Patents by Inventor Roelof J. Siepel

Roelof J. Siepel 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).

  • Window well cover
    Patent number: 8250815
    Abstract: A window well cover that is universal to the extent that it will work on different sizes and shapes of window wells within a certain range for each size of window well cover produced.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: August 28, 2012
    Assignee: Monarch Materials Group, Inc.
    Inventor: Roelof J. Siepel
  • WINDOW WELL COVER
    Publication number: 20120174499
    Abstract: A window well cover that is universal to the extent that it will work on different sizes and shapes of window wells within a certain range for each size of window well cover produced.
    Type: Application
    Filed: January 12, 2011
    Publication date: July 12, 2012
    Inventor: Roelof J. Siepel
  • Isolator
    Patent number: D674269
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: January 15, 2013
    Assignee: Monarch Materials Group, Inc.
    Inventor: Roelof J. Siepel