Patents by Inventor Chi W. Chiu

Chi W. Chiu 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).

  • Printing form precursor having elastomeric cap layer and a method of preparing a printing form from the precursor
    Patent number: 9713919
    Abstract: The invention pertains to a printing form precursor, a method of preparing a printing form from the precursor, and a process of preparing the precursor. The printing form precursor includes a photopolymerizable layer, an elastomeric layer having at least an elastomeric binder and particulate, and an actinic radiation opaque material on, adjacent, or disposed above the elastomeric layer opposite the photopolymerizable layer. The particulate is selected from specific material particles having an average diameter from 1 to 10 micron and a refractive index that is within 0.04 units of an index of refraction of the composition forming the elastomeric layer.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: July 25, 2017
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Robert M Blomquist, John Stephen Locke, Chi W Chiu
  • PRINTING FORM PRECURSOR HAVING ELASTOMERIC CAP LAYER AND A METHOD OF PREPARING A PRINTING FORM FROM THE PRECURSOR
    Publication number: 20150328878
    Abstract: The invention pertains to a printing form precursor, a method of preparing a printing form from the precursor, and a process of preparing the precursor. The printing form precursor includes a photopolymerizable layer, an elastomeric layer having at least an elastomeric binder and particulate, and an actinic radiation opaque material on, adjacent, or disposed above the elastomeric layer opposite the photopolymerizable layer. The particulate is selected from specific material particles having an average diameter from 1 to 10 micron and a refractive index that is within 0.04 units of an index of refraction of the composition forming the elastomeric layer.
    Type: Application
    Filed: July 29, 2015
    Publication date: November 19, 2015
    Inventors: ROBERT M. BLOMQUIST, JOHN STEPHEN LOCKE, CHI W. CHIU
  • Printing form precursor having elastomeric cap layer and a method of preparing a printing form from the precursor
    Patent number: 9134612
    Abstract: The invention pertains to a printing form precursor, a method of preparing a printing form from the precursor, and a process of preparing the precursor. The printing form precursor includes a photopolymerizable layer, an elastomeric layer having at least an elastomeric binder and particulate, and an actinic radiation opaque material on, adjacent, or disposed above the elastomeric layer opposite the photopolymerizable layer. The particulate is selected from specific material particles having an average diameter from 1 to 10 micron and a refractive index that is within 0.04 units of an index of refraction of the composition forming the elastomeric layer.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: September 15, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Robert M Blomquist, John Stephen Locke, Chi W Chiu
  • PRINTING FORM PRECURSOR HAVING ELASTOMERIC CAP LAYER AND A METHOD OF PREPARING A PRINTING FORM FROM THE PRECURSOR
    Publication number: 20130255513
    Abstract: The invention pertains to a printing form precursor, a method of preparing a printing form from the precursor, and a process of preparing the precursor. The printing form precursor includes a photopolymerizable layer, an elastomeric layer having at least an elastomeric binder and particulate, and an actinic radiation opaque material on, adjacent, or disposed above the elastomeric layer opposite the photopolymerizable layer. The particulate is selected from specific material particles having an average diameter from 1 to 10 micron and a refractive index that is within 0.04 units of an index of refraction of the composition forming the elastomeric layer.
    Type: Application
    Filed: March 7, 2013
    Publication date: October 3, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: ROBERT M. BLOMQUIST, John Stephen Locke, Chi W. Chiu