Patents by Inventor Alfred F. Daech

Alfred F. Daech 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).

  • Chromium-free conversion coating
    Patent number: 6451443
    Abstract: A corrosion-resistant coating for aluminum alloys preferably includes lithium molybdate and cerium. A conversion coating has been developed for aluminum surfaces that can substitute for the conventional chromate containing conversion coating. This new coating contains compounds such as lithium molybdate and cerium. The initial process consisted of two steps. Coated surface was tested to ASTM B117 requirement for 168 hours, showing little corrosion. Paint adhesion tests were also conducted with good results. Subsequent tests indicated that one step is adequate, but additional tests are needed.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: September 17, 2002
    Assignee: University of New Orleans Research and Technology Foundation, Inc.
    Inventor: Alfred F. Daech
  • Aluminum alloy
    Patent number: 6352671
    Abstract: A corrosion-resistant aluminum alloy includes 91%-95.7% by weight aluminum, 0.5%-1% by weight scandium, 3%-5% by weight magnesium, 0.5%-2% by weight nickel, and 0.3%-1% by weight chromium.
    Type: Grant
    Filed: November 20, 1999
    Date of Patent: March 5, 2002
    Assignees: University of New Orleans Foundation, The Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
    Inventors: Alfred F. Daech, Nikhil K. Sarkar
  • Adhesive for aluminum using aluminum-lithium corrosion inhibitors
    Patent number: 6069197
    Abstract: An adhesive composition comprising aluminum lithium alloy particles and a multi functional polymer resin is disclosed. Methods for preventing corrosion, for bonding two substrates comprising aluminum together, and for heat-free welding two substrates preferably comprising aluminum or aluminum alloy using the adhesive compositions of the invention are also disclosed.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: May 30, 2000
    Assignees: University of New Orleans Foundation, The Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
    Inventors: Alfred F. Daech, Nikhil K. Sarkar