Patents by Inventor Judithann Ruth Hartman

Judithann Ruth Hartman 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).

  • Corrosion inhibiting composition for treating asbestos containing materials
    Patent number: 5741358
    Abstract: A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of an acid component, optionally a source of fluoride ions, and a corrosion inhibiting amount of thiourea, a lower alkylthiourea, a C.sub.8 -C.sub.15 alkylpyridinium halide or mixtures thereof. A method of transforming an asbestos-containing building material, while part of a building structure, into a non-asbestos material by using the present composition also is disclosed.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: April 21, 1998
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Judithann Ruth Hartman