Patents by Inventor Dietmar Poll

Dietmar Poll 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).

  • Process for measuring the variations in volume of fluids, especially shrinkage measurements in synthetic resins during hardening and a device for carrying out the process
    Patent number: 4837776
    Abstract: In a process for measuring the variations in volume, especially shrinkage measurements in duroplastics during the hardening, the material to be measured is acted upon by such a pressure that a fully homogeneous test piece is obtained without any fractures or blisters. Simultaneously and independently from one another, the impinging pressure, the pressure exerted through the test piece on the floor, the temperature in the test piece and in its environs and the volume of the test piece are measured under non-isothermal conditions and fed into a digital unit.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: June 6, 1989
    Assignee: Ciba-Geigy Corporation
    Inventor: Dietmar Poll