographic and photothermographic materials to provide increased image density and shortened development time, and to allow development at lower temperatures. Such materials can have imaging layers on one or both sides of the support.Type: GrantFiled: December 11, 2003Date of Patent: February 1, 2005Assignee: Eastman Kodak CompanyInventors: Doreen C. Lynch, Stacy M. Ulrich, Paul G. Skoug
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Patent number: 6842276Abstract: An electrochromic window assembly is disclosed that includes a first substrate and a second substrate that is maintained in a parallel and spaced relation from the first substrate by means of a window frame and spacer. The window assembly further includes an electrochromic device mounted within the airtight chamber formed between the first and second substrates. Electrochromic device 22 may be mounted so as to provide an air chamber between first substrate 12, which is the external substrate, and electrochromic device 22. At least one of the chambers formed between substrates 12 and 14 and electrochromic device 22 may be filled with an insulating gas such as argon. Also disclosed are novel methods for manufacture of an electrochromic device for incorporation into such a window assembly. A novel electrochromic device is also disclosed having electrical bus clips secured about the entire periphery of the electrochromic device. Also disclosed is the use of steel bus clips for the electrochromic device.Type: GrantFiled: November 14, 2003Date of Patent: January 11, 2005Assignee: Gentex CorporationInventors: David L. Poll, Kevin L. Ash, David A. Theiste, Thomas F. Guarr, William L. Tonar
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Patent number: 6816298Abstract: An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compounds, which has both a structure exhibiting a cathodic electrochromic characteristic and a structure exhibiting an anodic electrochromic characteristic.Type: GrantFiled: February 10, 2003Date of Patent: November 9, 2004Assignee: Nippon Mitsubishi Oil CorporationInventors: Yoshinori Nishikitani, Keizo Iaki, Masaaki Kobayashi, Hiroshi Imafuku, Masaki Minami, Takaya Kubo
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Patent number: 6811830Abstract: A process for manufacture of a photochromic polymeric article comprising: providing a fluid polymerisable composition; subjecting the fluid polymerisable composition to a first curing step to provide a solid article of intermediate hardness; contacting the solid article of intermediate hardness with a photochromic substance; and subjecting the solid article of intermediate hardness to a further curing step to increase the hardness and provide a polymeric article imbibed with the photochromic substance.Type: GrantFiled: September 20, 2002Date of Patent: November 2, 2004Assignee: Sola International Holdings, Ltd.Inventors: Huan Kiak Toh, David Andrew Lewis, Raymond K. Bubner, Bohdan Grzegorz Gieslinski, Fang Chen
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Patent number: 6806989Abstract: Asymmetrical compounds composed of two different heterocyclic and/or carbocyclic rings linked via a conjugated chain containing an uneven number of chain atoms are useful electrochromic compounds and can be used for producing electrochromic devices.Type: GrantFiled: October 23, 2002Date of Patent: October 19, 2004Assignee: Bayer AktiengesellschaftInventor: Horst Berneth
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Publication number: 20040201001Abstract: A film suitable for use as a light-modulating unit of a suspended particle device light valve. The film comprises a matrix polymer and has droplets of a liquid light valve suspension comprising a plurality of particles dispersed in a liquid suspending medium distributed within the matrix. The suspending medium (a) is substantially immiscible with the matrix polymer, (b) has a boiling point at atmospheric pressure greater than about 100° C., (c) has an electrical resistivity of at least about 0.8×106 ohms per square, and (d) has an index of refraction at 25° C. which differs from that of the matrix polymer, measured at substantially the same temperature, by no more than about 0.002.Type: ApplicationFiled: April 14, 2003Publication date: October 14, 2004Applicant: Research Frontiers IncorporatedInventors: Robert L. Saxe, Steven M. Slovak, Srinivasan Chakrapani, Matthew Forlini
