Patents by Inventor Jaewon L. Shim

Jaewon L. Shim 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).

  • Non-heated gellan gum gels
    Patent number: 4563366
    Abstract: Gellan gum food gels are formed without first going through a heating and cooling cycle.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: January 7, 1986
    Assignee: Merck & Co., Inc.
    Inventors: John K. Baird, Jaewon L. Shim
  • Gellan gum/gelatin blends
    Patent number: 4517216
    Abstract: Blends of gellan gum and gelatin are disclosed which exhibit a synergistic increase in gel strength.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: May 14, 1985
    Assignee: Merck & Co., Inc.
    Inventor: Jaewon L. Shim
  • Non-heated gellan gum gels
    Patent number: 4503084
    Abstract: Gellan gum gels are formed without first going through a heating and cooling cycle.
    Type: Grant
    Filed: May 31, 1983
    Date of Patent: March 5, 1985
    Assignee: Merck & Co., Inc.
    Inventors: John K. Baird, Jaewon L. Shim
  • Copolymers of N,N-dimethylacrylamide and acrylamide
    Patent number: 4326970
    Abstract: Novel copolymers of N,N-dimethylacrylamide and acrylamide are disclosed where the ratio of NNDMA to AM ranges from 10:90 to 95:5. The hydrolyzed copolymer is also disclosed where hydrolysis ranges from 5% to 65% and the ratio of NNDMA to AM is 5:95 to 95:5. These hydrolyzed copolymers are useful in enhanced oil recovery operations.
    Type: Grant
    Filed: May 2, 1980
    Date of Patent: April 27, 1982
    Assignee: Merck & Co., Inc.
    Inventors: Ian W. Cottrell, John K. Baird, Jaewon L. Shim
  • Synergistic blends of cellulase-free xanthan gum and cellulosics
    Patent number: 4313765
    Abstract: This invention relates to a blend of cellulase-free xanthan gum with a number of cellulosics, including carboxymethyl cellulose, hydroxyethyl cellulose and hydroxypropylmethyl cellulose. At 1:1 weight ratio, these blends show surprising viscosities when tested in aqueous solutions of 1%, 0.5%, 0.25% and 0.1% total gum concentration. The blends have utility in any application where cellulosics are used as thickeners, such as industrial or food applications, e.g., toothpaste, or drink mix formulations.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: February 2, 1982
    Assignee: Merck & Co., Inc.
    Inventors: John K. Baird, Paul A. Sandford, Jaewon L. Shim
  • Copolymers of N,N-dimethylacrylamide and acrylamide
    Patent number: 4254249
    Abstract: Novel copolymers of N,N-dimethylacrylamide and acrylamide are disclosed where the ratio of NNDMA to AM ranges from 10:90 to 95:5. The hydrolyzed copolymer is also disclosed where hydrolysis ranges from 5% to 65% and the ratio of NNDMA to AM is 5:95 to 95:5. These hydrolyzed copolymers are useful in enhanced oil recovery operations.
    Type: Grant
    Filed: November 17, 1978
    Date of Patent: March 3, 1981
    Assignee: Merck & Co., Inc.
    Inventors: Ian W. Cottrell, John K. Baird, Jaewon L. Shim
  • Use of either regular or low-calcium heteropolysaccharide S-7 in explosives and compositions thereby produced
    Patent number: 4238255
    Abstract: Heteropolysaccharide S-7, either in the regular or low-calcium form, is used at levels from about 0.1 to 10%, preferably 0.1 to 3%, most preferably 0.2 to 2%, in aqueous ammonium nitrate solutions to provide explosive compositions which rapidly develop viscosity and can be easily adapted to field use.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: December 9, 1980
    Assignee: Merck & Co., Inc.
    Inventors: Ralph Moorhouse, Jaewon L. Shim
  • Amphoteric graft copolymers of xanthomonas hydrophilic colloid and partially N-aminomethylated acrylamide
    Patent number: 4155885
    Abstract: A series of novel amphoteric graft copolymers of xanthomonas hydrophilic colloid and partially N-aminoalkylated acrylamide has been prepared by reacting the corresponding acrylamide copolymer with an alkyl amine and an active aldehyde. The new copolymer is cationized via acidification or quaternization, and is reverted to its anionic form via basification.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: May 22, 1979
    Assignee: Merck & Co., Inc.
    Inventors: Joseph S. Racciato, Ian W. Cottrell, Jaewon L. Shim