Patents Examined by Norman Morganstern
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Patent number: 5098736Abstract: A method for preparing an electrophotographic photoreceptor comprising the steps of either forming a charge transporting layer comprising aluminum oxide and then forming a charge generating layer having amorphous silicon as the principal component, or forming a charge generating layer having amorphous silicon as the principal component and then forming a charge transporting layer comprising aluminum oxide. The charge transporting layer is formed by means of an ion assisted deposition method.Type: GrantFiled: January 3, 1989Date of Patent: March 24, 1992Assignee: Fuji Xerox Co., Ltd.Inventor: Yuzuru Fukuda
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Patent number: 4994308Abstract: This invention concerns the discovery of a new fluid that promotes the fluorination of polymeric materials more safely, more completely, and more efficiently than the fluids used in the prior art. The new fluid is called "dioxifluorine," which is a mixture of carbon dioxide and fluorine where carbon dioxide is the carrier fluid and fluorine is the reactant.Type: GrantFiled: May 31, 1988Date of Patent: February 19, 1991Assignee: Tarancon CorporationInventor: Gregorio Tarancon
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Patent number: 4987855Abstract: A reactor for laser-assisted CVD has a cylindrical symmetry and includes a high-speed horizontal rotating disk susceptor. The reactor of the invention provides for radiation, preferably UV laser radiation, to be introduced into the reactor radially along an axis. The radiation is constrained to occupy a thin region of space at or immediately adjacent to substrate surfaces upon which deposition is to occur. Preferably the radiation is provided as an annular beam that is reflected uniformly by a conical reflector to provide a relatively thin and uniform sheet of UV radiation that is approximately 0.1 mm to approximately 1.0 mm thick. In addition the reactor provides for Hg vapor, or any other gaseous reactant, to be introduced into the reactor at a same point on the axis as the laser radiation, separately from other reactants, and from a source coaxially disposed and external to the reactor.Type: GrantFiled: November 9, 1989Date of Patent: January 29, 1991Assignee: Santa Barbara Research CenterInventor: William L. Ahlgren
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Patent number: 4950642Abstract: A process for fabricating a superconducting oxide thin film is disclosed which comprises the steps of separately evaporating metal elements, of which the superconducting oxide thin film with a desired stoichiometry is to be composed, to a substrate and simultaneously irradiating the substrate with oxygen plasma generated by RF wave or ECR microwave to form a crystalline oxide film without further annealing.Type: GrantFiled: August 5, 1988Date of Patent: August 21, 1990Assignee: Hitachi, Ltd.Inventors: Yukio Okamoto, Toshiyuki Aida, Katsuki Miyauchi, Kazumasa Takagi, Tokuumi Fukazawa, Shinji Takayama
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Patent number: 4882312Abstract: A superconducting thin film of YBaCuO having a zero resistance transition temperature of at least about 38K is deposited by evaporation on a silicon-containing substrate with a zirconia buffer layer between the film and the substrate.Type: GrantFiled: May 9, 1988Date of Patent: November 21, 1989Assignee: General Electric CompanyInventors: Antonio Mogro-Campero, Larry G. Turner
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Patent number: 4844945Abstract: A process for forming a dielectric patterned layer of any desired geometry on a selected substrate which includes vapor depositing selected reactants on said substrate only in areas thereon which are coextensive with the surface area of an adjacent metal electrode pattern.Type: GrantFiled: May 18, 1988Date of Patent: July 4, 1989Assignee: Hewlett-Packard CompanyInventors: Eldurkar V. Bhaskar, Marzio A. Leban, Michael D. Angerstein
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Patent number: 4806772Abstract: Photoluminescent materials useful for detection of infrared light are prepared using a base material, first and second dopants, barium sulfate and a fusable salt. The base material is an alkaline earth metal sulfide or selenide such as strontium sulfide. Barium sulfate is used to increase the brightness of output light, whereas lithium fluoride is used to allow the material to be fused together. Samarium and europium oxide are used as the first and second dopants for providing electron traps. The photoluminescent material is made according to a process involving heating of the material to a fusing temperature, grinding the material after cooling, and reheating the material to below the fusing temperature, but sufficiently high to repair the crystal surfaces. An infrared sensing device or card is constructed by placing the material in a transparent binder and applying it to a substrate. The material and substrate may then by encapsulated.Type: GrantFiled: April 3, 1987Date of Patent: February 21, 1989Assignee: Quantex CorporationInventor: Joseph Lindmayer
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Patent number: 4803096Abstract: Fabrics are made electrically conductive by contacting the fabric under agitation conditions with an aqueous solution of a pyrrole or aniline compound, and an oxidizing agent and a doping agent or counter ion; and then epitaxially depositing onto the surface of the individual fibers of said fabric the in status nascendi forming polymer of the pyrrole or aniline compound so as to uniformly and coherently cover the fibers with an ordered conductive film of the polymerized pyrrole or aniline compound. Individual fibers and yarns can be similarly treated and then formed into fabrics. Products made by the process are also described.Type: GrantFiled: August 3, 1987Date of Patent: February 7, 1989Assignee: Milliken Research CorporationInventors: Hans H. Kuhn, William C. Kimbrell, Jr.
