Patents by Inventor Janglin Chen
Janglin Chen 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: 20040033429Abstract: An imaging element comprising: a support; at least one image forming layer; and an antistat layer, wherein said antistat layer comprises: a chlorinated polyolefin and a conductive agent.Type: ApplicationFiled: May 19, 2003Publication date: February 19, 2004Inventors: Richard A. Castle, Janglin Chen, Debasis Majumdar
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Publication number: 20030207199Abstract: A planographic printing element suitable to receive and bond with a subsequently applied hydrophilic layer comprises a substrate layer such as polyester film or paper having coated thereon an adhesion layer, said adhesion layer comprising a polymer having a glass transition temperature of less than 15° C. and containing functional groups such as hydroxyl, epoxy or glycidyl capable of reacting with the hydrophilic layer. The polymer may be a terpolymer of a hydroxyalkylacrylate, an alkyl acrylate and an aminoalkylmethacrylate. The polymer may be mixed with gelatin and the mixture applied to the substrate as a coating.Type: ApplicationFiled: November 20, 2002Publication date: November 6, 2003Applicant: Eastman Kodak CompanyInventors: John M. Higgins, Ian M. Newington, Charles C. Anderson, Harjit S. Bhambra, Janglin Chen
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Publication number: 20030134236Abstract: A composition for an antistat layer comprising: a chlorinated polyolefin; a conductive agent; and a solvent.Type: ApplicationFiled: December 26, 2001Publication date: July 17, 2003Inventors: Debasis Majumdar, Richard A. Castle, Janglin Chen
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Publication number: 20030134212Abstract: An imaging element comprising: a support; at least one image forming layer; and an antistat layer, wherein said antistat layer comprises: a chlorinated polyolefin and a conductive agent.Type: ApplicationFiled: December 26, 2001Publication date: July 17, 2003Applicant: Eastman Kodak CompanyInventors: Richard A. Castle, Janglin Chen, Debasis Majumdar
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Patent number: 6517947Abstract: An imaging support comprising: a polyester support; an adhesive layer superposed to said support; and on the adhesive layer: an amine modified gelatin subbing layer, the amine modified gelatin having the formula: wherein Gel is a gelatin polypeptide, is a carbonyl group from a free carboxyl group in aspartic acid or a glutamic acid moiety in said polypeptide, and G is wherein each R is independently hydrogen or a primary or secondary alkyl group of one to about four carbon atoms, n is a positive integer having a value of one to about four, and T is a hydrogen or said modified gelatin being further characterized by having from 1% to about 40% of the free carboxyl groups in aspartic and glutamic acid moieties in said polypeptide being substituted with G-groups; wherein said support has been annealed at a temperature that is 50 to 5° C. less than the glass transition temperature of the support for at least 6 hours.Type: GrantFiled: May 14, 2001Date of Patent: February 11, 2003Assignee: Eastman Kodak CompanyInventors: Charles L. Bauer, Janglin Chen, Kenneth G. Harbison, Hwei-Ling Yau
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Publication number: 20020122951Abstract: An imaging support comprising: a polyester support; an adhesive layer superposed to said support; and on the adhesive layer: an amine modified gelatin subbing layer, the amine modified gelatin having the formula: 1Type: ApplicationFiled: May 14, 2001Publication date: September 5, 2002Applicant: Eastman Kodak CompanyInventors: Charles L. Bauer, Janglin Chen, Kenneth G. Harbison, Hwei-Ling Yau
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Patent number: 6407160Abstract: The present invention relates to a polymer particle having a wax phase and a second phase. The wax phase includes a wax having a melting point of greater than 30° C. and comprising greater than 80% by weight of the wax phase. The second phase, free of ionic charge groups, includes a mono-alpha, beta-ethylenically unsaturated monomer free of ionic charge groups capable of addition polymerization to form a water soluble homopolymer including from 1 to 40% by weight of the second phase and a mono-alpha, beta-ethylenically unsaturated monomer capable of addition polymerization to form a water insoluble homopolymer.Type: GrantFiled: December 28, 1998Date of Patent: June 18, 2002Assignee: Eastman Kodak CompanyInventors: Yongcai Wang, James L. Bello, Janglin Chen, Dwight W. Schwark
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Publication number: 20010003125Abstract: The present invention is a polymer particle which includes a wax phase containing a wax having a melting point of greater than 30° C. and a polymer phase. The wax in the wax phase contains greater than 80% by weight of the wax phase. The polymer phase is composed of a mono-alpha, beta-ethylenically unsaturated monomer free of ionic charge groups capable of addition polymerization to form a water soluble homopolymer and a mono-alpha, beta-ethylenically unsaturated monomer capable of addition polymerization to form a water insoluble homopolymer. The mono-alpha, beta-ethylenically unsaturated monomer free of ionic charge groups capable of addition polymerization to form a water soluble homopolymer constitutes from 1 to 40% by weight of the polymer phase.Type: ApplicationFiled: December 28, 1998Publication date: June 7, 2001Inventors: YONGCAI WANG, JAMES L. BELLO, JANGLIN CHEN, DWIGHT W. SCHWARK
