Patents by Inventor Harry Weissenstein

Harry Weissenstein 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: 4990382
    Abstract: A laminated container blow molded from an extruded parison wherein both the parison and the resultant blow molded container are of a multi-layered construction. Most particularly, the parison is provided with a thin outer gloss coat which maintains the clarity and gloss of the resultant container so as to provide the container with a glass-like appearance. In the forming of the parison, the thin gloss coat is extruded with the remainder of the parison and is bonded to the remainder of the parison by an adhesive layer. The thin outer gloss coat is particularly effective when a relatively thick intermediate layer of the parison is formed of reground scrap containers. Usually the relatively thick intermediate layer is formed of a blend of the reground scrap containers and virgin polypropylene.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: February 5, 1991
    Assignee: Continental Plastic Containers, Inc.
    Inventors: Harry Weissenstein, Timothy Heisel
  • Patent number: 4565516
    Abstract: This relates to a blow mold of a large capacity which is particularly configurated to replace two adjacent blow molds in a blow molding machine of the Ferris wheel type. The blow mold includes an inner mold half which will bridge the supports for two existing smaller molds and an outer mold half which is formed in two segments with each of the segments being independently mounted on the supports for two separate prior radially outer blow mold halves. Thus, an existing machine may be readily converted to make much larger blow molded articles then those for which it was originally intended. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of this application.
    Type: Grant
    Filed: March 16, 1984
    Date of Patent: January 21, 1986
    Assignee: Continental Plastic Containers, Inc.
    Inventors: John L. Szajna, Harry Weissenstein