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Publication number: 20040188661Abstract: The present invention provides a polymer gel composition including: at least two polymer compounds which interact with each other to form a polymer complex; and a liquid. One of the polymer compounds forms a three-dimensional crosslinked structure, at least one other polymer compound is compatible with the liquid, and at least a portion of the compatible polymer compound is included in the three-dimensional crosslinked structure. Preferably, when the polymer complex is disassembled or decomposed by stimuli, the polymer compound forming the three-dimensional crosslinked structure changes its volume by absorbing or releasing the liquid. The three-dimensional crosslinked structure is preferably in a particle shape. An optical device using such a polymer gel composition is also provided.Type: ApplicationFiled: March 22, 2004Publication date: September 30, 2004Applicant: FUJI XEROX CO., LTD.Inventors: Hiroaki Tsutsui, Masahiro Moriyama, Ryojiro Akashi
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Patent number: 6791738Abstract: The subject invention pertains to electrochromic polymers and polymer electrochromic devices. In a specific embodiment, two complementary polymers can be matched and incorporated into dual polymer electrochromic devices. The anodically coloring polymers in accordance with the subject invention can allow control over the color, brightness, and environmental stability of an electrochromic window. In addition, high device contrast ratios, high transmittance changes, and high luminance changes can be achieved, along with half-second switching times for full color change. Also provided are electrochromic devices such as advertising signage, video monitors, stadium scoreboards, computers, announcement boards, warning systems for cell phones, warning/information systems for automobiles, greeting cards, electrochromic windows, billboards, electronic books, and electrical wiring. The subject invention also provides for the use of complementary electrochromic polymers in the manufacture of electrochromic devices.Type: GrantFiled: November 21, 2002Date of Patent: September 14, 2004Assignee: University of FloridaInventors: John R. Reynolds, Kyukwan Zong, Irina Schwendeman, Gursel Sonmez, Philippe Schottland, Avni A. Argun, Pierre-Henri Aubert
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Publication number: 20040157177Abstract: The present disclosure relates to aqueous dispersions of silver (carboxylate-azine toner) particles wherein the azine content of the particles is from about 0.01 to 10% by weight relative to silver carboxylate. The carboxylates are typically silver salts of long chain fatty acids and the azine toners are the compounds that function as development accelerators and toning agents such as phthalazine. These silver (carboxylate-azine) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.Type: ApplicationFiled: December 23, 2003Publication date: August 12, 2004Inventors: Mark Lelental, Peter J. Ghyzel, John W. Boettcher, James L. Wakley, David A. Dickinson, Joe E. Maskasky, Roger L. Klaus, Victor P. Scaccia, Thomas Blanton
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Patent number: 6773637Abstract: The present invention is directed to a thermochromic temperature sensitive composition used to detect the prevailing temperature, and particularly, to detect when the temperature is within a particular range. When the temperature is within that range, the composition undergoes a color change that is visible to the observer.Type: GrantFiled: May 1, 2000Date of Patent: August 10, 2004Inventors: Gail D. DiSalvo, John Cusick
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Patent number: 6767481Abstract: This invention relates to electrochromic fluids based on electrochromic systems containing at least one oxidizable substance RED1 and at least one reducible substance OX2 linked covalently by a bridge that are suitable for use in electrochromic devices.Type: GrantFiled: May 17, 2002Date of Patent: July 27, 2004Assignee: Bayer AktiengesellschaftInventors: Horst Berneth, Serguei Kostromine
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Patent number: 6755993Abstract: A method for the manufacture of an electrochromic system using a nanoporus-nanocrystalline film comprising a semiconducting metallic oxide having a redox chromophore adsorbed thereto.Type: GrantFiled: April 25, 2003Date of Patent: June 29, 2004Assignee: University College DublinInventors: Donald Fitzmaurice, S. Rao Nagaraja, Rachel Cinnsealach, Brendan Enright
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Publication number: 20040119057Abstract: Thermochromic compositions that include combinations of at least one color former and at least one Lewis acid in a polymer mixture are disclosed. The thermochromic compositions reversibly change appearance from substantially transparent to substantially non-transparent above a lower critical solution temperature.Type: ApplicationFiled: October 1, 2003Publication date: June 24, 2004Applicant: Spectra Systems CorporationInventors: Nabil M. Lawandy, Timothy J. Driscoll, Charles M. Zepp
