Patents by Inventor Mark W. Welter

Mark W. Welter 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).

  • Isospora suis sporozoite antigen
    Patent number: 5861160
    Abstract: Isospora suis is propagated using a swine testicular cell line which facilitates production of sporozoites and merozoites, either or both of which can be used in a vaccine for swine. Antibodies against Isospora suis sporozoites, which inhibit the infectivity of the sporozoites for the swine testicular cells, were made. These neutralizing antibodies were used to identify an apparent sporozoite attachment protein and cloned cDNA encoding a portion of the protein. The cloned cDNA was sequenced and the corresponding amino acid sequence of the antigenic sporozoite protein revealed two areas having repeated amino acid sequences, which may likewise be used in a vaccine.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: January 19, 1999
    Assignee: Ambico, Inc.
    Inventors: Douglas P. Quick, Mark W. Welter, C. Joseph Welter, Lisa M. Welter, Ann M. Steger
  • Type-C rotavirus cultures and uses therefor
    Patent number: 5283172
    Abstract: Type-C rotavirus are propagated in swine testicular cells with reduced concentrations of proteolytic enzyme for subsequent production of antigen and antiserum for use in diagnostic kits and for killed vaccines to prevent Type C rotavirus infections. Propagation of Type C rotavirus in the ST cells can also lead to virus modification for subsequent use as a modified live virus vaccine to prevent Type C rotavirus infections.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: February 1, 1994
    Assignee: Ambico, Inc.
    Inventors: Mark W. Welter, David M. Chambers, C. Joseph Welter
  • Type-C rotavirus cultures and uses therefor
    Patent number: 5147639
    Abstract: Type-C rotavirus are propagated in swine testicular cells with reduced concentrations of proteolytic enzyme for subsequent production of antigen and antiserum for use in diagnostic kits and for killed vaccines to prevent Type C rotavirus infections. Propagation of Type C rotavirus in the ST cells can also lead to virus modification for subsequent use as a modified live virus vaccine to prevent Type C rotavirus infections.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: September 15, 1992
    Assignee: Ambico, Inc.
    Inventors: Mark W. Welter, David M. Chambers, C. Joseph Welter