Patents by Inventor Keith Wojcieshowski

Keith Wojcieshowski 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).

  • METHOD AND APPARATUSES FOR SCREENING
    Publication number: 20180141086
    Abstract: A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.
    Type: Application
    Filed: January 17, 2018
    Publication date: May 24, 2018
    Inventors: Keith Wojcieshowski, Christian Newman
  • Method and apparatuses for screening
    Patent number: 9884345
    Abstract: A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: February 6, 2018
    Assignee: Derrick Corporation
    Inventors: Keith Wojcieshowski, Christian Newman
  • METHOD AND APPARATUSES FOR SCREENING
    Publication number: 20160263621
    Abstract: A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.
    Type: Application
    Filed: May 19, 2016
    Publication date: September 15, 2016
    Applicant: DERRICK CORPORATION
    Inventors: Keith Wojcieshowski, Christian Newman