Patents by Inventor Berend H. Zylstra

Berend H. Zylstra 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).

  • Pillow
    Patent number: D367390
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: February 27, 1996
    Assignee: Woodbridge Foam Corporation
    Inventors: Herbert K. Johnston, Deborah A. Kennedy, Berend H. Zylstra, Steven D. Canning
  • Pillow
    Patent number: D367391
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: February 27, 1996
    Assignee: Woodbridge Foam Corporation
    Inventors: Herbert K. Johnston, Deborah A. Kennedy, Berend H. Zylstra, Steven D. Canning
  • Pillow
    Patent number: D368615
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: April 9, 1996
    Assignee: Woodbridge Foam Corporation
    Inventors: Herbert K. Johnston, Deborah A. Kennedy, Berend H. Zylstra, Steven D. Canning