Patents by Inventor Rustom Sam Kanga

Rustom Sam Kanga 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 comprising a multi-layer slip film
    Patent number: 6367381
    Abstract: The present invention provides a method of making a laser imaged printing plate. First, a solid, uncured printing plate is modified with both a UV absorber and an IR absorber. This is most conveniently done by constructing a multilayer slip film comprising at least two layers wherein at least one layer comprises a strong UV absorber, and wherein at least one other layer comprises an IR absorber having high absorptivity. The multilayer slip film is already adapted for use with a printing plate and is applied in the usual fashion to the surface of the uncured printing plate. The printing plate with the multilayer slip film can be stored for a time, or used immediately, as the printer's needs dictate. In use, the multilayer slip film is ablated from the photopolymer using an IR 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: February 22, 2000
    Date of Patent: April 9, 2002
    Assignee: Polyfibron Technologies, Inc.
    Inventor: Rustom Sam Kanga
  • 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