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Patent number: 4761303Abstract: Multilayer printed circuit boards are fabricated by preparing a first layer in conventional manner by forming a resist image on a copper clad substrate, etching away unwanted copper, removing the resist from the circuit pattern and optionally applying a dielectric mask such as conventional solder mask to selected portions of the circuit pattern. A second layer, and optionally one or more subsequent layers, are fabricated by providing an image of a second circuit pattern in a predetermined location on said first layer, the image being formed using a suspension of cuprous oxide in a curable resin material. The image is cured at least partially and subjected to chemical reduction to convert at least a portion of the cuprous oxide to metallic copper such that the unreduced cuprous oxide in resin serves as a dielectric layer.Type: GrantFiled: November 10, 1986Date of Patent: August 2, 1988Assignee: MacDermid, IncorporatedInventors: Stanley J. Ruszczyk, Donald R. Ferrier, Gary B. Larson, Daniel Gallegos, Steven A. Castaldi
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Patent number: 4734296Abstract: An apparatus and method for the electroless plating of articles. A tank is provided for sequentially containing the respective constituent baths corresponding to the steps of the electroless plating process. An article to be plated, such as a printed circuit board, is supported in the center of the tank immersed in the constituent bath container therein. A pair of inwardly facing parallel manifolds are disposed at opposite ends of the tank. The constituent solution is pumped through a nozzle matrix in the inward facing wall of a first manifold onto the article and is simultaneously sucked away from the opposing side of the article through the matrix of the nozzles defined in the inward facing wall of a second manifold. The direction of pumping is alternated for periodically reversing the direction of suction and impingement.Type: GrantFiled: August 18, 1986Date of Patent: March 29, 1988Assignee: ETD Technology, Inc.Inventor: Charles H. Schramm
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Patent number: 4567115Abstract: A treatment for wood poles, as used for telecommunications and electric power poles, to reduce surface hardening comprises modifying the standard treatment solution by the addition of a polymer of ethylene oxide. A surface active agent is a further possible additive, and reduction of the hexavalent chrome ion in the standard solution is a further modification.Type: GrantFiled: July 30, 1984Date of Patent: January 28, 1986Assignee: Bell CanadaInventor: William P. Trumble
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Patent number: 4524088Abstract: A magnetic brush developing system for electrostatic duplication using a monocomponent developer controls the thickness of the developer on the brush such that the necessary amount of developer is applied to the photosensitive surface which carries the latent electrostatic image. A capacitive sensor in the form of a rigid plate of conductive material is spaced closely adjacent to the surface of the roll on which the magnetic brush is formed. The dielectric constant depends on the thickness of the developer in the magnetic brush and is detected by the capacitive sensor. The capacitance of the sensor is converted, into a pulse train the duty cycle of which is modulated in accordance with the change in capacitance, by a circuit arranged on a circuit board in close proximity to the sensor to provide a compact structure which is not subject to perturbations which could effect the capacitance presented by the sensor.Type: GrantFiled: January 31, 1983Date of Patent: June 18, 1985Assignee: Magnetic Technologies Corp.Inventors: Ben W. Fagen, Jr., Douglas W. Cappon
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Patent number: 4431688Abstract: In a case where filament-like articles (e.g. wires) are dip-coated by upwardly passing the article into a bath of molten metal through the bottom and top vertical openings of a spout containing the molten metal, the article to be coated is wrapped, before it enters the bottom inlet opening in the spout, with a blanket of protective gas at a pressure sufficient to cause the gas to penetrate into the spout simultaneously with the article, to progressively and regularly circulate around the molten metal and to steadily emerge from the upper opening of the spout still effectively shielding the freshly coated article.Type: GrantFiled: October 22, 1981Date of Patent: February 14, 1984Assignee: Kokoku Steel-Wire Ltd.Inventor: Michel Kornmann
