Patents by Inventor Henri D. Chanzy

Henri D. Chanzy 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 substantially linear highly crystalline polyolefins
    Patent number: 5036148
    Abstract: High strength, substantially linear, highly crystalline, high molecular weight-polyolefin shaped structure having a tenacity of greater than 15 g/den and an initial modulus of greater than 500 g/den by drawing never-processed polyolefin at a temperature of 60.degree. C. to 145.degree. C.; and processes for making never-processed polyolefin and such shaped structures.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: July 30, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Henri D. Chanzy, Bruno Rotzinger, Paul Smith
  • Process for the preparation of a shapeable solution of cellulose in the presence of a tertiary amine oxide and an additive
    Patent number: 4880469
    Abstract: The invention relates to solutions of cellulose destined to be extruded or spun, containing a tertiary amine oxide as solvent for the cellulose and in particular the N-oxide of N-methylmorpholine. It consists of using ammonium chloride or calcium chloride as additive in the preparation of these solutions.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: November 14, 1989
    Assignees: Institut Textile de France, Centre de Recherche Scientifique
    Inventors: Henri D. Chanzy, Michel Paillet
  • High strength polyolefins
    Patent number: 4769433
    Abstract: High strength, substantially linear, highly crystalline, high molecular weight-polyolefin shaped structure having a tenacity of greater than 15 g/den and an initial modulus of greater than 500 g/den by drawing never-processed polyolefin at a temperature of 60.degree. C. to 145.degree. C.; and processes for making never-processed polyolefin and such shaped structures.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: September 6, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Henri D. Chanzy, Bruno Rotzinger, Paul Smith