Patents by Inventor John A. Pignato, Jr.

John A. Pignato, 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).

  • Condensation heating apparatus
    Patent number: 5030805
    Abstract: A condensation heating apparatus particularly useful for curing abrasion resistant coatings on eyeglass lenses has an open topped chamber with a baffle assembly for reducing the loss of vapor through the open top. The baffle assembly includes a fixed vertical partition and a removable, L-shaped baffle that has a horizontal portion to cover part of the chamber and a vertical portion which also serves as a partition. The baffle assembly extends only partially into the chamber and terminates above the top of the vapor zone so that the assembly does not become hot to the touch.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: July 9, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Timothy A. Koenig, John A. Pignato, Jr., Mark W. Grenfell