Patents by Inventor Marty Lehman

Marty Lehman 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).

  • Dual loop fuel filtration system with controller
    Patent number: 10029193
    Abstract: A filtration system is provided. The system provides a first filtration loop that provides one or more passes through a first filter using a first pump and a second filtration loop that provides one or more passes through a second filter using a second pump. The combination of a first pump and a second pump, each with a filter and each running independently of engine speed, provides an effective means of cleaning fuel.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: July 24, 2018
    Assignee: Caterpillar Inc.
    Inventors: Marty Lehman, Scott F. Shafer
  • DUAL LOOP FUEL FILTRATION SYSTEM WITH CONTROLLER
    Publication number: 20180140975
    Abstract: A filtration system is provided. The system provides a first filtration loop that provides one or more passes through a first filter using a first pump and a second filtration loop that provides one or more passes through a second filter using a second pump. The combination of a first pump and a second pump, each with a filter and each running independently of engine speed, provides an effective means of cleaning fuel.
    Type: Application
    Filed: November 22, 2016
    Publication date: May 24, 2018
    Applicant: Caterpillar Inc.
    Inventors: Marty Lehman, Scott F. Shafer