Patents by Inventor Wojciech Slusarek
Wojciech Slusarek has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20070092755Abstract: An OLED device comprises a cathode, a light emitting layer and an anode, in that order, and comprises; (i) a further layer located between the cathode and the light emitting layer, containing (a) 10 vol % or more of a carbocyclic fused ring aromatic compound, and (b) at least one salt or complex of a Group IA, IIA, IIIA and IIB element of the Periodic Table, and (ii) an additional layer, located between the anode and the light emitting layer, containing a compound of Formula (8) wherein: each R independently represents hydrogen or an independently selected substituent, at least one R representing an electron-withdrawing substituent having a Hammett's sigma para value of at least 0.3. Such devices exhibit reduce drive voltage while maintaining good luminance.Type: ApplicationFiled: October 26, 2005Publication date: April 26, 2007Inventors: William Begley, Tukaram Hatwar, Natasha Andrievsky, Wojciech Slusarek
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Publication number: 20070003785Abstract: An organic light-emitting diode device (OLED) comprises a cathode, a light-emitting layer, and an anode in that order, in which there is located a first layer (L1) adjacent to the light-emitting layer on the anode side and a second layer (L2) adjacent to L1 on the anode side, in which: (a) layer L1 comprises a benzidine derivative (B1) having an oxidation potential of 0.8-0.9 V; and (b) layer L2 comprises a benzidine derivative (B2) having an oxidation potential greater than 0.7 V and exhibiting a glass transition temperature, Tg, of greater than 125° C.Type: ApplicationFiled: June 30, 2005Publication date: January 4, 2007Inventors: Wojciech Slusarek, Michele Ricks, Marcel Madaras
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Publication number: 20060251922Abstract: An OLED includes an anode, a light-emitting layer disposed over the anode, and a first electron-injecting layer disposed over the light-emitting layer, wherein the first electron-injecting layer includes at least one organic host material having a reduction potential less than ?1.0 V vs. a Saturated Calomel Electrode and at least one dopant material capable of reducing the organic host material. The OLED also includes a second electron-injecting layer disposed in contact with the first electron-injecting layer, wherein the second electron-injecting layer includes at least one organic material having a reduction potential greater than ?1.0 V vs. a Saturated Calomel Electrode, and a cathode disposed over the second electron-injecting layer.Type: ApplicationFiled: May 6, 2005Publication date: November 9, 2006Inventors: Liang-Sheng Liao, Wojciech Slusarek, Michele Ricks, Ralph Young, Dustin Comfort
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Publication number: 20060240281Abstract: An OLED includes an anode formed over a substrate and a contaminant-scavenging layer formed over the anode, wherein the contaminant-scavenging layer includes one or more organic materials but not a hexaazatriphenylene derivative, each having an electron-accepting property and a reduction potential greater than ?0.1 V vs. a Saturated Calomel Electrode, and wherein the one or more organic materials provide more than 50% by mole ratio of the contaminant-scavenging layer. The OLED also includes an organic electroluminescent unit formed over the contaminant-scavenging layer, wherein the organic electroluminescent unit includes a hole-transporting layer, a light-emitting layer, and an electron-transporting layer, and a cathode formed over the organic electroluminescent unit.Type: ApplicationFiled: April 21, 2005Publication date: October 26, 2006Inventors: Liang-Sheng Liao, Kevin Klubek, Wojciech Slusarek, Tukaram Hatwar
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Publication number: 20060240280Abstract: An OLED includes an anode formed over a substrate, wherein the anode is a non-oxygen-treated anode and an anode modification layer formed in direct contact with the anode, wherein the anode modification layer includes one or more organic materials, each having an electron-accepting property and a reduction potential greater than 0.0 V vs. a Saturated Calomel Electrode, and wherein the one or more organic materials provide more than 50% by mole ratio of the anode modification layer. The OLED also includes an organic electroluminescent unit formed over the anode modification layer, wherein the organic electroluminescent unit includes at least a hole-transporting layer and a light-emitting layer, and a cathode formed over the organic electroluminescent unit.Type: ApplicationFiled: April 21, 2005Publication date: October 26, 2006Inventors: Liang-Sheng Liao, Kevin Klubek, Wojciech Slusarek
