Patents by Inventor Dennis M. Katkocin

Dennis M. Katkocin 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 cyclodextrin glycosyl transferase and processes using it
    Patent number: 5501968
    Abstract: Novel cyclodextrin glycosyl transferases (CGTase) can be produced by anaerobic cultivation of strains of Thermoanaerobacter or Thermoanaerobium. They are more thermostable than known CGTases and have temperature optimum about 95.degree. C.The novel CGTases can be used for starch liquefaction at pH 4.5 and temperature exceeding 100.degree. C. in the production of dextrose or ethanol. They can also be used for conversion of liquefied starch to cyclodextrin at a temperature of 80.degree.-90.degree. C.A method for enzymatically converting solid and liquefied starch into cyclodextrin using cyclodextrin glycosyl transferases (CGTase) elaborated by thermophilic obligate anaerobic strains belonging to the genus Clostridium. These CGTases are characterized by thermostability and a capability to liquefy starch and/or to convert liquefied starch to cyclodextrin at pH 5.0-5.5 and 60.degree.-90.degree. C.
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: March 26, 1996
    Assignee: Novo Nordisk A/S
    Inventors: Robert L. Starnes, Philip C. Trackman, Dennis M. Katkocin
  • Microbial sulfhydryl oxidase
    Patent number: 4632905
    Abstract: A sulfhydryl oxidase from Aspergillus sojae, having a unit activity of about 2000 units per gm of protein enzyme preparation and essentially free from interfering activities.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: December 30, 1986
    Assignee: Novo Laboratories, Inc.
    Inventors: Robert L. Starnes, Dennis M. Katkocin, Carl A. Miller, Robert J. Strobel, Jr.
  • Novel thermostable pullulanase enzyme and method for its production
    Patent number: 4628028
    Abstract: This invention relates to a pullulanase enzyme exhibiting thermostability at a pH of about 5 which is derived from thermophilic, obligately anaerobic bacterium. T. brockii, and to a process for its production. The pullulanase is useful for preparation of maltotriose and for conversion of starch to maltose syrups.
    Type: Grant
    Filed: May 23, 1985
    Date of Patent: December 9, 1986
    Assignee: CPC International Inc.
    Inventors: Dennis M. Katkocin, Nancy W. Zeman, Shiow-Shong Yang
  • Novel thermostable, aciduric alpha-amylase and method for its production
    Patent number: 4578352
    Abstract: This invention relates to an alpha-amylase enzyme exhibiting thermostability at an acidic pH which is derived from a spore-forming, thermophilic, anaerobic bacterium and to a process for its production. This alpha-amylase is especially useful for the preparation of glucose-containing syrups from starch.
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: March 25, 1986
    Assignee: CPC International Inc.
    Inventors: Dennis M. Katkocin, Nancy S. Word, Shiow-Shong Yang
  • Thermostable glucoamylase and method for its production
    Patent number: 4536477
    Abstract: This invention relates to a glucoamylase enzyme exhibiting thermostability at pH values between 6 and 7 which is derived from a spore-forming, thermophilic, anaerobic bacterium and to a process for its production. The glucoamylase is especially useful for the preparation of glucose-containing syrups from starch.
    Type: Grant
    Filed: August 17, 1983
    Date of Patent: August 20, 1985
    Assignee: CPC International Inc.
    Inventors: Dennis M. Katkocin, Nancy S. Word, Shiow-Shong Yang