Patents by Inventor John Edward Whittle

John Edward Whittle 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 perforated metal foil
    Patent number: 4119514
    Abstract: Continuous lengths of metal foil, such as 4 micron thick nickel foil stored in coils, are perforated by anodic etching through a perforated titanium mask while foil and mask are simultaneously moving together through electrolytic etching bath.
    Type: Grant
    Filed: January 5, 1978
    Date of Patent: October 10, 1978
    Assignee: The International Nickel Company, Inc.
    Inventor: John Edward Whittle
  • Production of perforated metal foil
    Patent number: 4082632
    Abstract: Continuous lengths of metal foil, such as 4 micron thick nickel foil stored in coils, are perforated by anodic etching through a perforated titanium mask while foil and mask are simultaneously moving together through electrolytic etching bath.
    Type: Grant
    Filed: April 21, 1977
    Date of Patent: April 4, 1978
    Assignee: The International Nickel Company, Inc.
    Inventor: John Edward Whittle