Brian J. Keefe

Person

LaJolla, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Modular and tiled optical sensors
- Patent number 11,879,844
- Issue date Jan 23, 2024
- Hewlett-Packard Development Company, L.P.
- Alexander Govyadinov
- G01 - MEASURING TESTING
Information Patent Grant
Inkjet printing method and apparatus
- Patent number 11,186,099
- Issue date Nov 30, 2021
- Hewlett-Packard Development Company, L.P.
- Zhang-Lin Zhou
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Dual regulator print module
- Patent number 10,654,275
- Issue date May 19, 2020
- Hewlett-Packard Development Company, L.P.
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Dual regulator print module
- Patent number 10,507,662
- Issue date Dec 17, 2019
- Hewlett-Packard Development Company, L.P.
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Dual regulator print module
- Patent number 10,179,455
- Issue date Jan 15, 2019
- Hewlett-Packard Development Company, L.P.
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Servicing a printhead of a printer
- Patent number 9,931,847
- Issue date Apr 3, 2018
- Hewlett-Packard Development Company, L.P.
- Jeffrey Allen Wagner
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Dual regulator print module
- Patent number 9,724,926
- Issue date Aug 8, 2017
- Hewlett-Packard Development Company, L.P.
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Ink-jet printhead and method for producing the same
- Patent number 7,048,359
- Issue date May 23, 2006
- Hewlett-Packard Development Company, L.P.
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Substrate for fluid ejection devices
- Patent number 6,997,540
- Issue date Feb 14, 2006
- Hewlett-Packard Development Company, L.P.
- Janis Horvath
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method of forming substrate with fluid passage supports
- Patent number 6,880,246
- Issue date Apr 19, 2005
- Hewlett-Packard Development Company, L.P.
- Janis Horvath
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrical circuit for printhead assembly
- Patent number 6,843,552
- Issue date Jan 18, 2005
- Hewlett-Packard Development Company, L.P.
- David McElfresh
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Substrate for fluid ejection devices
- Patent number 6,705,705
- Issue date Mar 16, 2004
- Hewlett-Packard Development Company, L.P.
- Janis Horvath
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Ink-jet printhead and method for producing the same
- Patent number 6,659,596
- Issue date Dec 9, 2003
- Hewlett-Packard Development Company, L.P.
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Electrical circuit for wide-array inkjet printhead assembly
- Patent number 6,557,976
- Issue date May 6, 2003
- Hewlett-Packard Development Company, L.P.
- David McElfresh
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Inkjet printhead assembly having planarized mounting layer for prin...
- Patent number 6,543,880
- Issue date Apr 8, 2003
- Hewlett-Packard Company
- Mohammad Akhavain
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Carrier for fluid ejection device
- Patent number 6,523,940
- Issue date Feb 25, 2003
- Hewlett-Packard Company
- Joseph E. Scheffelin
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Substrate with fluid passage supports
- Patent number 6,520,624
- Issue date Feb 18, 2003
- Hewlett-Packard Company
- Janis Horvath
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Inkjet printhead assembly with hybrid carrier for printhead dies
- Patent number 6,464,333
- Issue date Oct 15, 2002
- Hewlett-Packard Company
- Joseph E. Scheffelin
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Hybrid carrier for wide-array inkjet printhead assembly
- Patent number 6,431,683
- Issue date Aug 13, 2002
- Hewlett-Packard Company
- May Fong Ho
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Coplanar mounting of printhead dies for wide-array inkjet printhead...
- Patent number 6,409,307
- Issue date Jun 25, 2002
- Hewlett-Packard Company
- Mohammad Akhavain
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Electrical connection for wide-array inkjet printhead assembly with...
- Patent number 6,341,845
- Issue date Jan 29, 2002
- Hewlett-Packard Company
- Joseph E. Scheffelin
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Stable substrate structure for a wide swath nozzle array in a high...
- Patent number 6,332,677
- Issue date Dec 25, 2001
- Hewlett-Packard Company
- Steven W. Steinfield
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Ink-jet printhead and method of producing same
- Patent number 6,328,428
- Issue date Dec 11, 2001
- Hewlett-Packard Company
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Print cartridge coupling and reservoir assembly for use in an inkje...
- Patent number 6,273,560
- Issue date Aug 14, 2001
- Hewlett-Packard Company
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Transition metal carbide films for applications in ink jet printheads
- Patent number 6,209,991
- Issue date Apr 3, 2001
- Hewlett-Packard Company
- Michael J Regan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Fluidic adapter for use with an inkjet print cartridge having an in...
- Patent number 6,188,417
- Issue date Feb 13, 2001
- Hewlett-Packard Company
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Ink delivery system for an inkjet printhead
- Patent number 6,179,414
- Issue date Jan 30, 2001
- Hewlett-Packard Company
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Structure to effect adhesion between substrate and ink barrier in i...
- Patent number 6,155,674
- Issue date Dec 5, 2000