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Publication number: 20060188745Abstract: A tandem OLED includes an anode and a cathode. The OLED also includes at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole -transporting layer and one organic light-emitting layer. An intermediate connector is disposed between adjacent electroluminescent units, wherein the intermediate connector includes an n-doped organic layer and an electron-accepting layer, the electron-accepting layer being disposed closer to the cathode than the n-doped organic layer, and wherein the electron-accepting layer includes one or more organic materials, each having a reduction potential greater than ?0.5 V vs. a Saturated Calomel Electrode, and wherein the one or more organic materials constitute more than 50% by volume of the electron-accepting layer.Type: ApplicationFiled: February 23, 2005Publication date: August 24, 2006Inventors: Liang-Sheng Liao, Wojciech Slusarek, Tukaram Hatwar, Michele Ricks, Dustin Comfort
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Publication number: 20050214567Abstract: An electroluminescent device comprises a layer containing a naphthalene compound represented by Formula (1), wherein: each R1 and R2 represents an independently selected substituent provided that adjacent substituents may join to form a ring; p and w independently are 0-3; the amine nitrogens on the naphthalene nucleus are located on separate rings; m and n independently are 0, 1 or 2; each Arb represents an independently selected aromatic group; and each Ara represents an independently selected phenylene, biphenylene or naphthalene group; provided that at least one R1 or R2 substituent of the naphthalene compound represented by Formula (1) is a sterically bulky substituent.Type: ApplicationFiled: March 26, 2004Publication date: September 29, 2005Inventors: Richard Parton, Wojciech Slusarek, Zbyslaw Owczarczyk, Ching Tang
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Publication number: 20050136364Abstract: Solid particle dispersions of blocked developers useful in imaging elements can be made with substantially improved stability to particle growth by dispersing the blocked developer of interest in the presence of a relatively small amount of an additional blocked developer that is structurally similar to the main blocked developer of interest. This additional blocked developer can be combined with the main blocked developer of interest prior to dispersing the main blocked developer of interest, i.e., prior to milling in the case of milled dispersions, and prior to precipitation in the case of pH or solvent precipitated dispersions.Type: ApplicationFiled: December 22, 2003Publication date: June 23, 2005Inventors: David Levy, Mary Brick, Jared Mooberry, Wojciech Slusarek, James Reynolds, Steven Evans
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Publication number: 20050032009Abstract: Improved compounds and base precursors that undergo thermal decomposition are disclosed. Thermal base precursors, and in particular, a novel class of salts of arylsulfonylacetic acids as bleaching agents or promoting for photothermographic use are disclosed. Compositions employing these thermal base precursors are suitable for use in acutance and antihalation systems, bleachable filter dye materials, and in promoting unblocking of various components such as blocked developers, especially in photothermographic elements.Type: ApplicationFiled: August 4, 2003Publication date: February 10, 2005Inventors: Ramanuj Goswami, Wojciech Slusarek, David Levy
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Patent number: 5354650Abstract: Photographic elements are described which contain a release compound that during photographic processing provides an imagewise distribution of a photographically inert compound which can react with a uniform distribution of a second compound contained in the element to form a photographically active compound.Type: GrantFiled: November 5, 1993Date of Patent: October 11, 1994Assignee: Eastman Kodak CompanyInventors: David T. Southby, Daniel L. Kapp, Wojciech Slusarek, Louis E. Friedrich, Zbyslaw R. Owczarczyk, Xiqiang Yang
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Patent number: 5283162Abstract: There are described photographic elements containing novel release compounds which release a blocked photographically useful group, such as a blocked development inhibitor. The blocking group is removed during processing as a result of reaction with sulfite ion contained in one of the processing baths.Type: GrantFiled: May 29, 1992Date of Patent: February 1, 1994Assignee: Eastman Kodak CompanyInventors: Daniel L. Kapp, Wojciech Slusarek, David T. Southby
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Patent number: 5283163Abstract: A photographic development inhibitor releasing compound comprises a releasable development inhibitor group comprising an amide group containing a carbon alpha to the amide functionality which is di- or tri-fluorinated. Such a compound is useful in photographic silver halide materials and processes to enable increased image sharpness and good interimage results.Type: GrantFiled: December 18, 1992Date of Patent: February 1, 1994Assignee: Eastman Kodak CompanyInventors: Gregory J. Lestina, David T. Southby, Wojciech Slusarek, David A. Steele, Teh-Hsuan Chen
