Patents by Inventor Bjørn Andersen

Bjørn Andersen 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).

  • Hardener for use in-urea-formaldehyde and urea-melamine-formaldehyde based adhesives, an adhesive composition comprising said hardener and its use
    Patent number: 6590013
    Abstract: A hardener for use in urea-formaldehyde and urea-melamine-formaldehyde based adhesives comprises a polyvinyl acetate emulsion together with a metal chloride and an ammonium salt. The adhesive composition comprising a urea-formaldehyde or urea-melamine-formaldehyde resin, and the above hardener provides an increased curing rate, an acceptable viscosity, better adhesion and greater tolerance towards substrate type.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: July 8, 2003
    Assignee: A/S F. Heimann & Co.
    Inventors: Bjørn Andersen, Bo Gao Brehmer