Patents by Inventor Lars G. Larson

Lars G. Larson 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).

  • Patent number: 4462950
    Abstract: A tubular article having a peripheral groove is formed by providing the groove in the wall of a tubular blank made of thermoplastic material such as polyethylene terrephthlate groove by applying simultaneously a pressure against the wall of the blank and axial stretching forces. In the bottom of the groove the material is drawn to yielding and the blank is simultaneously elongated.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: July 31, 1984
    Assignee: PLM AB
    Inventors: Claes T. Nilsson, Kjell M. Jakobsen, Lars G. Larson