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Patent number: 6747780Abstract: Large contrast ratio and rapid switching laminated electrochromic (EC) polymer device includes transparent electrode, cathodic EC polymer, gel electrolyte, and counter-electrode. Preferably the cathodic EC polymer is a poly(3,4-propylenedioxythiophene) derivative, PProDOT-Me2. Counter-electrode is a conductive coating deposited on transparent substrate, with preferred coatings including gold and highly conductive carbon. Lithography and sputtering can be employed to pattern a gold layer, while screen printing can be employed to similarly pattern graphite. Empirical studies of preferred device indicate a color change of high contrast ratio of transmittance (>50% T) is rapidly (0.5-1s) obtained upon applied 2.5V, repeatable to at least 10,000 times, as estimated by electrochemistry. Dual layer EC devices including PProDOT-Me2 are also disclosed, as are methods for synthesizing preferred EC polymers.Type: GrantFiled: June 25, 2002Date of Patent: June 8, 2004Assignee: University of WashingtonInventors: Chunye Xu, Minoru Taya
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Patent number: 6735011Abstract: An electrochromic medium for use in a normally operating electrochromic device comprising an anodic material and a cathodic material wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic, an additive, and means associated with the additive for maintaining a colorless or nearly colorless electrochromic medium while the electrochromic medium is in a high transmission state relative to an electrochromic medium without the additive.Type: GrantFiled: November 25, 2002Date of Patent: May 11, 2004Assignee: Gentex CorporationInventors: Jeffrey R. Lomprey, Thomas F. Guarr
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Patent number: 6727317Abstract: Unique transparent plastic (preferably though not necessarily polypropylene) articles that can be tailored to become opaque when exposed to a sufficiently high temperature and which returns to substantially the same transparency level upon cooling are provided. Such formulations include polymeric constituents that exhibit melting temperatures well below that for the majority clarified polypropylene, and thus which appear to become amorphous upon exposure to temperatures above such a lower melting temperature, thereby affecting the crystalline formation of the clarified polypropylene to the extent that opacity dominates the appearance thereof. Such lower melting temperature polymeric constituents include species such as low melt flow (up to 10) metallocene polyethylene and/or low density polyethylene, both of which exhibit melting temperatures of from about 60 to about 100° C., well below the typical polypropylene melting temperatures of roughly about 150° C.Type: GrantFiled: January 25, 2002Date of Patent: April 27, 2004Assignee: Milliken & CompanyInventors: Jenci Kurja, Stephane Berghmans
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Publication number: 20040061097Abstract: An electrochromic medium for use in an electrochromic device comprising:Type: ApplicationFiled: September 15, 2003Publication date: April 1, 2004Inventors: Leroy J. Kloeppner, Thomas F. Guarr, Kevin L. Ash, Kathy E. Roberts
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Publication number: 20040056239Abstract: A method for the manufacture of an electrochromic system using a nanoporous-nanocrystalline film comprising a semiconducting metallic oxide having a redox chromophore adsorbed thereto.Type: ApplicationFiled: April 25, 2003Publication date: March 25, 2004Inventors: Donald Fitzmaurice, S. Nagaraja Rao, Rachel Cinnsealach, Brendan Enright
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Patent number: 6699651Abstract: Improved compounds and base precursors that undergo thermal decomposition are disclosed. Thermal-dye-bleach agents, and in particular, a novel class of salts of arylsulfonylacetic acids as bleaching agents for photothermographic use are disclosed. Photothermographic elements employing these thermal-dye-bleach agents are suitable for use as acutance and antihalation systems, bleachable filter dye materials, and in promoting unblocking of various components such as blocked developers, especially in in photothermographic elements.Type: GrantFiled: November 20, 2002Date of Patent: March 2, 2004Assignee: Eastman Kodak CompanyInventors: Ramanuj Goswami, David H. Levy
