Patents by Inventor Diana L. Klug

Diana L. Klug 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).

  • Azeotrope(like) compositions of pentafluorodimethyl ether and difluoromethane
    Patent number: 5605882
    Abstract: This invention relates to compositions that include at least one fluoroether and at least one hydrofluorocarbon. Included in this invention are compositions of a cyclic or acyclic hydrofluoroether of the formula C.sub.a F.sub.b H.sub.2a+2-b O.sub.c wherein a=2 or 3 and 3.ltoreq.b.ltoreq.8 and c=1 or 2 and a hydrofluorocarbon of the formula C.sub.n F.sub.m H.sub.2n+2-m wherein 1.ltoreq.n.ltoreq.4 and 1.ltoreq.m.ltoreq.8. Such compositions may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: February 25, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Diana L. Klug, Barbara H. Minor, Donna M. Patron, Tuneen E. C. Chisolm, Allen C. Sievert
  • Compositions of 2,2-dichloro-1,1,1-trifluoroethane and pentafluoropropane
    Patent number: 5447646
    Abstract: Compositions of 2,2-dichloro-1,1,1-trifluoroethane and 1,1,2,2,3-pentafluoropropane, 1,1,2,3,3-pentafluoropropane or 1,1,1,2,3-pentafluoropropane.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: September 5, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Tuneen E. C. Chisolm, Diana L. Klug, Mark B. Shiflett, Akimichi Yokozeki
  • Adipic acid purification
    Patent number: 5296639
    Abstract: A process for purification of adipic acid during crystallization by modifying the crystal morphology to decrease incorporation of impurities through the introduction of an effective amount of an additive to the crystallizing solution.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: March 22, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Diana L. Klug, Johannus H. Van Mil