Patents by Inventor David C. Peters

David C. Peters 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).

  • Method of manufacturing aluminum alloy sheet
    Publication number: 20040007295
    Abstract: A method for manufacturing aluminum sheet stock that includes hot rolling an aluminum alloy feedstock to a final thickness and then back-annealing (or stress relieving or stabilizing) the hot rolled feedstock to provide an intermediate temper.
    Type: Application
    Filed: February 7, 2003
    Publication date: January 15, 2004
    Inventors: Leland R. Lorentzen, David C. Peters
  • Process for the manufacture of soap
    Patent number: 4427572
    Abstract: A calcium soap is prepared by saponifying an organic carboxylic acid having from 6 to 24 carbon atoms in the molecule, its ester or mixtures thereof with calcium hydroxide in a liquid reaction medium comprising a dipolar aprotic solvent, separating the calcium soap from the reaction medium and removing excess of the solvent from the calcium soap. The calcium soap so produced is in the form of a dry finely divided powder which can, for example, be employed in the manufacture of industrial lubricants.
    Type: Grant
    Filed: July 21, 1981
    Date of Patent: January 24, 1984
    Assignee: Lever Brothers Company
    Inventors: John B. Akers, Jane A. Littler, David C. Peters
  • Process for the manufacture of soap
    Patent number: 4337209
    Abstract: An alkali metal salt of an organic carboxylic acid, i.e. a soap, is prepared by saponifying the corresponding organic carboxylic acid, its ester or mixtures thereof with a concentrated aqueous solution of alkali metal hydroxide in the presence of an inorganic salt, in a liquid reaction medium comprising acetone, separating the organic salt from the reaction medium and removing excess acetone from the organic salt. The inorganic salt, i.e. soap, so produced is in the form of a dry finely divided powder.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: June 29, 1982
    Assignee: Internationale Octrooi Maatschappij "Octropa" B.V.
    Inventors: John B. Akers, Jane A. Littler, David C. Peters
  • Treatment of effluent
    Patent number: 4259251
    Abstract: A process for the production of fatty acid soaps from sludge, especially sewage sludge, comprises extracting sludge having a solids content of at least 15% by weight with a non-polar solvent to provide an extract containing fatty matter, and subsequently saponifying the fatty matter in the presence of a dipolar aprotic solvent having a dielectric constant of at least 15 to produce fatty acid soaps.
    Type: Grant
    Filed: February 7, 1980
    Date of Patent: March 31, 1981
    Assignee: Internationale Octrooi Maatschappij "Octropa" B.V.
    Inventors: John B. Akers, David C. Peters
  • Duct design calculator
    Patent number: D289414
    Type: Grant
    Filed: June 19, 1985
    Date of Patent: April 21, 1987
    Assignee: Carrier Corporation
    Inventors: David C. Peters, Derek P. Williams, William C. Chadwick