Patents by Inventor Harry George Heller

Harry George Heller 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).

  • Method of marking an article
    Patent number: 5916943
    Abstract: Laser marking compositions, articles of manufacture using same and methods of preparing said articles and compositions are disclosed which comprise a polymer including a cyclopentanone compound which is thermally stable at temperatures required to melt process polymers, but which will eliminate water when subjected to an excimer laser to form a visible mark comprising a cyclopentadienone.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: June 29, 1999
    Assignee: BICC Public Limited Company
    Inventors: Harry George Heller, Mark John Vincent