Patents by Inventor Larry U. L. Tan

Larry U. L. Tan 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: 6696065
    Abstract: A multi-component vaccine composition is described comprising acellular pertussis vaccine components, diphtheria toxoid, tetanus toxoid and inactivated poliovirus. The composition also may contain a conjugate of a capsular polysaccharide on Haemophilus influenzae type b and tetanus toxoid or diphtheria toxoid, which may be reconstituted from a lyophilized state by the other component. The administration of the multiple component vaccine resulted in no diminution of the immunogenicity of any component as a result of interference by other components of the vaccine.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: February 24, 2004
    Assignee: Aventis Pastuer Limited
    Inventors: Raafat E. F. Fahim, Larry U. L. Tan, Luis Barreto, John Thipphawong, Gail E. D. Jackson
  • Patent number: 6399076
    Abstract: Acellular pertussis vaccines comprise purified toxin or toxoid thereof, filamentous haemagglutinin, pertactin and fimbrial agglutinogens formulated to confer protection to at least 70% of members of an at-risk population. The fimbrial agglutinogens may be prepared from a Bordetella strain, particularly a B. pertussis strain, by a multiple step procedure involving extraction of the fimbrial agglutinogens from cell paste and concentrating and purifying the extracted material.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: June 4, 2002
    Assignee: Aventis Pasteur Limited
    Inventors: John R. Vose, Raafat E. F. Fahim, Gail E. D. Jackson, Larry U. L. Tan, Andrew Herbert, Leslie Boux, Luis Barreto, John Thipphawong, Michel H. Klein
  • Publication number: 20010009666
    Abstract: Acellular pertussis vaccines comprise purified toxin or toxoid thereof, filamentous haemagglutinin, pertactin and fimbrial agglutinogens formulated to confer protection to at least 70% of members of an at-risk population. The fimbrial agglutinogens may be prepared from a Bordetella strain, particularly a B. pertussis strain, by a multiple step procedure involving extraction of the fimbrial agglutinogens from cell paste and concentrating and purifying the extracted material.
    Type: Application
    Filed: June 9, 1998
    Publication date: July 26, 2001
    Inventors: JOHN R VOSE, RAAFAT E F FAHIM, GAIL E D JACKSON, LARRY U L TAN, ANDREW HERBERT, LESLIE BOUX, LUIS BARRETO, JOHN THIPPHAWONG, MICHEL H KLEIN
  • Patent number: 5877298
    Abstract: A fimbrial agglutinogen preparation is prepared from a bordetella strain, particularly a B. pertussis strain, by a multiple step procedure involving extraction of the fimbrial agglutinogens from cell paste and concentrating and purifying the extracted material. The fimbrial agglutinogen preparation may be used to prepare acellular pertussis vaccines with other pertussis antigens, including pertussis toxin or toxoid thereof, the 69 kDa protein and filamentous hemagglutinin and other Bordetella antigens.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: March 2, 1999
    Inventors: Raafat E. F. Fahim, John R. Vose, John Thipphawong, Luis Barreto, Gail E. D. Jackson, Larry U. L. Tan, Andrew Herbert, Michel H. Klein
  • Patent number: 4997915
    Abstract: Lymphocytosis promoting factor (LPF) and filamentous hemaglutinin (FHA) are isolated from the growth medium of the Bordatella pertussis organism and purified by selecting adsorbing the LPF and FHA on a selective adsorbing medium, such as filter aids or gel filtration media, at low ionic strength and subsequently removing the adsorbed LPF and FHA at using an aqueous medium of high ionic strength, either simultaneously or sequentially. Prior to desorbtion of the LPF and FHA, the adsorbing medium may be contacted with an aqueous solution of a non-ionic detergent, which enables the LPF and FHA subsequently desorbed to be substantially free from contamination by lipopolysaccharides (LPS). The LPF and FHA may be further purified on hydroxyapatite. The LPF and FHA may be detoxified separately or together by contacting with a cross-linking agent, such as glutaraldehyde or formaldehyde, in the presence of an anti-aggregation agent.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: March 5, 1991
    Assignee: Connaught Laboratories Limited
    Inventors: Larry U. L. Tan, Dirk Alkema, Gail Jackson, Po S. Wah
  • Patent number: 4966850
    Abstract: The present invention provides for the use in the production of cellulolytic and xylanolytic enzymes, particularly xylanase and cellulase, of the microorganism Thermoascus aurantiacus in a culture medium containing at least one of a cellulose or hemicellulose substrate whereby to produce thermostable enzymes, particularly cellulase and xylanase.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: October 30, 1990
    Assignee: Forintek Canada Corp.
    Inventors: Ernest K. C. Yu, Larry U. L. Tan, John N. Saddler