Patents by Inventor Karl J. Kroll

Karl J. Kroll 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).

  • Light selective sport garments
    Patent number: 6350168
    Abstract: A life vest for water sports is taught which is translucent to ultraviolet radiation and visible light. This allows the wearer to achieve uniform tan without having the harsh tan lines where the edges of a life vest would normally be. This allows an individual to enjoy both safety and tanning without having to make a choice between the two.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: February 26, 2002
    Assignee: Kroll Family Trust
    Inventors: Mark W. Kroll, Karl J. Kroll