Patents by Inventor C. George Hollis

C. George Hollis 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: 5719172
    Abstract: Compositions comprising 2-(thiocyanomethylthio)benzo-thiazole and at least one organic acid or its salt are disclosed which are synergistically effective compared to the respective components alone in controlling the growth of microorganisms in or on a material or medium. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: February 17, 1998
    Assignee: Buckman Laboratories International, Inc.
    Inventors: David Oppong, C. George Hollis
  • Patent number: 5681862
    Abstract: A method for controlling the growth of at least one microorganism in an aqueous system susceptible to the growth of said microorganism and in recognized need of said control comprising the step of adding to said aqueous system an ionene polymer in an amount effective to inhibit the growth at least one microorganism selected from Campylobacter spp., Mycobacterium spp., Shigella spp., ribrio spp., Yersinia spp., Entamoeba spp., and poliovirus. The aqueous system is selected from potable water, sewage, and other nonmarine surface water. Methods for controlling the spread of the diseases cholera and polio are also disclosed.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: October 28, 1997
    Assignee: Buckman Laboratories International, Inc.
    Inventors: C. George Hollis, Percy A. Jaquess
  • Patent number: 5604250
    Abstract: Compositions comprising 2-(thiocyanomethylthio)benzothiazole and at least one organic acid or its salt are disclosed which are synergistically effective compared to the respective components alone in controlling the growth of microorganisms in or on a material or medium. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: February 18, 1997
    Assignee: Buckman Laboratories International, Inc.
    Inventors: David Oppong, C. George Hollis
  • Patent number: 5494904
    Abstract: Compositions comprising 2-(thiocyanomethylthio)benzothiazole and at least one organic acid or its salt are disclosed which are synergistically effective compared to the respective components alone in controlling the growth of microorganisms in or on a material or medium. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: February 27, 1996
    Assignee: Buckman Laboratories International, Inc.
    Inventors: David Oppong, C. George Hollis
  • Patent number: 5411666
    Abstract: A composition for and methods of removing biofilm and controlling its development in industrial water systems. The water in such systems is treated with a combination of at least two biologically produced enzymes and a surface active agent, preferably an anionic surfactant.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: May 2, 1995
    Assignee: Buckman Laboratories International, Inc.
    Inventors: C. George Hollis, John P. Terry, Percy A. Jaquess
  • Patent number: 5371083
    Abstract: Synergistic combinations of ionene polymers and hexahydro-1,3,5-tris(2-hydroxethyl)-s-triazine for use in controlling fungal and bacterial growth in synthetic metal working fluids.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: December 6, 1994
    Assignee: Buckman Laboratories International, Inc.
    Inventors: C. George Hollis, S. Rao Rayudu
  • Patent number: 5250194
    Abstract: A method for inhibiting the growth of microorganisms in which an N-dodecyl heterocyclic compound in an amount effective to inhibit the growth of microorganisms is contacted with an aqueous system susceptible to such growth. N-dodecyl heterocylic compounds are also shown to be useful as microbicides in the inhibition of the formation of slime in aqueous systems or the deterioration or disfigurement of susceptible substances due to microbiological growth. Microbicidal compositions containing an N-dodecyl heterocyclic compound in a non-pharmaceutically acceptable carrier are also described.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: October 5, 1993
    Assignee: Buckman Laboratories International, Inc.
    Inventors: C. George Hollis, S. Rao Rayudu, Marilyn S. Whittemore
  • Patent number: 5198440
    Abstract: Disclosed here are synergistic combinations of 2-(Thiocyanomethylthio)benzothiazole and hexahydro-1,3,5-tris(2-hydroxyethyl)-s-triazine for use in controlling the growth of at least one microorganism, such as fungi and bacteria, in aqueous fluids, such as metalworking fluids. Methods of controlling the growth of at least one microorganism are also disclosed.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: March 30, 1993
    Assignee: Buckman Laboratories International, Inc.
    Inventors: David Oppong, C. George Hollis
  • Patent number: 5196443
    Abstract: Synergistic combinations of 2-(Thiocyanomethylthio)-benzothiazole and a mixture of 4,4-dimethyloxazolidine and 3,4,4-trimethyloxazolidine for use in controlling the growth of at least one microorganism, such as fungi and bacteria, in aqueous fluids, such as metalworking fluids.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: March 23, 1993
    Assignee: Buckman Laboratories International, Inc.
    Inventors: David Oppong, C. George Hollis
  • Patent number: 5128100
    Abstract: A process for inhibiting the adhesion of bacterial cells to solid surfaces in aqueous systems and thus controlling biological fouling comprising adding a water-soluble ionene polymer to the aqueous systems in an amount ranging from about 0.5 ppm to about 50 ppm based on the weight of aqueous liquid in the system.
    Type: Grant
    Filed: August 14, 1991
    Date of Patent: July 7, 1992
    Assignee: Buckman Laboratories, Intl., Inc.
    Inventors: C. George Hollis, Percy A. Jaquess
  • Patent number: 5093078
    Abstract: Polymeric quaternary ammonium trihalides, preferably triiodides, and use of polymeric quaternary ammonium trihalides to inhibit the growth of microorganisms in aquatic systems, to disinfect or sanitize surfaces and to disinfect the skin of animals, including humans.
    Type: Grant
    Filed: July 18, 1990
    Date of Patent: March 3, 1992
    Assignee: Buckman Laboratories International, Inc.
    Inventors: C. George Hollis, S. Rao Rayudu
  • Patent number: 4960590
    Abstract: Polymeric quaternary ammonium trihalides, preferably triiodides, and use of polymeric quanternary ammonium trihalides to inhibit the growth of microorganisms in aquatic systems, to disinfect or sanitize surfaces and to disinfect the skin of animals, including humans.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: October 2, 1990
    Assignee: Buckman Laboratories International, Inc.
    Inventors: C. George Hollis, S. Rao Rayudu
  • Patent number: 4866080
    Abstract: A method for the control of fouling by marine and fresh water mollusks through the use of the chemical compound, 2-(thiocyanomethylthio)benzothiazole. The disclosed method is particularly useful in controlling fouling by species of fresh water Asiatic clams of the genus Corbicula, the most common of which is C. fluminea.
    Type: Grant
    Filed: January 13, 1988
    Date of Patent: September 12, 1989
    Assignee: Buckman Laboratories International, Inc.
    Inventors: C. George Hollis, Richard W. Lutey
  • Patent number: 4789489
    Abstract: A method for the control of fouling by marine and fresh water mollusks through the use of an ionene polymer. The disclosed method is particularly useful in controlling fouling by species of fresh water Asiatic clams of the genus Corbicula, the most common of which is C. fluminea.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: December 6, 1988
    Assignee: Buckman Laboratories International, Inc.
    Inventors: C. George Hollis, Richard W. Lutey