Patents by Inventor Sheldon J. Israel

Sheldon J. Israel 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).

  • Multilayer polyester film
    Patent number: 6203921
    Abstract: A multilayer polyester film having at least 7 layers which comprises alternating layers of polyethylene terephthalate and polyethylene naphthalate. Biaxial orientation and subsequent restrained heat setting of these materials results in thin films with tensile moduli in both stretch directions well in excess of the values obtained with monolithic films of either material. In some embodiments, a slippery surface is imparted to the film without the use of conventional slip agents.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: March 20, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Brandt K. Carter, Raymond L. Lucking, James A. Klein, Sheldon J. Israel
  • Multilayer polyester film
    Patent number: 5968666
    Abstract: A multilayer polyester film, and a method for making the same, is provided. The film consists of alternating layers of polyethylene terephthalate and polyethylene naphthalate. Biaxial orientation and subsequent restrained heat setting of these materials results in thin films with tensile moduli in both stretch directions well in excess of the values obtained with monolithic films of either material. In some embodiments, a slippery surface is imparted to the film without the use of conventional slip agents.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: October 19, 1999
    Assignee: 3M Innovative Properties Company
    Inventors: Brandt K. Carter, Raymond L. Lucking, James A. Klein, Sheldon J. Israel
  • Method for making a multilayer polyester film having a low coefficient of friction
    Patent number: 5795528
    Abstract: A method for making multilayer polyester films is provided wherein a slippery surface is imparted to the film, without the use of slip agents, through appropriate crystallization and orientation of the film.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: August 18, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James A. Klein, Brandt K. Carter, Sheldon J. Israel, Raymond L. Lucking
  • Multilayer polyester film with a low coefficient of friction
    Patent number: 5783283
    Abstract: A multilayer film is provided with a slippery surface layer by crystallization in an underlying layer which results in the deformation of an overlying surface layer without the use of particulate slip agents. The films may be formed by alternating layers of a naphthalene dicarboxylic acid polyester and a terephthalic acid polyester.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: July 21, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James A. Klein, Brandt K. Carter, Sheldon J. Israel, Raymond L. Lucking
  • Method for making multilayer polyester film
    Patent number: 5759467
    Abstract: A multilayer polyester film, and a method for making the same, is provided. The film consists of alternating layers of polyethylene terephthalate and polyethylene naphthalate. Biaxial orientation and subsequent restrained heat setting of these materials results in thin films with tensile moduli in both stretch directions well in excess of the values obtained with monolithic films of either material. In some embodiments, a slippery surface is imparted to the film without the use of conventional slip agents.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: June 2, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Brandt K. Carter, Raymond L. Lucking, James A. Klein, Sheldon J. Israel