Patents by Inventor Wilbert J. Roberts

Wilbert J. Roberts 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: 5453459
    Abstract: The invention is a composition for providing a temporary coating to protect the surface of an article and a solvent free composition for rapidly removing the coating from the article. The invention also includes a method for protecting a surface of an article and a system for carrying out the process.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: September 26, 1995
    Assignee: Henkel Corporation
    Inventor: Wilbert J. Roberts
  • Patent number: 5330788
    Abstract: The invention is a composition for providing a temporary coating to protect the surface of an article and a solvent free composition for rapidly removing the coating from the article. The invention also includes a method for protecting a surface of an article and a system for carrying out the process.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: July 19, 1994
    Assignee: Henkel Corporation
    Inventor: Wilbert J. Roberts
  • Patent number: 4130674
    Abstract: A process is described wherein oversprayed organic coatings are controlled in an aqueous spray booth system by adding to the water spray supply an effective amount of a mixture of (1) a long chain surface active nitrogen derivative and (2) at least one member selected from the class of polyvalent water soluble or dispersible metal salts, nonionic high molecular weight polymers, anionic high molecular weight polymers, or a blend of nonionic and anionic high molecular weight polymers. The mixture is added to the water in the proportions of from about 0.05% by weight to 2% by weight of the solution. The method, which works with solvent-borne coatings and water-borne coatings results in rendering the organic coatings non-sticky, non-tacky and separable as a readily handled sludge.
    Type: Grant
    Filed: August 17, 1977
    Date of Patent: December 19, 1978
    Assignee: Detrex Chemical Industries, Inc.
    Inventors: Wilbert J. Roberts, Gerald R. Weissman