Patents by Inventor Joy M. Schaefer

Joy M. Schaefer 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).

  • Ultraviolet blocking polysiloxane resin and process for making the same
    Patent number: 5371138
    Abstract: A poysiloxane resin composition includes a blend of silanols, colloidal silica, an ultraviolet-absorbing material, and a dye for correcting the color of a film formed from the resin composition. The silanols include a silanol from the group having the formula R.sub.w Si(OH).sub.x or R.sub.y Si(OR').sub.z where (w+x) or (y+z)=4, and R and R' are organic radicals without any crosslinking sites, silanol from the group having the formula R"Si(OR'").sub.3 where R" is a hydrogen atom or an organic radical and R"' is an organic radical containing a crosslinking site. The resin may be cured at 420.degree. F. The ultraviolet-absorbing material may be a benzophenone, a benzotriazole, or a benzothiazole. A process for forming the resin composition includes reacting the silanols and the ultraviolet-absorbing material under continuous agitation for about six hours.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: December 6, 1994
    Assignee: Tru Vue, Inc.
    Inventors: Joy M. Schaefer, David Ganbarg
  • Surface treatment for aluminum and aluminum alloys
    Patent number: 4422886
    Abstract: A low pH solution and a method for conversion coating aluminum and aluminum alloy surfaces, as well as the coated surfaces themselves, utilizing zirconium, fluoride and nickel and, optionally, fluorophosphate.
    Type: Grant
    Filed: March 16, 1983
    Date of Patent: December 27, 1983
    Assignee: Chemical Systems, Inc.
    Inventors: Narayan Das, Joy M. Schaefer
  • Surface treatment for aluminum and aluminum alloys
    Patent number: 4391652
    Abstract: A low pH solution and a method for conversion coating aluminum and aluminum alloy surfaces, as well as the coated surfaces themselves, utilizing zirconium, fluoride and nickel and, optionally, fluorophosphate.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: July 5, 1983
    Assignee: Chemical Systems, Inc.
    Inventors: Narayan Das, Joy M. Schaefer