Patents by Inventor Tom Haldorsen

Tom Haldorsen 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).

  • Keying methods and apparatus for inkjet print cartridges and inkjet printers
    Patent number: 6942328
    Abstract: An inkjet printer and inkjet print cartridge are each especially configured for inter-engaging with one another via a plurality of keying features of the cartridge and keying structures of the printer such that loading of a foreign print cartridge into the printer is either not possible or results in the printer being inoperative. Thus, only print cartridges particularly configured and intended to be used in the printer will fit into the printer and enable its operation.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: September 13, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Tom Haldorsen
  • Keying methods and apparatus for inkjet print cartridges and inkjet printers
    Publication number: 20040218025
    Abstract: An inkjet printer and inkjet print cartridge are each especially configured for inter-engaging with one another via a plurality of keying features of the cartridge and keying structures of the printer such that loading of a foreign print cartridge into the printer is either not possible or results in the printer being inoperative. Thus, only print cartridges particularly configured and intended to be used in the printer will fit into the printer and enable its operation.
    Type: Application
    Filed: May 28, 2004
    Publication date: November 4, 2004
    Inventor: Tom Haldorsen
  • Keying methods and apparatus for inkjet print cartridges and inkjet printers
    Patent number: 6749294
    Abstract: An inkjet printer and inkjet print cartridge are each especially configured for inter-engaging with one another via a plurality of keying features of the cartridge and keying structures of the printer such that loading of a foreign print cartridge into the printer is either not possible or results in the printer being inoperative. Thus, only print cartridges particularly configured and intended to be used in the printer will fit into and enable its operation.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: June 15, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Tom Haldorsen
  • KEYING METHODS AND APPARATUS FOR INKJET PRINT CARTRIDGES AND INKJET PRINTERS
    Publication number: 20040070652
    Abstract: An inkjet printer and inkjet print cartridge are each especially configured for inter-engaging with one another via a plurality of keying features of the cartridge and keying structures of the printer such that loading of a foreign print cartridge into the printer is either not possible or results in the printer being inoperative. Thus, only print cartridges particularly configured and intended to be used in the printer will fit into the printer and enable its operation.
    Type: Application
    Filed: October 10, 2002
    Publication date: April 15, 2004
    Inventor: Tom Haldorsen
  • Capillary leak inhibitor for a print cartridge
    Patent number: 6454387
    Abstract: A lid for a print cartridge. The lid includes a barrier configured to seal the ink reservoir of the print cartridge and a stand-off spaced from the barrier. The stand-off is configured to engage ink-permeable foam. The lid may also include an alignment structure coupled with the stand-off and a capillary break adjacent the alignment structure. The capillary break is configured to impede the formation of capillary paths between the ink reservoir and the lid.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: September 24, 2002
    Assignee: Hewlett-Packard Company
    Inventor: Tom Haldorsen
  • Ink jet print cartridge
    Patent number: D457184
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: May 14, 2002
    Assignee: Hewlett-Packard Company
    Inventors: Patrick V Boyd, Tom Haldorsen
  • Ink jet print cartridge
    Patent number: D464371
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: October 15, 2002
    Assignee: Hewlett-Packard Company
    Inventors: Patrick V Boyd, Tom Haldorsen
  • Ink jet print cartridge
    Patent number: D466928
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: December 10, 2002
    Assignee: Hewlett-Packard Company
    Inventors: Patrick V Boyd, Tom Haldorsen