Patents by Inventor Michael Wen-Chein Yang

Michael Wen-Chein Yang 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).

  • Laser imaged printing plates
    Patent number: 6916596
    Abstract: Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: July 12, 2005
    Inventors: Michael Wen-Chein Yang, Rustom Sam Kanga, Alvin Varnard Randall
  • Laser imaged printing plates
    Patent number: 6756181
    Abstract: Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: June 29, 2004
    Assignee: Polyfibron Technologies, Inc.
    Inventors: Michael Wen-Chein Yang, Rustom Sam Kanga
  • Laser imaged printing plates
    Patent number: 6605410
    Abstract: Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: August 12, 2003
    Assignee: Polyfibron Technologies, Inc.
    Inventors: Michael Wen-Chein Yang, Rustom Sam Kanga, Alvin Varnard Randall
  • Laser imaged printing plates
    Publication number: 20030022107
    Abstract: Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.
    Type: Application
    Filed: May 23, 2002
    Publication date: January 30, 2003
    Inventors: Michael Wen-Chein Yang, Rustom Sam Kanga, Alvin Varnard Randall
  • Laser imaged printing plates
    Publication number: 20020018963
    Abstract: Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.
    Type: Application
    Filed: August 3, 2001
    Publication date: February 14, 2002
    Applicant: Polyfibron Technologies, Inc.
    Inventors: Michael Wen-Chein Yang, Rustom Sam Kanga
  • Laser imaged printing plates
    Publication number: 20020009673
    Abstract: Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.
    Type: Application
    Filed: July 3, 2001
    Publication date: January 24, 2002
    Applicant: Polyfibron Technologies, Inc.
    Inventors: Michael Wen-Chein Yang, Rustom Sam Kanga, Alvin Varnard Randall
  • Laser imaged printing plates
    Publication number: 20010053499
    Abstract: Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.
    Type: Application
    Filed: July 3, 2001
    Publication date: December 20, 2001
    Applicant: Polyfibron Technologies, Inc.
    Inventors: Michael Wen-Chein Yang, Rustom Sam Kanga, Alvin Varnard Randall
  • Method of making laser imaged printing plates utilizing ultraviolet absorbing layer
    Patent number: 5925500
    Abstract: Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: July 20, 1999
    Assignee: Polyfibron Technologies, Inc.
    Inventors: Michael Wen-Chein Yang, Rustom Sam Kanga, Alvin Varnard Randall