Patents by Inventor William W. Maslanka

William W. Maslanka 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).

  • Organic pigments
    Patent number: 4426483
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: May 11, 1982
    Date of Patent: January 17, 1984
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4414353
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: March 31, 1982
    Date of Patent: November 8, 1983
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4404310
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: September 13, 1983
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4403063
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: September 6, 1983
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4403062
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: September 6, 1983
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Wet-strength resin for paper and method of preparing same
    Patent number: 4388439
    Abstract: Disclosed are novel wet-strength resins for paper, said resins being derived by reacting an epihalohydrin, such as epichlorohydrin, with a polyaminopolyamide derived by reaction of a diester of oxalic acid, such as diethyl oxalate, and methylbisaminopropylamine.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: June 14, 1983
    Assignee: Hercules Incorporated
    Inventor: William W. Maslanka
  • Organic pigments
    Patent number: 4369292
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: June 12, 1980
    Date of Patent: January 18, 1983
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4353818
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: October 12, 1982
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4349641
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: September 14, 1982
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4348257
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: September 7, 1982
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4343729
    Abstract: Disclosed are novel organic pigments adapted particularly for use as tillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: January 21, 1981
    Date of Patent: August 10, 1982
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4311809
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: January 19, 1982
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4293666
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: October 6, 1981
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4293667
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: October 6, 1981
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4282060
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: August 29, 1979
    Date of Patent: August 4, 1981
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4281082
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: July 28, 1981
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Organic pigments
    Patent number: 4235982
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a watersoluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: May 25, 1978
    Date of Patent: November 25, 1980
    Assignee: Hercules, Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence