Patents by Inventor Jayson C. Vassallo

Jayson C. Vassallo 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).

  • Redispersible polymer powders using polyvinyl pyrrolidone as a dispersing aid
    Patent number: 5252704
    Abstract: A method for preparing a polymer powder which is redispersible in water by atomizing an aqueous non-polyvinyl alcohol stabilized polymer dispersion containing a dispersing aid consisting of vinyl pyrrolidone homopolymer.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: October 12, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Randall P. Bright, Jayson C. Vassallo
  • In situ crosslinking of polyelectrolytes
    Patent number: 4944963
    Abstract: A composition, useful for forming absorbent articles of a carboxylic polyelectrolyte, is prepared by copolymerizing a carboxylic polyelectrolyte monomer, a reactive self-crosslinking monomer and a hydrophobic monomer. The composition in the form of an emulsion or a viscous solution has an extendable shelf life and may be used to produce a superabsorbent material or a substrate impregnated with a superabsorbent material.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: July 31, 1990
    Assignee: McNeil-PPC, Inc.
    Inventors: Shmuel Dabi, Jayson C. Vassallo
  • In situ crosslinking of polyelectrolytes
    Patent number: 4933390
    Abstract: A composition, useful for forming absorbent articles of a carboxylic polyelectrolyte, is prepared by copolymerizing a carboxylic polyelectrolyte monomer, a reactive self-crosslinking monomer and a hydrophobic monomer. The composition in the form of an emulsion or a viscous solution has an extendable shelf life and may be used to produce a superabsorbent material or a substrate impregnated with a superabsorbent material.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: June 12, 1990
    Inventors: Shmuel Dabi, Jayson C. Vassallo