Patents by Inventor Susan M. Sobek

Susan M. Sobek 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).

  • Powder coating composition comprising unsaturated polyesters and uses thereof
    Patent number: 6194525
    Abstract: The powder coating composition of the present invention includes a low-temperature mixture of a powder (A) and a powder (B), in which at least the powder (A) includes an unsaturated polyester resin and a free radical initiator for initiating polymerization of unsaturated polyester resins in the powder coating composition and the powder (B) includes a polymerization promoter and methods for making the composition. The powder (B) may further include an unsaturated polyester. The powders (A) and (B) are physically mixed at temperatures below which the polymerization promoter would cause the free radical initiator to initiate polymerization of the powder coating composition. Subsequently, the physically mixed powder coating composition is applied to a substrate and cured, during which the polymerization promoter causes the free radical initiator to initiate the curing reaction.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: February 27, 2001
    Assignee: Ferro Corporation
    Inventors: Carlos E. Ortiz, Atam P. Sahni, Gerald W. Drabeck, Anthony S. Scheibelhoffer, Susan M. Sobek, Douglas E. Brand
  • Polyester-arcylic graft polymers for use in powder coatings
    Patent number: 5350810
    Abstract: A thermosetting powder paint coating containing a polymeric binder comprising a polyester graft acrylic copolymer and a low molecular weight crystalline polyester. The coatings can be pigmented or non-pigmented. The polyester-graft-acrylic copolymer can be self-crosslinking by the inclusion of beta-hydroxy ester groups or crosslinked by an external crosslinker.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: September 27, 1994
    Assignee: Ferro Corporation
    Inventors: Henry J. DeGraaf, Susan M. Sobek
  • Polyester-acrylic graft polymers for use in powder coatings
    Patent number: 5280089
    Abstract: A thermosetting powder paint coating containing a polymeric binder comprising a polyester graft acrylic copolymer and a low molecular weight crystalline polyester. The coatings can be pigmented or non-pigmented. The polyester-graft-acrylic copolymer can be self-crosslinking by the inclusion of beta-hydroxy ester groups or crosslinked by an external crosslinker.
    Type: Grant
    Filed: February 3, 1992
    Date of Patent: January 18, 1994
    Assignee: Ferro Corporation
    Inventors: Henry J. DeGraaf, Susan M. Sobek
  • Transesterification cure of thermosetting coatings
    Patent number: 4897450
    Abstract: A thermosetting paint coating composition is based on a thermosetting polymeric binder comprising a hydroxyl functional polyester polymer and a beta-hydroxy ester acrylic copolymer, where the polymer and copolymer are adapted to crosslink by transesterification in the presence of certain transesterification catalysts.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: January 30, 1990
    Assignee: The Glidden Company
    Inventors: Gary P. Craun, Susan M. Sobek, Wellington F. Berghoff
  • Polyester-acrylic graft polymers for use in powder coatings
    Patent number: RE35759
    Abstract: A thermosetting powder paint coating containing a polymeric binder comprising a polyester graft acrylic copolymer and a low molecular weight crystalline polyester. The coatings can be pigmented or non-pigmented. The polyester-graft-acrylic copolymer can be self-crosslinking by the inclusion of beta-hydroxy ester groups or crosslinked by an external crosslinker.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: March 31, 1998
    Assignee: Ferro Corporation
    Inventors: Henry J. DeGraaf, Susan M. Sobek