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Patent number: 6661559Abstract: Electrochromic compositions suitable for use in electrochromic media in electrochromic devices contain minimally two electrochromic compounds of the same redox type, whose redox potentials are greater than 30 mV. The lower redox potential electrochromic compounds makes a large contribution to the absorbancy of the electrochromic medium despite being present in only minor concentration.Type: GrantFiled: August 2, 2001Date of Patent: December 9, 2003Assignee: Gentex CorporationInventors: Harlan J. Byker, Thomas F. Guarr, Derick D. Winkle
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Patent number: 6657768Abstract: The electrochromic devices have an ion conductive layer formed by curing a composition comprising a bipyridinium compound represented by the formula a specific metallocene compound and a precursor of a polymeric solid electrolyte, between two electrically conductive substrates, at least one of which is transparent.Type: GrantFiled: May 3, 2002Date of Patent: December 2, 2003Assignee: Nippon Mitsubishi Oil CorporationInventors: Yoshinori Nishikitani, Masaaki Kobayashi, Hiroshi Imafuku
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Patent number: 6652956Abstract: A method and structure to form a conductive pattern on a ceramic sheet deposits a photosensitive conductive material on a carrier and exposes a pattern of x-ray energy on the material and sinters the carrier and the material to the ceramic sheet so that only the conductive pattern of the material remains on the ceramic sheet. The structure has a conductive patterned material which includes a photosensitive agent.Type: GrantFiled: July 24, 2001Date of Patent: November 25, 2003Assignee: International Business Machines CorporationInventors: Lawrence A. Clevenger, David B. Goland, Louis L. Hsu, Joseph F. Shepard, Jr., Subhash L. Shinde
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Patent number: 6647688Abstract: A thermoset fluorescent pigmentary vinyl is provided which is vinyl siding and trim components having luminescent characteristics. A thermoset fluorescent pigment which is charged by sunlight during the daytime hours and emits light during the nighttime hours.Type: GrantFiled: September 1, 2001Date of Patent: November 18, 2003Inventors: Brenda S. Gaitan, Kevin L. Ballard
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Publication number: 20030205701Abstract: In various embodiments, chromophores are described that include novel electron acceptors, novel electron donors, and/or novel conjugated bridges that are useful in nonlinear optical applications. In some embodiments, the present invention provides chromophore architectures wherein a chromophore contains more than one electron acceptor in electronic communication with a single electron donor, and/or more than one electron donor in electronic communication with a single electron acceptor. Also described is processes for providing materials comprising the novel chromophores and polymer matrices containing the novel chromophores. Electro-optic devices described herein contain one or more of the described electron acceptors, electron donors, conjugated bridges, or chromophores.Type: ApplicationFiled: May 16, 2003Publication date: November 6, 2003Inventors: Diyun Huang, Tim Londergan, Galina K. Todorova, Jingsong Zhu
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Publication number: 20030201430Abstract: An electrochromic system having a first electrode disposed on a transparent or translucent substrate, a second electrode, an electrolyte, an electron donor in solution in the electrolyte, and a nanoporous-nanocrystalline film. The nanoporous-nanocrystalline film has a semiconducting metallic oxide with a redox chromophore adsorbed thereto, intermediate the first and second electrodes.Type: ApplicationFiled: April 29, 2003Publication date: October 30, 2003Inventors: Donald Fitzmaurice, S. Nagaraja Rao, Rachel Cinnsealach, Brendan Enright
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Publication number: 20030201429Abstract: The synthesis of novel, high &mgr;&bgr; electro-optical chromophores is described. These chromophores are polymerizable with a host polymer or copolymer. The chromophore polymerizable groups comprise epoxy, thioepoxy, oxetane and thiooxetane material which undergo a ring opening polymerization reaction in the presence of a cationic photoinitiator and actinic radiation. The high &mgr;&bgr; chromophores, mixed with a selected host polymer, copolymer, oligomer, or one or a plurality of polymerizable monomers, can be used to prepare optical waveguides and other optical elements and/or devices. The electro-optical chromophores of the invention can be used as a replacement for LiNbO3 in the formation of electro-optical devices, particularly electro-optical modulators.Type: ApplicationFiled: April 30, 2002Publication date: October 30, 2003Inventors: Mingqian He, Paul J. Shustack, Jianguo Wang
