Patents by Inventor William V. Block

William V. Block 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: 4594176
    Abstract: Alkaline compositions useful to form aqueous paint stripping solutions are disclosed which comprise mixtures of an alkali metal hydroxide, a polyoxyalkylene polyamine accelerator and, optionally, a glycol or glycol ether accelerator.
    Type: Grant
    Filed: June 13, 1985
    Date of Patent: June 10, 1986
    Assignee: Economics Laboratory, Inc.
    Inventors: Dennis F. Mahoney, William V. Block
  • Patent number: 4537705
    Abstract: Alkaline compositions useful to form aqueous paint stripping solutions are disclosed which comprise mixtures of an alkali metal hydroxide, a polyoxyalkylene polyamine accelerator and, optionally, a glycol or glycol ether accelerator.
    Type: Grant
    Filed: April 25, 1984
    Date of Patent: August 27, 1985
    Assignee: Economics Laboratory, Inc.
    Inventors: Dennis F. Mahoney, William V. Block
  • Patent number: 4220456
    Abstract: A method and formulation for separating airborne overspray mists of paint and lacquer from ambients which includes the steps of exposing the mist to an aqueous solution of a deactivating formulation, permitting the contact to continue until the paint has become deactivated, and thereafter separating the deactivated paint from the aqueous solution. The formulation which comprises the aqueous solution includes an alkaline agent consisting of calcium hydroxide, sodium metasilicate, and mixtures thereof, bentonite clay, an aliphatic petroleum distillate having a lower boiling point of greater than about 150.degree. C., and a fatty acid nitrogen derivative selected from the group consisting of primary, tertiary, 1,3-propylenediamines, and quaternary ammonium chlorides, each with a fatty carbon chain length of from 10 to 18 carbon atoms.
    Type: Grant
    Filed: June 21, 1979
    Date of Patent: September 2, 1980
    Assignee: Fremont Industries, Inc.
    Inventor: William V. Block
  • Patent number: 3979219
    Abstract: An acidic wood finish remover formulation which consists essentially of a mixture of hydroxyacetic acid in methylene chloride solution. A vapor pressure depressant is present, such as paraffin and a solubilizer for the wax, such as toluene is present. An anionic detergent consisting essentially of linear alkyl benzene sulfonic acid is utilized as well as a corrosion inhibiter for permitting retention of the material in metal storage vessels.
    Type: Grant
    Filed: March 6, 1975
    Date of Patent: September 7, 1976
    Assignee: Fremont Industries, Inc.
    Inventors: Edward H. Chang, William V. Block, Mark L. Gruss