Patents Assigned to Parker Pen Ltd.
  • Process for preparing a part for color anodization
    Patent number: 4713150
    Abstract: An article of manufacture having a metallic surface consisting of brass or stainless steel is overcoated with a first layer of nickel and a second layer of elemental niobium. The article may thereafter be color anodized in a solution of ammonium sulfate without the need for a hydrofluoric acid etch to produce a highly attractive and colorful ornamental surface finish. After anodization, the articles may be coated with clear epoxy or a sputter deposited transparent ceramic coating for added wear resistance.
    Type: Grant
    Filed: November 8, 1985
    Date of Patent: December 15, 1987
    Assignee: Parker Pen Ltd.
    Inventors: Lloyd Hornbostel, Dale Butrymowicz
  • Double pen desk set
    Patent number: D293590
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: January 5, 1988
    Assignee: Parker Pen Ltd.
    Inventor: Akira Mimaki
  • Single pen desk set
    Patent number: D293591
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: January 5, 1988
    Assignee: Parker Pen Ltd.
    Inventor: Akira Mimaki