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Patent number: 6635194Abstract: An electrochromic medium for use in an electrochromic device comprising: at least one solvent; a cathodic electroactive material; an anodic electroactive material; wherein at least one of the cathodic and anodic electroactive materials is electrochromic; and a self-healing cross-linked polymer gel.Type: GrantFiled: August 28, 2001Date of Patent: October 21, 2003Assignee: Gentex CorporationInventors: Leroy J. Kloeppner, Thomas F. Guarr, Kevin L. Ash, Kathy E. Roberts
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Publication number: 20030189193Abstract: Compounds of formula (I), methods of making and method of using (including optical compositions and devices) are provided.Type: ApplicationFiled: August 26, 2002Publication date: October 9, 2003Inventors: Robert M. Mininni, Yousef Mohajer, Anthony Garito, Anna A. Panackal, Joseph A. Virgilio
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Publication number: 20030183812Abstract: A nonlinear optical chromophore having the formula D-&pgr;-A, wherein &pgr; is a &pgr; bridge including a thiophene ring having oxygen atoms bonded directly to the 3 and 4 positions of the thiophene ring, D is a donor, and A is an acceptor.Type: ApplicationFiled: March 24, 2003Publication date: October 2, 2003Inventors: Diyun Huang, Baoquan Chen
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Patent number: 6623665Abstract: The present invention relates to nonlinear optical (NLO) materials, compositions thereof and NLO devices using polymeric matrices supporting a second order NLO material defined by the formula ED—B—EW (I) where ED is an electron donating moiety, B is a bridging moiety, and EW is the electron withdrawing moiety (terminal acceptor group) defined by formula II, where C1 is a carbon atom linked through a double bond to a cyclic or an acylic carbon atom in the bridging moiety, and A1, A2, A3 or A4are the same or different from one another, each of which is an electron withdrawing group such as CN, COR, COOR, COOH or CH═C(R)2 where R is a C1-6 alkyl.Type: GrantFiled: February 22, 2000Date of Patent: September 23, 2003Assignee: Lockheed Martin CorporationInventor: Susan P. Ermer
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Patent number: 6608228Abstract: Disclosed are highly efficient multiphoton absorbing compounds and methods of their use. The compounds generally include a bridge of pi-conjugated bonds connecting electron donating groups or electron accepting groups. The bridge may be substituted with a variety of substituents as well. Solubility, lipophilicity, absorption maxima and other characteristics of the compounds may be tailored by changing the electron donating groups or electron accepting groups, the substituents attached to or the length of the pi-conjugated bridge. Numerous photophysical and photochemical methods are enabled by converting these compounds to electronically excited states upon simultaneous absorption of at least two photons of radiation. The compounds have large two-photon or higher-order absorptivities such that upon absorption, one or more Lewis acidic species, Lewis basic species, radical species or ionic species are formed.Type: GrantFiled: April 15, 1999Date of Patent: August 19, 2003Assignee: California Institute of TechnologyInventors: Brian Cumpston, Matthew Lipson, Seth R. Marder, Joseph W. Perry
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Patent number: 6605239Abstract: An electrochromic system having a first electrode disposed on a transparent or translucent substrate and a second electrode, an electrolyte, an electron donor and a nanoporous-nanocrystalline film of a semiconducting metallic oxide having a redox chromophore adsorbed thereto being intermediate the first and second electrodes. Such a system has a very rapid electrochromic effect.Type: GrantFiled: September 12, 2001Date of Patent: August 12, 2003Assignee: University College DublinInventors: Donald Fitzmaurice, S. Rao Nagaraja, Rachel Cinnsealach, Brendan Enright
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Patent number: 6599448Abstract: The present invention provides a radio-opaque composition including a polymer or monomer, wherein the polymer or monomer has a non-leachable radio-opaque moiety. The non-leachable radio-opaque moiety is covalently attached to the polymer or monomer.Type: GrantFiled: May 10, 2000Date of Patent: July 29, 2003Assignee: Hydromer, Inc.Inventors: Joseph A. Ehrhard, Jr., Patrick Hennessey