Patents by Inventor Rodney Allen Parker

Rodney Allen Parker 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 density filter cartridge
    Patent number: 7060181
    Abstract: The invention relates to aquarium filters providing improved water filtration without accelerated clogging. The present invention also relates to methods of using such filters.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: June 13, 2006
    Assignee: Tetra Holding (US), Inc.
    Inventors: John Edward Fox, Rodney Allen Parker
  • Dual density filter cartridge
    Publication number: 20040238426
    Abstract: The invention relates to aquarium filters providing improved water filtration without accelerated clogging. The present invention also relates to methods of using such filters.
    Type: Application
    Filed: February 10, 2004
    Publication date: December 2, 2004
    Applicant: Tetra Holding (US), Inc.
    Inventors: John Edward Fox, Rodney Allen Parker
  • Dual density filter cartridge
    Publication number: 20040159598
    Abstract: The invention relates to aquarium filters providing improved water filtration without accelerated clogging. The present invention also relates to methods of using such filters.
    Type: Application
    Filed: February 9, 2004
    Publication date: August 19, 2004
    Applicant: Tetra Holding (US), Inc.
    Inventors: John Edward Fox, Rodney Allen Parker
  • Dual density filter cartridge
    Patent number: 6692637
    Abstract: The invention relates to aquarium filters providing improved water filtration without accelerated clogging. The present invention also relates to methods of using such filters.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: February 17, 2004
    Assignee: Tetra Holding (US), Inc.
    Inventors: John Edward Fox, Rodney Allen Parker
  • Dual density filter cartridge
    Publication number: 20030085167
    Abstract: The invention relates to aquarium filters providing improved water filtration without accelerated clogging. The present invention also relates to methods of using such filters.
    Type: Application
    Filed: November 7, 2001
    Publication date: May 8, 2003
    Inventors: John Edward Fox, Rodney Allen Parker