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Patent number: 4418097Abstract: A process for reducing high temperature oxidation of graphite electrodes for steel making by coating the electrodes with a siloxane fluid, such as dimethylpolysiloxane. Silicon carbide particles can be suspended in the siloxane fluid to improve coating characteristics.Type: GrantFiled: December 11, 1981Date of Patent: November 29, 1983Assignee: Martin Marietta CorporationInventor: Mohan S. Misra
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Patent number: 4340451Abstract: The gold content of a gold plating bath is replenished by circulating the plating solution through an AuCN containing vessel. The plating solution contains sufficient free cyanide to render the gold soluble by producing the soluble Au(CN).sub.2.sup.- ion.Type: GrantFiled: December 17, 1979Date of Patent: July 20, 1982Assignee: Bell Telephone Laboratories, IncorporatedInventors: Yutaka Okinaka, Catherine Wolowodiuk
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Patent number: 4173586Abstract: A process for cleavage of unsaturated multi-cyclic ketones involves thermal cracking of the liquid ketone at elevated temperatures in the absence of water to produce cyclohexanone and a variety of other cleavage products. Para-toluenesulfonic acid and transition metal oxides are advantageously employed as catalysts.Type: GrantFiled: September 15, 1978Date of Patent: November 6, 1979Assignee: Badische CorporationInventors: Larry W. Payne, Howard E. Miller, James R. Ryffel
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Patent number: 4162266Abstract: Novel trimethyl-acetyl-octalins mixtures are prepared by a Diels-Alder-type reaction involving methyl vinyl ketone and compounds having the structure ##STR1## wherein one of the two lines denoted by dots represents an additional bond.The novel compounds possess unique and unexpected desirable olfactory properties.Type: GrantFiled: June 14, 1976Date of Patent: July 24, 1979Assignee: Givaudan CorporationInventors: Daniel Helmlinger, Peter Naegeli
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Patent number: 4156695Abstract: Described are hexahydrotetramethyl acetonaphthones and mixtures of such substituted acetonaphthones having the generic formula: ##STR1## wherein one of the dashed lines is a carbon-carbon double bond and each of the other of the dashed lines is a carbon-carbon single bond, and, specifically, the novel isomer having the structure: ##STR2## and processes for the preparation of such mixtures and said novel isomer, as well as a known single component of said mixtures and compounds useful as vetiver ingredients in perfumes and perfumed articles.Type: GrantFiled: March 7, 1978Date of Patent: May 29, 1979Assignee: International Flavors & Fragrances Inc.Inventors: William L. Schreiber, James N. Siano, Edward J. Shuster
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Patent number: 4130587Abstract: Disclosed are compounds of the formula ##STR1## wherein the wavy line represents a carbon-carbon single or double bond, possessing organoleptic properties.Type: GrantFiled: December 13, 1977Date of Patent: December 19, 1978Assignee: International Flavors & Fragrances Inc.Inventors: Kenneth K. Light, James M. Sanders, Manfred H. Vock, Edward J. Shuster, Joaquin Vinals, William L. Schreiber, John B. Hall, Denis E. Hruza, Sr., Venkatesh Kamath, Braja D. Mookherjee, Ching Y. Tseng, Mark A. Sprecker
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Patent number: RE33069Abstract: A process and product is presented for obtaining selective areas of distinctive appearance, i.e., matting on synthetic coverings. The process includes, depositing a polymeric coating which contains at least one radiation initiator for polymerization onto at least a first selected area or zone on an expandable or non-expandable support substrate. Next, at least one second coating comprised of a crosslinkable monomer is deposited onto a second selected area on the substrate. This second area or zone may encompass at least a portion of the first area. Thereafter, pre-gelling is performed on the deposited material followed by a graining operation which is carried out over at least a portion of the substrate surface. The synthetic covering in the first zone or area is then polymerized by radiation initiation wherein the particular appearance thereof is fixed to the substrate. Thereafter, gelling is carried out wherein the polymer which has not been fixed by radiation initiation will flow, i.e.Type: GrantFiled: September 11, 1987Date of Patent: September 26, 1989Assignee: Eurofloor S.A.Inventors: Jean-Francois Courtoy, Daniel Marchal