Patents by Inventor Franz Hegemann

Franz Hegemann 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).

  • Joint sealing tape for asphalted areas and joint sealing systems based on the same
    Patent number: 5981061
    Abstract: A joint sealing tape preferably has the following composition in mass %: 35 to 36% of a premix comprising 73 to 75% of a soft grade of bitumen, 18 to 19% rubber and 7 to 8% of comminuted tire rubber; 31 to 32% of a soft ge of bitumen; 19 to 20% ground slate; 11 to 12% cellulose powder; and 2% silicon dioxide.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: November 9, 1999
    Assignee: BITUTEC Bitumen-Technik Service und Vertriebsgesellschaft mbH
    Inventor: Franz Hegemann