Patents by Inventor Larry Langmeier

Larry Langmeier 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).

  • Fluid filter apparatus and methods
    Patent number: 8617404
    Abstract: Particular aspects of the inventive technology may, in embodiments, relate to a fluid filter apparatus that includes a filtered fluid conduit that has a length that is at least three times a characteristic diameter; and a plurality of holes, wherein at least one of said holes has a first shape and engages an end cap during fluid filter operation, and wherein at least one other of said holes has said first shape and passes filtered fluid from outside of said filtered fluid conduit to a conduit interior during fluid filter operation.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: December 31, 2013
    Assignee: Harvard Corporation
    Inventors: Otto Knottnerus, Larry Langmeier, Mark Berger
  • Fluid Filter Apparatus and Methods
    Publication number: 20110203697
    Abstract: Particular aspects of the inventive technology may, in embodiments, relate to a fluid filter apparatus that includes a filtered fluid conduit that has a length that is at least three times a characteristic diameter; and a plurality of holes, wherein at least one of said holes has a first shape and engages an end cap during fluid filter operation, and wherein at least one other of said holes has said first shape and passes filtered fluid from outside of said filtered fluid conduit to a conduit interior during fluid filter operation.
    Type: Application
    Filed: May 3, 2011
    Publication date: August 25, 2011
    Applicant: HARVARD CORPORATION
    Inventors: Otto Knottnerus, Larry Langmeier, Mark Berger
  • Fluid filter apparatus and methods
    Patent number: 7938971
    Abstract: Particular aspects of the inventive technology may, in embodiments, relate to a fluid filter apparatus that includes a filtered fluid conduit that has a length that is at least three times a characteristic diameter; and a plurality of holes, wherein at least one of said holes has a first shape and engages an end cap during fluid filter operation, and wherein at least one other of said holes has said first shape and passes filtered fluid from outside of said filtered fluid conduit to a conduit interior during fluid filter operation.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: May 10, 2011
    Assignee: Harvard Corporation
    Inventors: Otto Knottnerus, Larry Langmeier, Mark Berger
  • Fluid Filter Apparatus and Methods
    Publication number: 20090107926
    Abstract: Particular aspects of the inventive technology may, in embodiments, relate to a fluid filter apparatus that includes a filtered fluid conduit that has a length that is at least three times a characteristic diameter; and a plurality of holes, wherein at least one of said holes has a first shape and engages an end cap during fluid filter operation, and wherein at least one other of said holes has said first shape and passes filtered fluid from outside of said filtered fluid conduit to a conduit interior during fluid filter operation.
    Type: Application
    Filed: October 30, 2007
    Publication date: April 30, 2009
    Applicant: HARVARD CORPORATION
    Inventors: Otto Knottnerus, Larry Langmeier, Mark Berger