Patents by Inventor James L. Sharpe

James L. Sharpe 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).

  • Penetration sensing system with radiation-emitting material
    Patent number: 4398089
    Abstract: A system for protecting sealed or closed packaging means from tampering or nauthorized opening. A source of radiation cannot affect radiation sensors until the packaging means has been penetrated or tampered with. Then the radiation sensors set off a visual alarm, an audible alarm, or otherwise indicate that there has been an unauthorized penetration.
    Type: Grant
    Filed: January 4, 1972
    Date of Patent: August 9, 1983
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: James L. Sharpe