Patents by Inventor Joseph T. Lundquist, Jr.

Joseph T. Lundquist, Jr. 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).

  • Patent number: 4731310
    Abstract: A polymer bonded sheet product suitable for use as a cathodic electrode in a non-aqueous battery system wherein the cathodic electrode is a microporous sheet composed of from 6-10 weight percent polyethylene having a molecular weight of 200,000 to 500,000, 90-94 weight percent of titanium disulfide particulate material and from 0 to 2 weight percent of a plasticizer for the polyethylene; the sheet having a void volume of from 15 to 25 percent.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: March 15, 1988
    Assignee: W. R. Grace & Co.
    Inventors: Menahem Anderman, Joseph T. Lundquist, Jr.
  • Patent number: 4434215
    Abstract: A composition suitable for use as a battery separator comprising a substantially homogeneous mixture of a copolymer of ethylene and acrylic acid having from 10 to 23 mole percent acrylic acid therein and a melt index of from about 0.1 to 5 in combination with a copolymer of ethylene and acrylic acid having at least 25 mole percent acrylic acid therein and having a melt index of at least about 10. The present invention is further directed to a process of forming a sheet product from the subject composition and the use of the formed product as a battery separator.
    Type: Grant
    Filed: September 2, 1982
    Date of Patent: February 28, 1984
    Assignee: W. R. Grace & Co.
    Inventors: Walter R. Wszolek, Joseph T. Lundquist, Jr.
  • Patent number: 4368922
    Abstract: Underground coal is mined by sinking a hole into the coal, passing a coal solvent to the coal, and recovering a coal solution and/or dispersion products from the resulting solution or suspension.
    Type: Grant
    Filed: December 2, 1980
    Date of Patent: January 18, 1983
    Assignee: W. R. Grace & Co.
    Inventors: Adley W. Hemphill, Joseph T. Lundquist, Jr., Carl V. McDaniel
  • Patent number: 4330602
    Abstract: A battery separator useful in alkaline battery systems, and a process of forming the same, is formed from a composition having 30-70% by weight synthetic pulp, 15-65% by weight alkali resistant inorganic filler, and 1-35% by weight of long fibers having lengths of between 1/4 and 1 inch. The long fibers may be polyester, polyacrylic, polyamide, polyolefin, or other staple fiber material. The process for forming the subject battery separator requires first forming a substantially uniform aqueous mixture of the subject composition, sequentially treating said composition with a combination of a cationic and an anionic agent, applying the treated composition to a standard paper-making apparatus at a grammage rate to cause the resultant dried sheet to have a thickness of less than about 10 mils, and forming a sheet product.
    Type: Grant
    Filed: July 17, 1980
    Date of Patent: May 18, 1982
    Assignee: W. R. Grace & Co.
    Inventors: Dennis D. O'Rell, Nguyen V. Hien, Joseph T. Lundquist, Jr., Christian B. Lundsager
  • Patent number: 4327164
    Abstract: A battery separator, and a method of forming the same, which exhibits good electrical conductivity and a high degree of inhibition to dendrite formation, is in the form of a thin sheet formed from a substantially uniform mixture of a thermoplastic rubber, a filler, a rubber modifier, and a processing aid.
    Type: Grant
    Filed: July 25, 1980
    Date of Patent: April 27, 1982
    Assignee: W. R. Grace & Co.
    Inventors: Stewart C. Feinberg, Christian B. Lundsager, Joseph T. Lundquist, Jr., Robert A. Balouskus
  • Patent number: 4287276
    Abstract: The instant invention is directed to battery separator membranes useful in alkaline battery systems formed from a homogeneous admixture of a polyolefin, a plasticizer, and a filler selected from particulate material having a surface area of from 100 to 385 m.sup.2 /cc and a pore volume of at least 0.075 cc/gm.
    Type: Grant
    Filed: June 8, 1979
    Date of Patent: September 1, 1981
    Assignee: W. R. Grace & Co.
    Inventors: Joseph T. Lundquist, Jr., Christian B. Lundsager
  • Patent number: 4285751
    Abstract: A battery separator, and a method of forming the same, which exhibits good electrical conductivity and a high degree of inhibition to dendrite formation, is in the form of a thin sheet formed from a substantially uniform mixture of a thermoplastic rubber and a filler in a volume ratio of from about 1:0.15 to 1:0.6. The thermoplastic rubber is preferably a styrene/elastomer/styrene block copolymer.
    Type: Grant
    Filed: February 29, 1980
    Date of Patent: August 25, 1981
    Assignee: W. R. Grace & Co.
    Inventors: Stewart C. Feinberg, Christian B. Lundsager, Joseph T. Lundquist, Jr., Robert A. Balouskus
  • Patent number: 4264691
    Abstract: A battery interseparator useful in alkaline battery systems, and a process of forming the same, is formed from a composition having 30-70% by weight synthetic pulp, 15-65% by weight alkali resistant inorganic filler, and 1-35% by weight of long fibers having lengths of between 1/4 and 1 inch. The long fibers may be polyester, polyacrylic, polyamide, polyolefin, or other staple fiber material. The process for forming the subject battery interseparator requires first forming a substantially uniform aqueous mixture of the subject composition, sequentially treating said composition with a combination of a cationic and an anionic agent, applying the treated composition to a standard paper-making apparatus at a grammage rate to cause the resultant dried sheet to have a thickness of less than 10 mils, and forming a sheet product.
    Type: Grant
    Filed: July 13, 1979
    Date of Patent: April 28, 1981
    Assignee: W. R. Grace & Co.
    Inventors: Dennis D. O'Rell, Nguyen V. Hien, Joseph T. Lundquist, Jr., Christian B. Lundsager
  • Patent number: 4224393
    Abstract: A battery separator, and a method of forming the same, which exhibits good electrical conductivity and a high degree of inhibition to dendrite formation, is in the form of a thin sheet formed from a substantially uniform mixture of a thermoplastic rubber and a filler in a volume ratio of from about 1:0.15 to 1:0.6. The thermoplastic rubber is preferably a styrene/elastomer/styrene block copolymer.
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: September 23, 1980
    Assignee: W. R. Grace & Co.
    Inventors: Stewart C. Feinberg, Christian B. Lundsager, Joseph T. Lundquist, Jr., Robert A. Balouskus