Patents by Inventor Harold O. Buzzell

Harold O. Buzzell 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).

  • Apparatus for preparing a gradient dyed sheet
    Patent number: 4258653
    Abstract: Means orient a web to lie in a vertical plane and feed the web longitudinally through a dye bath in a generally horizontal path and with progressive transverse immersion and emersion. Reciprocating paddle means produce a wave form to the bath surface.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: March 31, 1981
    Assignee: Polaroid Corporation
    Inventor: Harold O. Buzzell
  • Apparatus and method for preparing gradient dyed sheet
    Patent number: 4190418
    Abstract: A process and apparatus for dyeing a web in a continuous manner so as to impart a dye density gradient to the web across its transverse dimension is disclosed.
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: February 26, 1980
    Assignee: Polaroid Corporation
    Inventor: Harold O. Buzzell