Patents by Inventor R. Alan Hardwick

R. Alan Hardwick 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: 5536475
    Abstract: An apparatus for magnetic cell separation using paramagnetic microbeads includes a base upon which is movably carried a rocker member. The rocker member carries both a primary processing container in which a mixture of liquid with cells and paramagnetic microbeads is received; and a primary magnet movable from a first position adjacent to the primary container to magnetically capture the microbeads, and a second position spaced from the primary container to magnetically release the microbeads. The mixture of liquid with cells and microbeads is agitated by tilting motions of the rocker assembly, thereby achieving the binding of target cells to microbeads. The paramagnetic microbeads, with bound target cells, are captured and released by movements of the primary magnet between its first and second positions. A secondary magnet is placed downstream from the primary magnet to capture any paramagnetic microbeads which might escape from the primary magnet.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: July 16, 1996
    Assignee: Baxter International Inc.
    Inventors: Ahmad-Maher Moubayed, R. Alan Hardwick
  • Patent number: 5336760
    Abstract: The invention provides an apparatus and method for the preparation of a pharmaceutical composition comprising a complex of an antigen component and the corresponding antibody component in a pharmacologically acceptable carrier. The apparatus comprises a housing chamber for containing paramagnetic particles and a platform against which the housing chamber is releasably retained. The platform contains one or more magnets located adjacent to the housing chamber when the housing chamber is positioned on the platform. The platform is secured to a support which allows the platform, and thus the housing chamber, to be rotated between a vertical and a horizontal position.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: August 9, 1994
    Assignee: Baxter International Inc.
    Inventors: R. Alan Hardwick, Alan K. Smith, William C. Lake, Dennis E. Chenoweth