Patents by Inventor Arthur C. Stidham

Arthur C. Stidham 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).

  • Rare earth-containing frits having a high glass transition temperature and their use for the production of enamels having improved heat resistance
    Patent number: 5264287
    Abstract: The present invention is directed to an alkali borosilicate frit which is capable of being applied to a metal substrate by the dry powder electrostatic process at a transfer efficiency of at least 70%, has a glass transition temperature of >525.degree. C. and contains, based on the total weight of the frit:______________________________________ Oxide Wt % ______________________________________ K.sub.2 O 6 to 10 Na.sub.2 O 5.5 to 9 LiO.sub.2 0 to 4 ZrO.sub.2 0 to 4 TiO.sub.2 0 to 4 ZnO 0 to 15 B.sub.2 O.sub.3 8 to 15 SiO.sub.2 40 to 60 La.sub.2 O.sub.3 3 to 9 CaO 0 to 15 F 0 to 2 Fe.sub.2 O.sub.3 0 to 3 CoO 0 to 5 NiO 0 to 5, ______________________________________wherein the total weight of CoO plus NiO is at least 1.The present invention is also directed to enamels for self-cleaning ovens containing these frits.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: November 23, 1993
    Assignee: Miles Inc.
    Inventors: Vernon J. Grebe, Elie E. Saad, Derek W. Sproson, Arthur C. Stidham
  • Rare earth-containing frits having a high glass transition temperature and their use for the production of enamels having improved heat resistance
    Patent number: 5198393
    Abstract: The present invention is directed to an alkali borosilicate frit which is capable of being applied to a metal substrate by the dry powder electrostatic process at a transfer efficiency of at least 70%, has a glass transition temperature of >525.degree. C. and contains, based on the total weight of the frit:______________________________________ Oxide Wt % ______________________________________ K.sub.2 O 6 to 10 Na.sub.2 O 5.5 to 9 LiO.sub.2 0 to 4 ZrO.sub.2 0 to 4 TiO.sub.2 0 to 4 ZnO 0 to 15 B.sub.2 O.sub.3 8 to 15 SiO.sub.2 40 to 60 La.sub.2 O.sub.3 3 to 9 CaO 0 to 15 F 0 to 2 Fe.sub.2 O.sub.3 0 to 3 CoO 0 to 5 NiO 0 to 5, ______________________________________wherein the total weight of CoO plus NiO is at least 1.The present invention is also directed to enamels for self-cleaning ovens containing these frits.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: March 30, 1993
    Assignee: Miles Inc.
    Inventors: Vernon J. Grebe, Elie E. Saad, Derek W. Sproson, Arthur C. Stidham