Patents by Inventor Michael Charles Attwell

Michael Charles Attwell 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).

  • Immunoglobulins for administration to piglets
    Patent number: 4096244
    Abstract: Immunoglobulins for new-born piglets to provide them with antibodies effective against disease are administered as a dried particulate serum obtained from animal blood and having a reduced sodium chloride content. Such a serum is palatable to piglets and can be orally administered along with feed-stuffs.
    Type: Grant
    Filed: June 16, 1976
    Date of Patent: June 20, 1978
    Assignee: Canada Packers Limited
    Inventors: Freeman Oswald Newson, Michael Charles Attwell
  • Bovine immunoglobulin isolation process
    Patent number: 3984539
    Abstract: A bovine immunoglobulin fraction for administration to calves to combat scours is prepared from bovine plasma or clear bovine serum by a process of salt fractionation of crude immunoglobulins and redissolving them in aqueous solution, heating the solution to 50.degree.-60.degree.C, cooling and removing coagulated proteins, precipitating out the immunoglobulins by salt fractionation, separating and redissolving the precipitate in aqueous solution, purifying the solution by subjection to a molecular sieve procedure, and sterile filtering.
    Type: Grant
    Filed: December 2, 1974
    Date of Patent: October 5, 1976
    Inventors: Boen Tie Khouw, Michael Charles Attwell