Patents by Inventor Michael G. Whiteside

Michael G. Whiteside 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).

  • Perfusion slit chamber for filter-bound sample analyses
    Patent number: 4681853
    Abstract: A membrane is supported in a chamber for treating the faces of the membrane with a fluid. The chamber is made from two cover plates clamped together with interior support pegs and valve connections for introducing and removing treatment fluid.
    Type: Grant
    Filed: October 23, 1985
    Date of Patent: July 21, 1987
    Inventors: Kenneth J. Hardy, Michael G. Whitesides
  • Package assemblies
    Patent number: 4505389
    Abstract: A package assembly has a rigid base member with at least one pair of parallel lines of weakening defining a tear strip. At least one row of packages is positioned on the base member and removably secured to a tear strip by frangible adhesive. A film of plastic material passes over the packages and is secured to the base member to retain the packages in assembly therewith. The packages are removable from the assembly by removing the plastic film, tearing the tear strip from the remainder of the base member, and separating the packages from the tear strip by breaking the frangible adhesive.
    Type: Grant
    Filed: January 10, 1984
    Date of Patent: March 19, 1985
    Inventor: Michael G. Whiteside
  • Method of forming, filling and hermetically sealing containers
    Patent number: 4495209
    Abstract: A method of forming, filling and hermetically sealing a container in which a thermoplastic lid is hermetically sealed to a paperboard container body while the container body is in an upside down orientation, with the container then being filled through the opposite upper end while the container is still in the upside down orientation, and with the filled container then being closed by means of flaps at the opposite end.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: January 22, 1985
    Inventor: Michael G. Whiteside
  • Vertical gel slab electrophoresis apparatus and method therefor
    Patent number: 4325796
    Abstract: A vertical gel slab electrophoresis apparatus includes a pair of sample units (12, 13) each of which is a pair of clamped together, spaced glass plates (23a, 23b and 24a, 24b) for containing the gel (21, 22). A casting stand is provided which holds the pair of sample units vertical and seals their bottom slots (26, 27) to prevent leakage of the gel. After polymerization, an upper buffer solution container (33) is locked on to the pair of sample units, the casting stand removed, and the remaining U-shaped structure placed in a tank (11) where electrophoresis may be initiated.A specialized seal is provided between the sample units and the upper buffer chamber (33) in the form of a resilient gasket (36, 37) stretched over the one end of a pair of sample plates and this is then wedged into a mated truncated conical sleeve extending from the bottom (34) of the upper buffer container to provide a seal which effectively isolates the upper buffer solution (32) from the lower buffer solution (28).
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: April 20, 1982
    Assignee: Hoefer Scientific Instruments
    Inventors: Peter S. Hoefer, Michael G. Whitesides