Patents by Inventor Stephen Drap

Stephen Drap 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).

  • Viscoelastic rebond polyurethane foam structure
    Publication number: 20060106124
    Abstract: A rebond polyurethane foam structure is formed by mixing shredded particles of polyurethane foam wherein at least 20% by weight of such particles comprise particles of viscoelastic polyurethane foam. The foam particles are wetted with a liquid prepolymer binder that is cured when the wetted admixture is compressed at a compression ratio of at least about 3. Despite the small viscoelastic foam particle size and the effects of compression and binder curing, the resulting polyurethane foam structure surprisingly has a viscoelastic (slow recovery) character.
    Type: Application
    Filed: November 12, 2004
    Publication date: May 18, 2006
    Applicant: FOAMEX L.P.
    Inventors: John Fink, George De La Garza, John Rucker, Beat Niederoest, Stephen Drap
  • Transport of aqueous coal slurries
    Patent number: 4242098
    Abstract: Compositions containing small amounts of named water soluble polymers in an aqueous coal slurry permit the extrusion, pumping and transport of higher solids content aqueous coal slurries.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: December 30, 1980
    Assignee: Union Carbide Corporation
    Inventors: David B. Braun, Stephen Drap, Henry E. Fritz, Arthur K. Ingberman
  • Poly(ethylene oxide) compositions
    Patent number: 4211681
    Abstract: Non-toxic, water soluble compositions of high molecular weight poly(ethylene oxide), propylene glycol, water, and stabilizer allow the thermoplastic processing of high molecular weight poly(ethylene oxide) to proceed more facilely without extensive polymer decomposition. The compositions can be used to produce shaped articles such as films or tubes; they can also be used as a denture adhesive.
    Type: Grant
    Filed: August 16, 1978
    Date of Patent: July 8, 1980
    Assignee: Union Carbide Corporation
    Inventors: David B. Braun, Stephen Drap
  • Process for forming ceramic bodies employing aqueous lubricant
    Patent number: 4171337
    Abstract: A process for forming green ceramic bodies using an aqueous solution of a high molecular weight, water-soluble polymer as a lubricant.
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: October 16, 1979
    Assignee: Union Carbide Corporation
    Inventors: Meyer R. Rosen, David B. Braun, Stephen Drap