Patents by Inventor Roberta Rosty

Roberta Rosty 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).

  • Adhesive bonding
    Patent number: 4835016
    Abstract: A method of pretreating a polyolefin for adhesive bonding. The method inves contacting the polyolefin with a non-chromate solution such as either lead dioxide, potassium iodate or ammonia persulfate in a combination of water and sulfuric acid.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: May 30, 1989
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Roberta Rosty, David W. Levi
  • Preparation of steel surfaces for adhesive bonding by etching with H.sub.3 PO.sub.4 -polyhydric alcohol mixture
    Patent number: 4410393
    Abstract: The invention provides a process and composition for preparing steel surfaces for adhesive bonding. The process involves contacting the steel article with an etchant composition containing phosphoric acid and a liquid polyhydric alcohol such as propylene glycol, diethylene glycol or glycerine. The process produces steel surfaces, which when adhesively bonded yield joints much stronger than those obtained by abrasive blasting, and comparable to those obtained by use of phosphoric acid-ethanol etchant compositions without the hazards of the latter.
    Type: Grant
    Filed: June 24, 1982
    Date of Patent: October 18, 1983
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: William J. Russell, Roberta Rosty