Patents by Inventor Hailing Duan

Hailing Duan 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).

  • Patent number: 9452963
    Abstract: Disclosed is a method for producing 1,3-butadiene and/or 3-buten-2-ol from 2,3-butanediol with high selectivity without using a radioactive substance. The method for producing 1,3-butadiene and/or 3-buten-2-ol comprises the step of dehydrating 2,3-butanediol in the presence of scandium oxide. The method enables the production of 1,3-butadiene and/or 3-buten-2-ol from 2,3-butanediol with high selectivity without using a radioactive substance.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: September 27, 2016
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Satoshi Sakami, Katsushige Yamada, Satoshi Sato, Hailing Duan
  • Publication number: 20160221904
    Abstract: Disclosed is a method for producing 1,3-butadiene and/or 3-buten-2-ol from 2,3-butanediol with high selectivity without using a radioactive substance. The method for producing 1,3-butadiene and/or 3-buten-2-ol comprises the step of dehydrating 2,3-butanediol in the presence of scandium oxide. The method enables the production of 1,3-butadiene and/or 3-buten-2-ol from 2,3-butanediol with high selectivity without using a radioactive substance.
    Type: Application
    Filed: September 8, 2014
    Publication date: August 4, 2016
    Applicants: TORAY INDUSTRIES, INC., NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY
    Inventors: Satoshi Sakami, Katsushige Yamada, Satoshi Sato, Hailing Duan
  • Publication number: 20080194719
    Abstract: A coating composition for coating on a substrate to form a sensitive media suitable for color formation by exposure to a laser in the wavelength range of from about 10.3 to about 10.6 microns is provided, the coating composition comprising: (a) at least one organic compound which absorbs electromagnetic radiation in the wavelength range of from about 10.3 to about 10.6 microns and which generates sufficient energy to trigger a color formation reaction, and (b) at least one color forming agent which can form a human-visible mark upon a triggering reaction by the absorbed energy in the coated media.
    Type: Application
    Filed: September 5, 2007
    Publication date: August 14, 2008
    Applicant: FUJIFILM HUNT CHEMICALS U.S.A., INC.
    Inventors: Hailing Duan, Janet Carlock
  • Publication number: 20070098900
    Abstract: A laser markable media that can provide superior mark quality with high contrast, high resolution, and a high degree of quality consistency, and that does not rely on physical damages to the material integrity on the exposed area. The laser markable media further provides a balanced performance between good media storage stability, heat resistance and optimum sensitivity to laser exposure. Also disclosed is a laser markable media that has a high degree of transparency to satisfy a wider range of application requirements than found in the prior art and a method of using the media.
    Type: Application
    Filed: March 31, 2006
    Publication date: May 3, 2007
    Inventors: Akira Abe, Janet Carlock, Yue Chen, Hailing Duan, Toshio Hara, Haixing Wan, Tsutomu Watanabe
  • Patent number: 6770429
    Abstract: A single-part, single-phase liquid color developer concentrate for color photographic development having at least one color developing agent of p-phenylenediamine or a derivative or salt thereof, an aqueous solution containing one or more organic solvents in a weight ratio of water to the organic solvent greater than or equal to about 60:40, a molar ratio of [Na+]/[K+] of at least about 1:2, preferably at least about 2:1, and/or a molar ratio of the organic solvent of Formula (I) to a free base of the p-phenylendiamine or p-phenylendiamine derivative is from about 3:1 to about 30:1 is described. The color developer concentrate is simple to manufacture, stable, compact, easy to use, has good water solubility upon dilution, minimizes mixing errors, and can be used with a very low replenishment rate. A method for processing image-wise exposed photographic color silver halide emulsions using the single-part, single-phase liquid color developer concentrate is also provided.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: August 3, 2004
    Assignee: Fuji Hunt Photographic Chemicals, Inc.
    Inventor: Hailing Duan
  • Publication number: 20020061475
    Abstract: A single-part, single-phase liquid color developer concentrate for color photographic development having at least one color developing agent of p-phenylenediamine or a derivative or salt thereof, an aqueous solution containing one or more organic solvents in a weight ratio of water to the organic solvent greater than or equal to about 60:40, a molar ratio of [Na+]/[K+] of at least about 1:2, preferably at least about 2:1, and/or a molar ratio of the organic solvent of Formula (I) to a free base of the p-phenylendiamine or p-phenylendiamine derivative is from about 3:1 to about 30:1 is described. The color developer concentrate is simple to manufacture, stable, compact, easy to use, has good water solubility upon dilution, minimizes mixing errors, and can be used with a very low replenishment rate. A method for processing image-wise exposed photographic color silver halide emulsions using the single-part, single-phase liquid color developer concentrate is also provided.