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Patent number: 5262291Abstract: There are described color photographic elements containing novel release compounds which rapidly release a photographically useful group, such as a development inhibitor, from a timing group.Type: GrantFiled: July 30, 1992Date of Patent: November 16, 1993Assignee: Eastman Kodak CompanyInventors: Wojciech Slusarek, Daniel L. Kapp
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Patent number: 5055385Abstract: There are described color photographic elements containing novel release compounds which rapidly release a photographically useful group, such as a development inhibitor, from a timing group.Type: GrantFiled: March 15, 1991Date of Patent: October 8, 1991Assignee: Eastman Kodak CompanyInventors: Wojciech Slusarek, John M. Buchanan, Philip T. S. Lau
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Patent number: 5034311Abstract: There are described color photographic elements containing novel release compounds which rapidly release a photographically useful group, such as a development inhibitor, from a timing group.Type: GrantFiled: November 16, 1990Date of Patent: July 23, 1991Assignee: Eastman Kodak CompanyInventors: Wojciech Slusarek, John M. Buchanan, Philip T. S. Lau, David T. Southby
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Patent number: 5026628Abstract: Photographic compound (A) capable of releasing a photographically useful group is represented by the formula: SOL-CAR-LINK-PUG wherein SOL is a water-solubilizing group; CAR is a carrier moiety that, upon reaction with oxidized developing agent, is capable of releasing LINK-PUG and capable of forming a compound that is washed out of the photographic element during photographic processing; LINK-PUG is in turn capable of releasing a photographically useful group (PUG) during photographic processing and LINK-PUG is represented by the formula: ##STR1## wherein X, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and PUG are as defined in the application. The photographic compound (A) enables formation of easily removable compounds in photographic elements and processes that provide images having improved acutance.Type: GrantFiled: February 22, 1990Date of Patent: June 25, 1991Assignee: Eastman Kodak CompanyInventors: William J. Begley, Teh-Hsuan Chen, Kenneth N. Kilminster, Jerrold N. Poslusny, Wojciech Slusarek
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Patent number: 4962018Abstract: A novel photographic development inhibitor releasing coupler (A) comprises a coupler moiety bonded to at least one timing group that enables timing of release of a releasable development inhibitor moiety wherein the releasable development inhibitor moiety contains a --CH.sub.2 --Q group that is bonded directly to the inhibitor moiety and that is a group enabling, upon exposure and processing of a photographic element containing the coupler, reduced interlayer interimage effect without reduced image acutance. The coupler (A) is useful in a color photographic silver halide element and process.Type: GrantFiled: April 6, 1989Date of Patent: October 9, 1990Assignee: Eastman Kodak CompanyInventors: Richard P. Szajewski, Jerrold N. Poslusny, Wojciech Slusarek
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Patent number: 4620006Abstract: Novel 1-(cyanoalkyl)-4-guanylpiperazine acid salts are prepared by reacting novel 1-(cyanoalkyl)piperazines with cyanamide in the presence of an acid. The novel 1-(cyanoalkyl)-4-guanylpiperazine acid salts are advantageously employed to prepare 1-(cyanoalkyl)-4-(2-pyrimidyl)piperazines by reacting them with malonaldehyde in an acidic medium.Type: GrantFiled: August 11, 1982Date of Patent: October 28, 1986Assignee: Eastman Kodak CompanyInventors: Louise O. Sandefur, Wojciech Slusarek, Burton D. Wilson, Cataldo A. Maggiulli
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Patent number: 4620002Abstract: Novel 2-pyrimidyl alkanesulfonates are prepared by reacting a 2-hydroxypyrimidine acid salt with an alkanesulfonyl chloride in the presence of an acid acceptor. The novel 2-pyrimidyl alkanesulfonates are advantageously employed to prepare 1-(cyanoalkyl)-4-(2-pyrimidyl)piperazines by reacting them with a novel 1-(cyanoalkyl)piperazine in the presence of an acid acceptor.Type: GrantFiled: August 11, 1982Date of Patent: October 28, 1986Assignee: Eastman Kodak CompanyInventors: Louise O. Sandefur, Wojciech Slusarek, Burton D. Wilson, Cataldo A. Maggiulli
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Patent number: 4515947Abstract: Novel cyanoalkylpiperazines are prepared by reacting piperazine with a haloalkylnitrile in the presence of an acid acceptor. The novel cyanoalkylpiperazines are advantageously employed to prepare 1-(cyanoalkyl)-4-(2-pyrimidyl)piperazines by reacting them with halopyrimidines in the presence of an acid acceptor.Type: GrantFiled: August 11, 1982Date of Patent: May 7, 1985Assignee: Eastman Kodak CompanyInventors: Louise O. Sandefur, Wojciech Slusarek, Burton D. Wilson, Cataldo A. Maggiulli