Patents by Inventor Clement L. Brungardt

Clement L. Brungardt 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).

  • Non-dispersible vermiculite products
    Patent number: 4885330
    Abstract: Provided is a process for the production of shaped vermiculite articles having excellent resistance to water dispersibility from an aqueous dispersion of vermiculite lamellae having incorporated therein a cationic polyquaternary ammonium salt.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: December 5, 1989
    Assignee: Hercules Incorporated
    Inventors: Clement L. Brungardt, Pamela K. Rush
  • No thermal cure dry film solder mask
    Patent number: 4717643
    Abstract: Disclosed are dry film solder mask compositions containing a binder material that is the reaction product of: (a) a polymerized mixture of polypropyleneglycol monomethacrylate, methacrylic acid and, preferably, specific acrylates and methacrylates; and (b) isocyanatoethyl methacrylate. The masks are equal or superior to current dry film masks in affording protection to circuit boards.
    Type: Grant
    Filed: August 6, 1985
    Date of Patent: January 5, 1988
    Assignee: Hercules Incorporated
    Inventors: Bernard J. Scheve, Clement L. Brungardt