Patents by Inventor Edward C. Minshew, Jr.

Edward C. Minshew, Jr. 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: 4498510
    Abstract: A device for drawing, holding and dispensing a plurality of distinct, relatively low volume, liquid masses. A plunger plate with an array of plungers is received in a draw tube plate with an array of draw tubes. A piston tip is sealingly disposed in the draw tubes and the plungers are connected thereto. The draw tube plate can be received by a reservoir plate such that the draw tubes extend into an array of wells in the reservoir plate. By finger pressure the plunger plate can be reciprocated with respect to the draw tube plate to move the pistons in the draw tubes for drawing, holding and dispensing a plurality of distinct liquid masses. Preferably the pistons have an inverted concave, conical tip shape and mate with an inner, lower surface of the draw tubes.
    Type: Grant
    Filed: August 20, 1982
    Date of Patent: February 12, 1985
    Inventors: Edward C. Minshew, Jr., Ray F. Chesley