Patents by Inventor Conrad L. Gaunt

Conrad L. Gaunt 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).

  • Toughening of PVC-separator-enveloped battery plates
    Patent number: 4210998
    Abstract: A sheet of sintered PVC battery separator material is folded around a battery plate along the bottom edge thereof and heat sealed to itself along the lateral edges of the plate to form an envelope around the plate. The fold is then contacted with a plasticizer (i.e., n-methyl-2-pyrolidone) to toughen it against damage such as splitting, cracking, chipping, etc. during subsequent in-plant handling of the plates. Dimethyl and/or diethyl phthalate may be added to the n-methyl-2-pyrolidone to provide toughening for periods up to about five days.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: July 8, 1980
    Assignee: General Motors Corporation
    Inventor: Conrad L. Gaunt