Patents by Inventor Darwin Wulff

Darwin Wulff 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).

  • Welder's windguard
    Patent number: 6161590
    Abstract: A portable windguard for use on a pipe to shield a weld being applied from wind comprising a collar, a Velcro.TM. belt for attaching and securing the collar to the pipe and a shield extending generally perpendicularly from the collar. The shield can be collapsible, hence readily transportable from site to site.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: December 19, 2000
    Assignee: 844426 Alberta Ltd.
    Inventor: Darwin Wulff