Patents by Inventor Eric A. Meier

Eric A. Meier 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: 5455369
    Abstract: A process for preparing methyl .alpha.-cyanoacrylate in which methyl cyanoacetate is reacted with formaldehyde to form a polymer, which is subsequently depolymerized to the monomeric product, comprises using an ester of poly(ethylene glycol) as the solvent for the polymerization and depolymerization reactions.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: October 3, 1995
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Eric A. Meier, Dilip K. Ray-Chaudhuri, Jules E. Schoenberg
  • Patent number: 5055503
    Abstract: A water resistant, starch-based alkaline corrugating adhesive which includes a polysaccharide graft copolymer containing a reactive aminoethyl halide group.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: October 8, 1991
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Craig H. Leake, John J. Tsai, Eric A. Meier
  • Patent number: 4973641
    Abstract: A polysaccharide graft copolymer containing a reactive aminoethyl halide group is provided, said copolymer represented by:Sacch--g--(M).sub.a --(T).sub.bwhere Sacch is a polysaccharide base substrate, M is a repeating unit of the formula: ##STR1## where X is halogen and R is hydrogen or alkyl of 1 to 2 carbons; T is an ethylenically unsaturated comonomer, a is at least 1 and b is 0 or 1 or more, with the total of a and b being at least 2.Another embodiment provides preparing this graft copolymer by reacting the monomer in a system that is maintained at a pH level of below 7 to prevent premature reaction of the halogen on the aminoethyl halide group during the grafting procedure.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: November 27, 1990
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: John J. Tsai, Eric A. Meier
  • Patent number: 4845305
    Abstract: This invention presents a method for the preparation of isophthalaldehyde in an all-aqueous solution using m-xylenediamine, hexamethylenetetramine, and HCl as the only reactants. Such a process permits the preparation of high yield of a high purity product.
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: July 4, 1989
    Assignee: National Starch and Chemical Corporation
    Inventor: Eric A. Meier
  • Patent number: 4582922
    Abstract: A mixture of methyl anthranilate, dissolved in a water-miscible solvent, with a solution of formaldehyde is reduced in a hydrogen atmosphere in the presence of a hyrogenation catalyst at moderate temperatures and pressures to yield methyl N-methylanthranilate. The invention provides a process which is feasible towards producing the compound in commercial quantities in high purity and good yield.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: April 15, 1986
    Assignee: National Starch and Chemical Corporation
    Inventor: Eric A. Meier
  • Patent number: 4215209
    Abstract: Improved storage-stable anaerobic curing adhesive compositions useful as anaerobic adhesives and sealants are prepared by first mixing a polymerizable acrylate ester monomer, an inhibitor for free radical polymerization, a chelator, and at least an effective amount of an accelerator system consisting of an N-substituted sulfonamide and an aromatic tertiary amine. The resultant homogeneous mixture is thereafter maintained at a temperature of at least about 20.degree. C. for a period of time sufficient to provide the composition with anaerobic curing properties and a specified minimum amount of active oxygen. In one embodiment, the mixture is stirred at a temperature of 45.degree.-80.degree. C. for 10-30 hours. In another embodiment, the mixture is maintained at an elevated temperature without stirring.
    Type: Grant
    Filed: June 22, 1979
    Date of Patent: July 29, 1980
    Assignee: National Starch and Chemical Corporation
    Inventors: Dilip K. Ray-Chaudhuri, Eric A. Meier