Patents by Inventor Jacques G. Du Chatinier

Jacques G. Du Chatinier 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).

  • Production of thinwalled articles
    Patent number: 4172875
    Abstract: The method of forming thin-walled cupped articles from unpigmented polypropylene sheet by plug-assisted fluid pressure forming of the sheet at a temperature 4.degree. to 15.degree. C. below its melting point is known to produce clear, oriented articles of good impact strength. The low temperature impact strength of these articles can be significantly improved with little or no sacrifice of clarity by making them from sheet produced from a blend of a crystalline propylene polymer with from 1 to 30% of low density polyethylene.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: October 30, 1979
    Assignee: Shell Oil Company
    Inventors: Johan M. Beijen, Jacques G. Du Chatinier