Patents by Inventor H. Nelson Beck

H. Nelson Beck 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).

  • Process for making a microporous membrane from a blend containing a poly (phenylene sulfide) polymer, an amorphous polymer, and optionally a solvent
    Patent number: 5888434
    Abstract: The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(phenylene sulfide) polymer by forming a mixture of an unsulfonated poly(phenylene sulfide) polymer, an amorphous polymer, and optionally a plasticizer, heating the resulting mixture, extruding or optionally casting the mixture into a membrane, controlled cooling (quenching) or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, and/or after leaching.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: March 30, 1999
    Assignee: The Dow Chemical Company
    Inventors: Robert D. Mahoney, Jiro Kawamoto, Richard A. Lundgard, Mark F. Sonnenschein, Hawk S. Wan, H. Nelson Beck
  • Process of making microporous membranes from poly(etheretherketone)-type polymers and low melting point crystallizable polymers
    Patent number: 5227101
    Abstract: The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type polymer, a low melting point crystallizable polymer, and a plasticizer, heating the resulting mixture, extruding or casting the mixture into a membrane, quenching or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, after leaching, or a combination thereof.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: July 13, 1993
    Assignee: The Dow Chemical Company
    Inventors: Robert D. Mahoney, H. Nelson Beck, Richard A. Lundgard, Hawk S. Wan, Jiro Kawamoto, Mark F. Sonnenschein
  • Process for making a microporous membrane from a blend containing a poly(etheretherketone)-type polymer, an amorphous polymer, and a solvent
    Patent number: 5205968
    Abstract: The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type polymer, an amorphous polymer, and a plasticizer, heating the resulting mixture, extruding or casting the mixture into a membrane, quenching or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, and/or after leaching.
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: April 27, 1993
    Assignee: The Dow Chemical Company
    Inventors: Paul A. Damrow, Robert D. Mahoney, H. Nelson Beck, Mark F. Sonnenschein
  • Method for imparting flame resistance to wood surfaces
    Patent number: 4741971
    Abstract: Methods for impregnating the pores of at least partially dried wood with a phosphorus nitride, particularly P.sub.3 N.sub.5, to provide flame resistance are described. Preferably liquid slurries of the phosphorus nitride are impregnated into the exposed pores of the wood using pressure or preferably a partial vacuum in a confined space which removes air from the pores and allows the slurry to impregnate the wood. The liquid is then removed from the wood.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: May 3, 1988
    Assignee: The Dow Chemical Company
    Inventors: H. Nelson Beck, Dalton C. MacWilliams
  • Method for imparting flame resistance to wood using dimethyl (oxiranylmethyl) phosphonate and a catalyst
    Patent number: 4692355
    Abstract: A method and compositions for imparting flame resistance to exposed surfaces of wood by impregnating the wood with dimethyl(oxiranylmethyl)phosphonate (DMOMP) and a catalyst and then reacting wood surfaces with the DMOMP is described. The catalysts are preferably Lewis acids or Lewis bases. The resulting treated wood products are useful in applications where flame resistance is important.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: September 8, 1987
    Assignee: The Dow Chemical Company
    Inventors: H. Nelson Beck, Dalton C. MacWilliams
  • Method for imparting flame resistance to wood using dimethyl(oxiranylmethyl)phosphonate
    Patent number: 4654277
    Abstract: A method for imparting flame resistance to exposed surfaces of wood by impregnating and reacting wood surfaces with dimethyl(oxiranylmethyl)phosphonate (DMOMP) is described. The resulting treated wood products are useful in applications where flame resistance is important.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: March 31, 1987
    Assignee: The Dow Chemical Company
    Inventors: Dalton C. MacWilliams, H. Nelson Beck
  • Method of improving flame resistance of epoxy resins and resulting compositions
    Patent number: 4632973
    Abstract: Epoxy resins reacted with an oxirane group containing phosphonate of the formula: ##STR1## wherein R is hydrogen or lower alkyl and R.sub.1 is lower alkyl are described. The backbone of the epoxy resin contains a functional substituent which reacts with (I) preferably a hydroxyl substituent. The cured epoxy resins reacted with the phosphonate (I) have improved flame resistance or glass temperatures.
    Type: Grant
    Filed: October 18, 1985
    Date of Patent: December 30, 1986
    Assignee: The Dow Chemical Company
    Inventor: H. Nelson Beck