Patents by Inventor Clifford A. Ferrin

Clifford A. Ferrin 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).

  • Hydrophilic polyurethaneurea foams containing no toxic leachable additives and method to produce such foams
    Patent number: 5296518
    Abstract: Hydrophilic polyurethane urea foams which are made without toxic, leachable additives are disclosed. High molecular weight, isocyanate-terminated, ethylene oxide-rich prepolymers are used in place of surfactants to make the foams.
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: March 22, 1994
    Assignee: Hampshire Chemical Corp.
    Inventors: Timothy G. Grasel, Clifford A. Ferrin, James L. Guthrie, Clifton L. Kehr
  • Polymer surface modification using aqueous stable diazo solution
    Patent number: 5075427
    Abstract: The present invention is directed to aqueous compositions of organic diazo compounds which are capable of being readily handled in commercial applications and to the surface modification of polymeric substrates utilizing the subject diazo composition.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: December 24, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Uan G. Kang, Joseph W. Raksis, Clifton L. Kehr, Clifford A. Ferrin, Jr.
  • Liquid photopolymers curable to fire-retardant, hydrolysis resistant compositions
    Patent number: 4591522
    Abstract: Novel fire-retardant and hydrolysis resistant, liquid, photosensitive compositions are disclosed comprising(1) the reaction product of(a) an aliphatic unsaturation containing chlorendate, and(b) a non-ester containing polythiol, said (a) and (b) being reacted non-stoichiometrically;(2) a member of the group consisting of either (a) or (b) in an amount up to that sufficient to react with the excess of the other in (1) and a liquid acrylate monomer or oligomer, and(3) at least one photoinitiator.Acrylates or methacrylate monomers are optionally added to the composition.
    Type: Grant
    Filed: January 4, 1985
    Date of Patent: May 27, 1986
    Assignee: W. R. Grace & Co.
    Inventors: Uan G. Kang, Richard W. Bush, Arthur D. Ketley, Clifford A. Ferrin, Jr.