Patents by Inventor Howard W. Holmquist

Howard W. Holmquist 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 cleaning aluminum surfaces
    Patent number: 4793903
    Abstract: An aluminum alloy article is anodized in an aqueous solution of phosphoric acid. Oxide forms on the surfaces of the article and dissolves as it forms to displace contaminants and deoxidize the surfaces. The anodizing etch rate is from about 0.0002 to about 0.0005 inch/surface/hour. Residual oxide on the surfaces is a maximum of about 3000 Angstroms. The article may be left in the solution following anodizing to dissolve a portion of the residual oxide. Preferred anodizing parameters include 15 to 25% by weight phosphoric acid, 75.degree. to 95.degree. F., and 4 to 10 volts. Usual anodizing times are from 5 to 10 minutes. Following deoxidation, the article is ready for subsequent processing, such as anodizing to provide a controlled thickness porous oxide coating followed by adhesive bonding.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: December 27, 1988
    Assignee: The Boeing Company
    Inventors: Howard W. Holmquist, Larry E. Tarr
  • Drilling fluid containing a fluid loss control agent of a sulfonated phenol-formaldehyde-phenol resin
    Patent number: 4381369
    Abstract: A water-base well drilling, workover or completion fluid containing a fluid loss control agent prepared by pre-reacting sulfonated phenol with formaldehyde under alkaline conditions and then reacting the mixture with phenol under controlled conditions is described.
    Type: Grant
    Filed: October 9, 1981
    Date of Patent: April 26, 1983
    Assignee: Georgia-Pacific Corporation
    Inventor: Howard W. Holmquist
  • Drilling fluid
    Patent number: 4322300
    Abstract: A water-base well drilling, workover or completion fluid containing a fluid loss control agent prepared by pre-reacting sulfonated phenol with formaldehyde under alkaline conditions and then reacting the mixture with phenol under controlled conditions is described.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: March 30, 1982
    Assignee: Georgia-Pacific Corporation
    Inventor: Howard W. Holmquist
  • Preparation of a lignocellulosic composite
    Patent number: 4186242
    Abstract: A process for the preparation of lignocellulosic composite using urea-formaldehyde adhesive is described characterized by treating the lignocellulosic constituents with ammonium-base lignosulfonate prior to pressing to decrease the emission of formaldehyde.
    Type: Grant
    Filed: March 8, 1976
    Date of Patent: January 29, 1980
    Assignee: Georgia-Pacific Corporation
    Inventor: Howard W. Holmquist