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Patent number: 6187521Abstract: The present invention is an imaging element which includes a support, an image forming layer superposed on the support; and at least one layer superposed on the support. The at least one layer superposed on the support is formed from a non-aqueous coating composition of a composite wax particle composed of a wax phase and a non-crosslinked polymer phase and an organic solvent. The wax phase includes a wax having a melting point of greater than 30° C. The wax comprises greater than 80% by weight of the wax phase. The wax phase to non-crosslinked polymer phase ratio is greater than 30/70 and less than 90/10.Type: GrantFiled: December 28, 1998Date of Patent: February 13, 2001Assignee: Eastman Kodak CompanyInventors: Yongcai Wang, Janglin Chen, Dwight W. Schwark, James L. Bello
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Patent number: 6177239Abstract: The present invention is an imaging element which includes a support, an image forming layer superposed on the support and at least one layer superposed on the support. The at least one layer is formed from a non-aqueous coating composition composed of a composite wax particle having a wax phase and a non-crosslinked polymer phase. The wax phase includes a wax having a melting point of greater than 30° C., the wax comprising greater than 80% by weight of the wax phase. The at least one layer has a dry coating weight of from 1 to 300 mg/m2.Type: GrantFiled: December 28, 1998Date of Patent: January 23, 2001Assignee: Eastman Kodak CompanyInventors: Yongcai Wang, Janglin Chen, Dwight W. Schwark
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Patent number: 6174661Abstract: The present invention is a photographic element containing a support, at least one light sensitive emulsion layer superposed on the first side of the support, and an outermost lubricant layer superposed on the support. The outermost layer includes more than 80 percent by weight of a composite wax particle. The composite wax particle includes a wax phase and a non-crosslinked polymer phase. The wax phase is greater than 80 percent by weight of a wax which has a melting point of greater than 30° C. In one embodiment the lubricant layer contains a fluoro containing compound. It is envisioned that the lubricant layer overlies a transparent magnetic layer. The total coating weight of the composite wax particle in the lubricant layer is in the range of from 1 to 300 mg/m2. Preferably, the fluoro compound contains at least one type of an ionic group or a nonionic group.Type: GrantFiled: December 28, 1998Date of Patent: January 16, 2001Assignee: Eastman Kodak CompanyInventors: Janglin Chen, Yongcai Wang, Gregory W. Keyes, Richard A. Castle
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Patent number: 6048677Abstract: The present invention is a photographic element which includes a support having a first side and a second side, at least one light sensitive emulsion layer superposed on the first side of the support, a transparent magnetic layer superposed on the second side of the support. The transparent magnetic layer includes magnetic particles and a film forming binder. An outermost abrasive lubricant layer overlies the transparent magnetic layer. The outermost abrasive lubricant layer is formed from a non-aqueous coating composition of a composite wax particle, an abrasive particle and an organic solvent. The composite wax particle is composed of a wax phase having a wax having a melting point of greater than 30.degree. C. the wax being greater than 80% by weight of the wax phase and a non-crosslinked polymer phase free of chemically bonded acid groups.Type: GrantFiled: December 28, 1998Date of Patent: April 11, 2000Assignee: Eastman Kodak CompanyInventors: Janglin Chen, Yongcai Wang, Vito A. DePalma, Robert O. James
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Patent number: 6037108Abstract: A support for an imaging element is described, which support comprises a polyester polymeric film having coated thereon a subbing layer comprising gelatin and a multi-hydric organic compound having at least three hydroxyl groups, which gelatin subbing layer coated support has been subjected to a heat treatment to reduce the core-set curling tendency of the polymeric film. Imaging elements for use in an image-forming process is also described, which elements comprise a gelatin subbing layer coated polyester polymeric film support as described above, and an image-forming layer coated on the subbed support. A method for forming a heat-tempered, gelatin-subbed support for an imaging element is also described, comprising coating a subbing layer comprising gelatin and a multi-hydric organic compound having at least three hydroxyl groups on a polyester polymeric film, and subjected the coated film to heat treatment to reduce the core-set curling tendency of the polymeric film.Type: GrantFiled: April 27, 1998Date of Patent: March 14, 2000Assignee: Eastman Kodak CompanyInventors: Janglin Chen, Richard A. Castle, Yongcai Wang
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Patent number: 5968646Abstract: The present invention comprises a polyester film support in which the surface has been subjected to an energetic treatment with nitrogen plasma to produce amine groups on the polyester surface. The treated surface is then coated with a dilute solution of amine reactive hardener and gelatin. After drying the hardener/gelatin coated support a photographic emulsion is coated on the surface. The resulting film element has excellent adhesion of the photographic emulsion after photoprocessing, and it is safer to coat and handle than previously known methods involving grafting of hardener directly to the support.Type: GrantFiled: January 19, 1996Date of Patent: October 19, 1999Assignee: Eastman Kodak CompanyInventors: Jeremy M. Grace, Louis J. Gerenser, Richard A. Castle, Janglin Chen, Edgar E. Riecke
