Patents by Inventor Wei S. Yen

Wei S. Yen 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).

  • Narrow band radiation filter films
    Patent number: 5338492
    Abstract: The present invention discloses radiation filters comprising a highly ordered crystalline array of microparticles fixed in a polymerized hydrogel.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: August 16, 1994
    Assignee: CYTEC Technology Corp.
    Inventors: Hans P. Panzer, Lino Giovanni, Martin L. Cohen, Wei S. Yen
  • Method of removing iron from concentrated alum solutions
    Patent number: 5093091
    Abstract: Iron is removed from concentrated alum solutions by contacting said solutions with a polymer containing hydroxamic acid or salt groups.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: March 3, 1992
    Assignee: American Cyanamid Company
    Inventors: David L. Dauplaise, Wei S. Yen
  • Polymers containing hydroxamic acid groups for reduction of suspended solids in bayer process streams
    Patent number: 4767540
    Abstract: The suspended solids content of Bayer process streams is reduced by contacting said stream with a polymer which contains hydroxamic acid groups.
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: August 30, 1988
    Assignee: American Cyanamid Company
    Inventors: Donald P. Spitzer, Wei S. Yen