Patents by Inventor Jeffrey Wigdahl

Jeffrey Wigdahl 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).

  • Patent number: 10577281
    Abstract: A non-dispersible granular substrate is formed of a plurality of granules, each granule being a mixture including an inert mineral component, a mineral cement, and optionally a light weight additive. The granular substrate could be used, for example, as carriers for pesticides or soil amendments, and as animal bedding (e.g. cat litter). A method of making a non-dispersible granular substrate includes forming a batch mixture including an inert mineral component, a mineral cement, and water, and co-pelletizing the batch mixture to form a plurality of non-dispersible granules.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: March 3, 2020
    Assignee: The National Lime and Stone Company
    Inventors: James Welshimer, Jeffrey Wigdahl
  • Patent number: 10561118
    Abstract: A non-dispersible granular substrate remains solid when exposed to moisture is formed of a plurality of granules, each granule being a mixture including an inert mineral component, a binder formed of a reaction between cane molasses and hydrated lime, and optionally a light weight additive. A method of making a non-granular substrate includes forming a batch mixture including an inert mineral component, hydrated lime, cane molasses, water and optionally a light weight additive, and co-pelletizing the batch mixture to form a plurality of granules. The granular substrate can be used, for example, as animal bedding (e.g. cat litter).
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: February 18, 2020
    Assignee: The National Lime and Stone Company
    Inventors: James Welshimer, Jeffrey Wigdahl, Jonathan Smeltz
  • Publication number: 20050230177
    Abstract: A sliding shield structure is attached to the rod of a steering cylinder and moves with the rod to fully protect the rod at all times and to eliminate interference between the shield and steerable wheel throughout the steering range of the implement. Primarily support of the shield is by the implement axle structure, rollers and slides. The shield and the rod can rotate freely relative to each other to eliminate torque load transmission between the components. A notched plate holds the structure and facilitates easy removal by simply rotating the shield away from the cylinder rod.
    Type: Application
    Filed: April 16, 2004
    Publication date: October 20, 2005
    Inventors: Jeffrey Wigdahl, Bradley Friest