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Patent number: 5895744Abstract: Method and apparatus for making thermoplastic web from polyester or polyester blends for subsequent aqueous coating without requirement of an undercoat or primer coat for adhesion of subsequent coatings. Feedstock pellets of polymer, such as polyethylene terephthalate or polyethylene naphthalate, are melted in a screw extruder. Molten polymer is extruded from an extrusion die as a thick, high-viscosity ribbon, which is tempered and stretched in both the machine direction and the transverse direction to form a web of biaxially-oriented polymer of the desired width and thickness. The web is heated to a temperature above T.sub.g to set the biaxial orientation and then is glow discharge treated by passing it through an in-line glow discharge apparatus at atmospheric pressure wherein a stable glow discharge is produced in a gas mixture containing helium between two electrodes connected by an alternating power source operating at a voltage between 0.5 kV and 20 kV at a frequency between 60 Hz and 40 MHz.Type: GrantFiled: February 28, 1997Date of Patent: April 20, 1999Assignee: Eastman Kodak CompanyInventors: Janglin Chen, Gerald G. Reafler, David A. Glocker, Mark M. Romach, Richard C. Soper, Evelio A. Perez-Albuerne
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Patent number: 5709984Abstract: A coating composition useful for forming an electrically conductive layer on a substrate is disclosed, said composition comprising a liquid medium containing: a) a vanadium oxide gel, b) a film-forming binder, and c) a conductivity-increasing amount of a volatile aromatic compound comprising an aromatic ring substituted with at least one hydroxy group or a hydroxy substituted substituent group. Further embodiments of the invention disclose a composite support for an imaging element, which composite support comprises a polymeric film having coated thereon an electrically conductive layer, wherein the electrically conductive layer has been formed by applying a coating of the coating composition of the invention, and drying the coating.Type: GrantFiled: October 31, 1996Date of Patent: January 20, 1998Assignee: Eastman Kodak CompanyInventors: Janglin Chen, Richard A. Castle, Karen E. Gleasman
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Patent number: 5700577Abstract: The present invention is a biaxially oriented polyester film support in which the surface has been subjected to an energetic treatment to produce amine groups on the polyester surface. The treated surface is then coated with a dilute amine reactive hardener solution. After drying the hardener solution a photographic emulsion is coated to the surface. The resulting film element has better adhesion of the photographic emulsion after photoprocessing than previous known methods.Type: GrantFiled: April 24, 1996Date of Patent: December 23, 1997Assignee: Eastman Kodak CompanyInventors: Jeremy Grace, Louis J. Gerenser, Janglin Chen, Edgar E. Riecke
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Patent number: 5639589Abstract: A polyester photographic film support having a surface coated with a subbing layer which comprises a mixture of gelatin and a polymer where the gelatin to polymer ratio is less than 97:3 and such that the combination of dry coverage and weight fraction of gelatin in the mixture satisfies the equation: C+1.32.times.Z.gtoreq.0.825, where C is dry coverage in g/m.sup.2 and Z is the weight fraction of gelatin, and the polymer comprises:a) from 1 to 60 weight percent of recurring units derived from a vinyl monomer having a primary amine addition salt component or aminostyrene addition salt component;b) from 0 to 50 weight percent of recurring units derived from a hydrophilic vinyl monomer; andc) from 20 to 98 weight percent of recurring units derived from a hydrophobic nonionic vinyl monomer.Type: GrantFiled: May 9, 1996Date of Patent: June 17, 1997Assignee: Eastman Kodak CompanyInventors: Charles Leo Bauer, Janglin Chen, David Appler Glocker, Melinda Gay Messick
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Patent number: 5618659Abstract: The present invention is a polyester film base which has a surface approximately 5 nm thick. The surface of the film base has been altered to include about 6 to 15 atomic percent nitrogen in the form of imines, secondary amines and primary amines in the ratio of about 1:1:2. The invention also includes a film base whose surface includes oxygen in the form of hydroxyl, ether, epoxy, carbonyl or carboxyl groups wherein the oxygen is about 4 to 10 atomic percent above the original surface content of the base. The polyester film base can be either polyethylene terephthalate or polyethylene naphthalate.Type: GrantFiled: February 14, 1996Date of Patent: April 8, 1997Assignee: Eastman Kodak CompanyInventors: Jeremy M. Grace, Janglin Chen, Louis J. Gerenser, David A. Glocker
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Patent number: 5582921Abstract: The present invention is a polyester film base which has a surface approximately 5 nm thick. The surface of the film base has been altered to include about 6 to 15 atomic percent nitrogen in the form of imines, secondary amines and primary amines in the ratio of about 1:1:2. The invention also includes a film base whose surface includes oxygen in the form of hydroxyl, ether, epoxy, carbonyl or carboxyl groups wherein the oxygen is about 4 to 10 atomic percent above the original surface content of the base. The polyester film base can be either polyethylene terephthalate or polyethylene naphthalate.Type: GrantFiled: May 15, 1995Date of Patent: December 10, 1996Assignee: Eastman Kodak CompanyInventors: Jeremy M. Grace, Janglin Chen, Louis J. Gerenser, David A. Glocker