Patents by Inventor Margaret E. Long

Margaret E. Long 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).

  • Thermostable lactase derived from bacillus
    Patent number: 4323651
    Abstract: A thermostable lactase is obtained by cultivation of a member of the genus Bacillus in a suitable nutrient medium. The resulting lactase-containing cells or the cell-free enzyme are useful for the hydrolysis of lactose in a variety of substrate media.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: April 6, 1982
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Margaret E. Long, Chin K. Lee
  • Thermostable lactase derived from Bacillus coagulans
    Patent number: 4179335
    Abstract: A thermostable lactase is obtained by cultivation of a member of the genus Bacillus in a suitable nutrient medium. The resulting lactose-containing cells or the cell-free enzyme are useful for the hydrolysis of lactose in a variety of substrate media.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: December 18, 1979
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Margaret E. Long, Chin K. Lee
  • Glucose isomerization process
    Patent number: 4060456
    Abstract: Microbial cell material having a glucose-isomerizing enzyme associated therewith is subjected to flocculation conditions to produce a flocculated aggregate containing the cell material. Glucose syrups are brought into contact with the flocculated aggregates and a portion of the glucose is thereby converted to fructose in the presence of the glucose-isomerizing enzyme.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: November 29, 1977
    Assignee: R. J. Reynolds Tobacco Company
    Inventor: Margaret E. Long
  • Aggregate of flocculated cells
    Patent number: 3989597
    Abstract: Microbial cells having active enzymes associated therewith are subjected to flocculation conditions to produce a flocculated whole cell aggregate that is useful in effecting enzyme-catalyzed chemical transformations. Substrates are brought into contact with the flocculated cell aggregates where they undergo chemical transformations in the presence of active enzymes associated with the cells.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: November 2, 1976
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chin K. Lee, Margaret E. Long
  • Aggregate of dried flocculated cells
    Patent number: 3989596
    Abstract: Microbial cells having active enzymes associated therewith are subjected to flocculation conditions to produce a flocculated whole cell aggregate that is subsequently dried. The dried aggregate is useful in effecting enzyme-catalyzed chemical transformations. Substrates are brought into contact with the flocculated cell aggregates where they undergo chemical transformations in the presence of active enzymes associated with the cells.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: November 2, 1976
    Assignee: R. J. Reynolds Tobacco Company
    Inventor: Margaret E. Long
  • Enzymatic process using immobilized microbial cells
    Patent number: RE29130
    Abstract: Microbial cells having active enzymes associated therewith are subjected to flocculation conditions to produce a flocculated whole cell aggregate that is useful in effecting enzyme-catalyzed chemical transformations. Substrates are brought into contact with the flocculated cell aggregates where they undergo chemical transformations in the presence of active enzymes associated with the cells.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: February 1, 1977
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chin K. Lee, Margaret E. Long
  • Enzymatic process using immobilized microbial cells
    Patent number: RE29136
    Abstract: Microbial cells having active enzymes associated therewith are subjected to flocculation conditions to produce a flocculated whole cell aggregate that .Iadd.is subsequently dried. The dried aggregate .Iaddend.is useful in effecting enzyme-catalyzed chemical transformations. Substrates are brought into contact with the flocculated cell aggregates where they undergo chemical transformations in the presence of active enzymes associated with the cells.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: February 15, 1977
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chin K. Lee, Margaret E. Long
  • Process of preparing glucose isomerase
    Patent number: RE29691
    Abstract: Glucose is converted to fructose in the presence of an enzyme preparation derived from a member of the genus Arthrobacter. .Iadd.
    Type: Grant
    Filed: May 18, 1973
    Date of Patent: July 4, 1978
    Assignee: R.J. Reynolds Tobacco Company
    Inventor: Margaret E. Long
  • Process of preparing glucose isomerase
    Patent number: RE29692
    Abstract: .Iadd.Glucose is converted to fructose in the presence of an enzyme preparation derived from a member of the genus Arthrobacter. .Iaddend.
    Type: Grant
    Filed: January 28, 1976
    Date of Patent: July 4, 1978
    Assignee: R.J. Reynolds Tobacco Company
    Inventor: Margaret E. Long