Patents by Inventor Kuo C. Chen

Kuo C. 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: 5120396
    Abstract: A process for forming a figure on a product of stainless-steel, firstly, drafting a figure on a sheet of paper and generates a first film of the figure, such that the area where the figure locates is white and the remaining area is black. Then, generating a second film of the figure based on the first film, such that the area where the figure locates is constituted by a plurality of black dots and the area other than the black dots is white. After that, engaging the second film with a silk-screen coated with sensitizers and exposing the second film, such that the figure on the second film is copied to the silk-screen, and rinsing the silk-screen. Thereafter, putting the silk-screen on a stainless-steel plate and brushes a protecting film of anti-erosive material on an overall area of the silk-screen. Subsequently, removing the silk-screen and immersing the stainless-steel plate in etchants for a period of time. Finally, processing the etched stainless-steel plate to form a desired product.
    Type: Grant
    Filed: June 4, 1991
    Date of Patent: June 9, 1992
    Inventor: Kuo C. Chen