Patents by Inventor Yan Man Chi Sunny

Yan Man Chi Sunny 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).

  • Photographic chemical formula and process
    Patent number: 6521396
    Abstract: High density and contrast range photographic grids for a moiré body scanner are made by a method including forming an image on a high density technical grade film, providing a recommended commercial developer chemical for said high density technical grade film, preparing a modified developer liquid from said recommended commercial developer chemical by increasing the pH and the contrast of developer reducing agent, and developing a black and white image using said modified developer liquid. The modified developer liquid also finds other applications.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: February 18, 2003
    Assignee: Hong Kong Polytechnic University
    Inventors: Yan Man Chi Sunny, Wing Man Yu
  • Photographic chemical formula and process
    Publication number: 20020192606
    Abstract: High density and contrast range photographic grids for a moiré body scanner are made by a method including forming an image on a high density technical grade film, providing a recommended commercial developer chemical for said high density technical grade film, preparing a modified developer liquid from said recommended commercial developer chemical by increasing the pH and the contrast of developer reducing agent, and developing a black and white image using said modified developer liquid. The modified develop finds other applications.
    Type: Application
    Filed: March 20, 2001
    Publication date: December 19, 2002
    Inventors: Yan Man Chi Sunny, Wing Man Yu