Patents by Inventor Terence W. Rave

Terence W. Rave 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).

  • Preparation of hydrophilic polyolefin fibers for use in papermaking
    Patent number: 4273892
    Abstract: Hydrophilic polyolefin fibers may be prepared, for example, by discharging a heated and pressurized solution of an anionic polyolefin composition containing carboxylic functionality into a zone of reduced temperature and pressure, and then modifying the fibers so produced by treatment with an aqueous admixture of selected cationic and anionic water-soluble, nitrogen-containing polymers. Blends of the hydrophilic fibers with wood pulp provide paper products having improved physical properties.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: June 16, 1981
    Assignee: Hercules Incorporated
    Inventor: Terence W. Rave
  • Preparation of hydrophilic styrene maleic anhydride copolymer fibers for use in papermaking
    Patent number: 4158595
    Abstract: Hydrophilic fibers may be prepared by discharging a heated and pressurized dispersion of a styrene-maleic anhydride copolymer into a zone of reduced temperature and pressure, and then modifying the fibers so produced by treatment with an aqueous admixture of selected cationic and anionic water-soluble, nitrogen-containing polymers. Blends of the hydrophilic fibers with wood pulp provide paper products having improved physical properties.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: June 19, 1979
    Assignee: Hercules Incorporated
    Inventor: Terence W. Rave
  • Preparation of hydrophilic polyolefin fibers for use in papermaking
    Patent number: 4156628
    Abstract: Hydrophilic polyolefin fibers may be prepared, for example, by discharging a heated and pressurized solution of an anionic polyolefin composition containing carboxylic functionality into a zone of reduced temperature and pressure, and then modifying the fibers so produced by treatment with an aqueous admixture of selected cationic and anionic water-soluble, nitrogen-containing polymers. Blends of the hydrophilic fibers with wood pulp provide paper products having improved physical properties.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: May 29, 1979
    Assignee: Hercules Incorporated
    Inventor: Terence W. Rave
  • Preparation of hydrophilic styrene maleic anhydride copolymer fibers for use in papermaking
    Patent number: 4154646
    Abstract: Hydrophilic fibers may be prepared by discharging a heated and pressurized dispersion of a styrene-maleic anhydride copolymer into a zone of reduced temperature and pressure, and then modifying the fibers so produced by treatment with an aqueous admixture of selected cationic and anionic water-soluble, nitrogen-containing polymers. Blends of the hydrophilic fibers with wood pulp provide paper products having improved physical properties.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: May 15, 1979
    Assignee: Hercules Incorporated
    Inventor: Terence W. Rave
  • Preparation of hydrophilic polyolefin fibers for use in papermaking
    Patent number: 4154647
    Abstract: Hydrophilic polyolefin fibers may be prepared, for example, by discharging a heated and pressurized solution of an anionic polyolefin composition containing carboxylic functionality into a zone of reduced temperature and pressure, and then modifying the fibers so produced by treatment with an aqueous admixture of selected cationic and anionic water-soluble, nitrogen-containing polymers. Blends of the hydrophilic fibers with wood pulp provide paper products having improved physical properties.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: May 15, 1979
    Assignee: Hercules Incorporated
    Inventor: Terence W. Rave
  • Glyoxal modified poly (beta-alanine) strengthening resins for use in paper
    Patent number: 4082730
    Abstract: Novel resins, useful as strengthening resins for imparting dry and temporary wet strength to paper, are disclosed. The resins are prepared by reacting branched water-soluble poly(.beta.-alanine) with glyoxal.
    Type: Grant
    Filed: January 21, 1976
    Date of Patent: April 4, 1978
    Assignee: Hercules Incorporated
    Inventor: Terence W. Rave
  • Glyoxal modified poly(.beta.-alanine) strengthening resins for use in paper
    Patent number: 4079044
    Abstract: Novel resins, useful as strengthening resins for imparting dry and temporary wet strength to paper, are disclosed. The resins are prepared by reacting branched water-soluble poly(.beta.-alanine) with glyoxal.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: March 14, 1978
    Assignee: Hercules Incorporated
    Inventor: Terence W. Rave
  • Glyoxal modified poly(beta-alanine) strengthening resins for use in paper
    Patent number: 4079043
    Abstract: Novel resins, useful as strengthening resins for imparting dry and temporary wet strength to paper, are disclosed. The resins are prepared by reacting branched water-soluble poly(beta-alanine) with glyoxal.
    Type: Grant
    Filed: February 12, 1976
    Date of Patent: March 14, 1978
    Assignee: Hercules Incorporated
    Inventor: Terence W. Rave
  • Paper strengthened with glyoxal modified poly(.beta.-alanine) resins
    Patent number: 4035229
    Abstract: Novel resins, useful as strengthening resins for imparting dry and temporary wet strength to paper, are disclosed. The resins are prepared by reacting branched water-soluble poly(.beta.-alanine) with glyoxal.
    Type: Grant
    Filed: January 28, 1976
    Date of Patent: July 12, 1977
    Assignee: Hercules Incorporated
    Inventor: Terence W. Rave