Patents by Inventor Philip C. Rolffs

Philip C. Rolffs 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).

  • Synthetic rosewood and method of production thereof
    Patent number: 4959076
    Abstract: A process of treating wood of the genus Juglans to change its color completely and throughout its entire structure and substance so as to produce a product with a color consisting of various shades of dark brown with conspicuous black streaks which duplicates the color of natural rosewood, thereby providing a synthetic rosewood or rosewood substitute, and the product produced thereby, are all described herein.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: September 25, 1990
    Inventor: Philip C. Rolffs
  • Synthetic ebony and method of producing the same (II)
    Patent number: 4840638
    Abstract: A process of treating wood of the genus Juglans to change its color completely and throughout its entire structure and substance so as to produce a jet black product which duplicates the color of natural ebony, thereby providing a synthetic ebony or ebony substitute, and the product produced thereby, are all described herein.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: June 20, 1989
    Inventor: Philip C. Rolffs
  • Synthetic ebony and method of producing the same (I)
    Patent number: 4840637
    Abstract: A process of treating wood of the genus Juglans to change its color completely and throughout its entire structure and substance so as to produce a jet black product with bronze highlights which duplicates the color of natural ebony, thereby providing a highlighted synthetic ebony or ebony substitute, and the product produced thereby, are all described herein.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: June 20, 1989
    Inventor: Philip C. Rolffs