    Type: Application
    Filed: September 21, 2001
    Publication date: May 23, 2002
    Inventor: Hailing Duan
  • Patent number: 6197484
    Abstract: A homogeneous, single part slurry-form color photographic developer composition for use in color photographic processing is provided which comprises a defined compound of Formula (1) and, a p-phenylenediamine derivative, and contains a discontinuous solid phase distributed in a single liquid phase. The slurry is used by being completely dissolved in water, and diluted to make a working tank developer or developer replenisher solution, typically with a pH of about 10.4 or less for the working tank and 12.0 or less for the replenisher. The slurry is compact, homogeneous, easy to dispense, has excellent water solubility, and remains free of degradation during long-term storage. A process for developing photographic color silver halide photosensitive material with the slurry is also provided, as well as a process for making the slurry.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: March 6, 2001
    Assignee: Fuji Hunt Photographic Chemicals, Inc.
    Inventors: Hongzoon Kim, Hailing Duan, Mani Philipose
  • Patent number: 6126840
    Abstract: Process and apparatus for treating an aqueous effluent with high concentrations of silver and ferric/ferrous complexes using multiple additions of one or more water-soluble sulfur containing polymer chelating agents, with optional additions of non-polymeric sulfur containing compounds. The presence of a high concentration of both dissolved silver and ferric/ferrous complexes prevents efficient silver removal by precipitation and the achievement of a very low residual silver concentration. By using multiple additions of the chelating agent(s), a higher degree of silver removal can be achieved than would be possible with the same amount of chelating agents added in a single stage. Effluent from photo finishing operations, particularly minilabs, can be effectively treated so that there is essentially no silver remaining in the treated effluent.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: October 3, 2000
    Assignee: Fuji Hunt Photographic Chemicals, Inc.
    Inventors: Hailing Duan, William Lovell
  • Patent number: 5993668
    Abstract: Metal ions and/or complexes of metal ions are removed from a solution by formation of an insoluble chelated complex of the metal ions and a polymeric precipitating agent. A two-step process of mixing the influent with the precipitating agent is used to induce rapid precipitation and obtain large, self-agglomerated precipitate without addition of flocculating agent and/or pH adjustment. In addition, parallel loops are employed to simultaneously discharge treated metal-free solution and effectively collect/remove the precipitate-containing sludge without interfering with each other. The metal capturing capacity of the polymeric precipitant is maximized by forcing the influent solution through layers of the collected precipitate and by recycling unsaturated metal-precipitant complexes in the processing loop.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: November 30, 1999
    Assignee: Fuji Hunt Photographic Chemicals, Inc.
    Inventor: Hailing Duan
  • Patent number: 5914221
    Abstract: A homogeneous, single part slurry-form color photographic developer composition for use in color photographic processing is provided which comprises a defined compound of Formula (I) and, a p-phenylenediamine derivative, and contains a discontinuous solid phase distributed in a single liquid phase. The slurry is used by being completely dissolved in water, and diluted to make a working tank developer or developer replenisher solution, typically with a pH of about 10.4 or less for the working tank and 12.0 or less for the replenisher. The slurry is compact, homogeneous, easy to dispense, has excellent water solubility, and remains free of degradation during long-term storage. A process for developing photographic color silver halide photosensitive material with the slurry is also provided, as well as a process for making the slurry.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: June 22, 1999
    Assignee: Fuji Hunt Photographic Chemicals, Inc.
    Inventors: Hongzoon Kim, Hailing Duan, Mani Philipose
  • Patent number: 5728295
    Abstract: Metal ions and/or complexes of metal ions are removed from a solution by formation of an insoluble chelated complex of the metal ions and a polymeric precipitating agent. A two-step process of mixing the influent with the precipitating agent is used to induce rapid precipitation and obtain large, self-agglomerated precipitate without addition of flocculating agent and/or pH adjustment. In addition, parallel loops are employed to simultaneously discharge treated metal-free solution and effectively collect/remove the precipitate-containing sludge without interfering with each other. The metal capturing capacity of the polymeric precipitant is maximized by forcing the influent solution through layers of the collected precipitate and by recycling unsaturated metal-precipitant complexes in the processing loop.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: March 17, 1998
    Assignee: Fuji Hunt Photographic Chemicals, Inc.
    Inventor: Hailing Duan