Patents by Inventor Howard M. Siegel

Howard M. Siegel 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).

  • Coatings for ferrous substrates
    Patent number: 3956030
    Abstract: Coatings for silicon steel comprised of MgO, an amorphous magnesia-silica complex and a boron bearing compound.
    Type: Grant
    Filed: June 27, 1975
    Date of Patent: May 11, 1976
    Assignee: Merck & Co., Inc.
    Inventors: Leonard S. Lee, Howard M. Siegel, Samuel W. Sopp
  • Coated ferrous substrates comprising an amorphous magnesia-silica complex
    Patent number: 3945862
    Abstract: Coatings for silicon steel comprised of MgO, an amorphous magnesia-silica complex and a boron bearing compound.
    Type: Grant
    Filed: November 15, 1974
    Date of Patent: March 23, 1976
    Assignee: Merck & Co., Inc.
    Inventors: Leonard S. Lee, Howard M. Siegel, Samuel W. Sopp
  • Coatings for ferrous substrates
    Patent number: 3941621
    Abstract: Coatings for silicon steel comprised of MgO, an amorphous magnesia-silica complex and a lithium bearing compound.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: March 2, 1976
    Assignee: Merck & Co., Inc.
    Inventors: Leonard S. Lee, Samuel W. Sopp, Howard M. Siegel
  • Magnesia coatings for ferrous substrates comprising amorphous magnesia-silica complexes
    Patent number: 3932202
    Abstract: Coatings for silicon steel comprised of MgO, an amorphous magnesia-silica complex and a lithium bearing compound.
    Type: Grant
    Filed: November 5, 1974
    Date of Patent: January 13, 1976
    Assignee: Merck & Co., Inc.
    Inventors: Leonard S. Lee, Samuel W. Sopp, Howard M. Siegel