Patents by Inventor Wen-Li A. Chen

Wen-Li A. 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).

  • Patent number: 7090913
    Abstract: The invention relates to a validation device comprising at least one specular reflective layer, indicia on said reflective layer, a polymer protective layer overlaying said indicia, and a polymer protective layer on the side of the reflective layer opposite to said indicia wherein said indicia are formed by thermal dye transfer.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: August 15, 2006
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Cheryl J. Kaminsky, Wen-Li A. Chen, Yawcheng Lo
  • Patent number: 7058272
    Abstract: The invention relates to an indicator comprising a light-guiding layer, a cladding layer on one surface of said light-guiding layer, and a patterning layer on the other surface.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: June 6, 2006
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Cheryl J. Brickey, Wen-Li A. Chen
  • Publication number: 20050147372
    Abstract: The invention relates to an indicator comprising a light-guiding layer, a cladding layer on one surface of said light-guiding layer, and a patterning layer on the other surface.
    Type: Application
    Filed: December 29, 2003
    Publication date: July 7, 2005
    Inventors: Robert Bourdelais, Cheryl Brickey, Wen-Li Chen
  • Publication number: 20050139756
    Abstract: The invention relates to a timing device comprising an indicator device and a detector wherein said indicator device comprises a light-emissive element and a patterning layer.
    Type: Application
    Filed: December 29, 2003
    Publication date: June 30, 2005
    Inventors: Cheryl Brickey, Robert Bourdelais, Wen-Li Chen
  • Publication number: 20040229022
    Abstract: The invention relates to a validation device comprising at least one specular reflective layer, indicia on said reflective layer, a polymer protective layer overlaying said indicia, and a polymer protective layer on the side of the reflective layer opposite to said indicia wherein said indicia are formed by thermal dye transfer.
    Type: Application
    Filed: May 16, 2003
    Publication date: November 18, 2004
    Applicant: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Cheryl J. Kaminsky, Wen-Li A. Chen, Yawcheng Lo
  • Patent number: 6794099
    Abstract: The invention relates to a material to form an indicator element comprising a base material and at least one photosensitive silver halide layer, wherein the base material comprises at least one specular reflective layer between two polymer layers wherein the polymer layer between the at least one specular reflective layer and the silver halide layer is substantially transparent.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: September 21, 2004
    Assignee: Eastman Kodak Company
    Inventors: Wen-Li A. Chen, Robert P. Bourdelais, Cheryl J. Kaminsky, Richard A. Castle, Thomas M. Smith
  • Patent number: 6623679
    Abstract: A method for controlling the width of a polyester film support comprising, in order, the steps of: (a) extruding a polyester resin using one or more extruders; (b) casting the resin on a casting wheel to form a polyester sheet; (c) stretching the polyester sheet along the machine direction by ratios of 3 to 5 times at temperatures ranging from above the glass transition temperature to below the thermal crystallization temperature, wherein the machine contains extended edge rollers (14) in the drafter at the point where stretching occurs; (d) stretching the polyester sheet along the transverse direction by ratios of 3 to 5 times at temperatures ranging from above the glass transition temperature to below the thermal crystallization temperature; and (e) heat setting the polyester sheet at temperatures ranging from 180 to 250° C.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: September 23, 2003
    Assignee: Eastman Kodak Company
    Inventors: Wen-Li A. Chen, Timothy F. Cilano, Larry K. Maier, Jeffrey P. Johnson
  • Publication number: 20020132196
    Abstract: A method for controlling the width of a polyester film support comprising, in order, the steps of: (a) extruding a polyester resin using one or more extruders; (b) casting the resin on a casting wheel to form a polyester sheet; (c) stretching the polyester sheet along the machine direction by ratios of 3 to 5 times at temperatures ranging from above the glass transition temperature to below the thermal crystallization temperature, wherein the machine contains extended edge rollers (14) in a machine direction orientation device (drafter) at the point where stretching occurs; (d) stretching the polyester sheet along the transverse direction by ratios of 3 to 5 times at temperatures ranging from above the glass transition temperature to below the thermal crystallization temperature; and (e) heat setting the polyester sheet at temperatures ranging from 180 to 250 C. A polyester film support is also disclosed.
    Type: Application
    Filed: May 14, 2001
    Publication date: September 19, 2002
    Applicant: Eastman Kodak Company
    Inventors: Wen-Li A. Chen, Timothy F. Cilano, Larry K. Maier, Jeffrey P. Johnson
  • Publication number: 20020121727
    Abstract: A method for controlling the width of a polyester film support comprising, in order, the steps of: (a) extruding a polyester resin using one or more extruders; (b) casting the resin on a casting wheel to form a polyester sheet; (c) stretching the polyester sheet along the machine direction by ratios of 3 to 5 times at temperatures ranging from above the glass transition temperature to below the thermal crystallization temperature, wherein the machine contains extended edge rollers (14) in the drafter at the point where stretching occurs; (d) stretching the polyester sheet along the transverse direction by ratios of 3 to 5 times at temperatures ranging from above the glass transition temperature to below the thermal crystallization temperature; and (e) heat setting the polyester sheet at temperatures ranging from 180 to 250° C.
    Type: Application
    Filed: December 29, 2000
    Publication date: September 5, 2002
    Inventors: Wen-Li A. Chen, Timothy F. Cilano, Larry K. Maier, Jeffrey P. Johnson
  • Patent number: 6396066
    Abstract: A radiographic storage panel includes a storage phosphor layer disposed on a unique support that comprises two or more separate flexible substrates that are laminated or adhered together.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: May 28, 2002
    Assignee: Eastman Kodak Company
    Inventors: Wen-Li A. Chen, Arthur P. Chipouras, Terry A. Heath, William A. Mruk, David J. Steklenski
  • Patent number: 5925507
    Abstract: A highly useful photographic film base containing a miscible blend of is polyester containing at least 30 weight percent cyclohexylene dimethanol, CHDM/EG-PE, and a polycarbonate containing bisphenols, BP-PC, in specified proportions. Photographic elements prepared with this film base have a lesser tendency to take core-set and post process curl than do elements prepared with polyester containing cyclohexylene dimethanol, CHDM/EG-PE, film base.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: July 20, 1999
    Assignee: Eastman Kodak Company
    Inventors: Dennis J. Massa, James M. O'Reilly, Wen-Li A. Chen
  • Patent number: 5759756
    Abstract: The present invention is a photographic support including a core layer of a transparent non-crystalline polymer having a glass transition temperature Tg. The core layer has a first surface and a second surface. A first outer layer of a transparent crystalline polymer having a first stretch temperature Ts.sub.1 greater than the Tg is superposed on the first surface of said core layer. A second outer layer of a transparent crystalline polymer having a second stretch temperature Ts.sub.2 greater than the Tg is superposed on the second surface of said core layer.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: June 2, 1998
    Assignee: Eastman Kodak Company
    Inventors: Thomas M. Laney, Jehuda Greener, Wen-Li A. Chen
  • Patent number: 5599658
    Abstract: A highly useful photographic film base comprises a miscible blend of poly(ethylene naphthalate) and a poly(ether imide) in specified proportions. Photographic elements prepared with this film base have a lesser tendency to take core-set and post process curl than do elements prepared with poly(ethylene naphthalate) film base.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: February 4, 1997
    Assignee: Eastman Kodak Company
    Inventors: Jehuda Greener, Wen-Li A. Chen