Patents by Inventor Howard C. Rafla-Yuan

Howard C. Rafla-Yuan 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: 5961852
    Abstract: A method for effectuating scribe and break of coated glass microsheets for use with satellite solar cell covers. The method improves the consistency and edge quality of scribed solar cell covers, and also adds scribe and break capabilities not available with the conventional processes, resulting in various, even complex shapes and improved yields. The laser scribe method ensures that most of the laser energy is absorbed in a thin layer that is removed during the pulse, which further ensures that virtually no heat is left behind. This method also promotes a superior and consistent edge quality in satellite solar cell covers. The smoother edges eliminate points of weakness from where cracks may originate, as frequently experienced with the conventional diamond scribe techniques. A laser source such as a KrF excimer laser is utilized for scribing the microsheets.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: October 5, 1999
    Assignee: Optical Coating Laboratory, Inc.
    Inventors: Howard C. Rafla-Yuan, Rick Bradley
  • Patent number: 5094693
    Abstract: There is disclosed a doped zinc oxide pigment composition and method of preparing said composition, wherein the dopant is uniformly dispersed in the zinc oxide matrix in the form of a solid solution such that the mechanism by which undoped zinc oxide absorbs blue or near ultraviolet light is suppressed, thereby yielding a whiter composition. Preferred dopants are Al and Li.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: March 10, 1992
    Assignee: International Lead Zinc Research Organization, Inc.
    Inventors: James F. Cordaro, Howard C. Rafla-Yuan