- Hewlett-Packard Company
- Domingo A Figueredo
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Bubble tolerant manifold design for inkjet cartridge
- Patent number 6,003,986
- Issue date Dec 21, 1999
- Hewlett-Packard Co.
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Stable substrate structure for a wide swath nozzle array in a high...
- Patent number 5,984,464
- Issue date Nov 16, 1999
- Hewlett-Packard Company
- Steven W. Steinfield
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
BARRIERS IN MICROFLUIDIC CHANNELS
- Publication number 20230303996
- Publication date Sep 28, 2023
- Hewlett-Packard Development Company, L.P.
- Jacob Shane Sasser
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Application
MODULAR AND TILED OPTICAL SENSORS
- Publication number 20220113255
- Publication date Apr 14, 2022
- Hewlett-Packard Development Company, L.P.
- Alexander Govyadinov
- G01 - MEASURING TESTING
Information Patent Application
FLUID IDENTIFICATION VIA ELECTROCHEMICAL LABELS
- Publication number 20220065815
- Publication date Mar 3, 2022
- Hewlett-Packard Development Company, L.P.
- Tod Woodford
- G01 - MEASURING TESTING
Information Patent Application
ELECTRODE PAIRS ON EITHER SIDE OF MICROFLUIDIC CHANNELS
- Publication number 20220062901
- Publication date Mar 3, 2022
- Hewlett-Packard Development Company, L.P.
- Brian J. Keefe
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
RAPID THERMAL CYCLING
- Publication number 20210322991
- Publication date Oct 21, 2021
- Hewlett-Packard Development Company, L.P.
- Diane HAMMERSTAD
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Application
INKJET PRINTING METHOD AND APPARATUS
- Publication number 20200164661
- Publication date May 28, 2020
- Hewlett-Packard Development Company, L.P.
- Zhang-Lin Zhou
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
INKJET PRINTING METHOD AND APPARATUS
- Publication number 20200140711
- Publication date May 7, 2020
- Zhang-Lin ZHOU
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
DUAL REGULATOR PRINT MODULE
- Publication number 20190111687
- Publication date Apr 18, 2019
- Hewlett-Packard Development Company, L.P.
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
DUAL REGULATOR PRINT MODULE
- Publication number 20190001686
- Publication date Jan 3, 2019
- HEWLETI-PACKARD DEVELOPMENT COMPANY, L.P.
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
DUAL REGULATOR PRINT MODULE
- Publication number 20170313088
- Publication date Nov 2, 2017
- Hewlett-Packard Development Company, L.P.
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
SERVICING A PRINTHEAD OF A PRINTER
- Publication number 20170217189
- Publication date Aug 3, 2017
- Hewlett-Packard Development Company, L.P.
- Jeffrey Allen Wagner
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
DUAL REGULATOR PRINT MODULE
- Publication number 20130169710
- Publication date Jul 4, 2013
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Substrate for fluid ejection devices
- Publication number 20040100522
- Publication date May 27, 2004
- Janis Horvath
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Method of forming substrate with fluid passage supports
- Publication number 20030231229
- Publication date Dec 18, 2003
- Janis Horvath
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Ink-jet printhead and method for producing the same
- Publication number 20030210302
- Publication date Nov 13, 2003
- Brian J. Keefe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Electrical circuit for printhead assembly
- Publication number 20030202047
- Publication date Oct 30, 2003
- David McElfresh
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Substrate for fluid ejection devices
- Publication number 20030007034
- Publication date Jan 9, 2003
- Janis Horvath
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
ELECTRICAL CIRCUIT FOR WIDE-ARRAY INKJET PRINTHEAD ASSEMBLY
- Publication number 20020109751
- Publication date Aug 15, 2002
- David McElfresh
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Electrical connection for wide-array inkjet printhead assembly with...
- Publication number 20020051036
- Publication date May 2, 2002
- Joseph E. Scheffelin
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Brian J. Keefe

Person

Patents Grantslast 30 patents

Modular and tiled optical sensors

Inkjet printing method and apparatus

Dual regulator print module

Dual regulator print module

Dual regulator print module

Servicing a printhead of a printer

Dual regulator print module

Ink-jet printhead and method for producing the same

Substrate for fluid ejection devices

Method of forming substrate with fluid passage supports

Electrical circuit for printhead assembly

Substrate for fluid ejection devices

Ink-jet printhead and method for producing the same

Electrical circuit for wide-array inkjet printhead assembly

Inkjet printhead assembly having planarized mounting layer for prin...

Carrier for fluid ejection device

Substrate with fluid passage supports

Inkjet printhead assembly with hybrid carrier for printhead dies

Hybrid carrier for wide-array inkjet printhead assembly

Coplanar mounting of printhead dies for wide-array inkjet printhead...

Electrical connection for wide-array inkjet printhead assembly with...

Stable substrate structure for a wide swath nozzle array in a high...

Ink-jet printhead and method of producing same

Print cartridge coupling and reservoir assembly for use in an inkje...

Transition metal carbide films for applications in ink jet printheads

Fluidic adapter for use with an inkjet print cartridge having an in...

Ink delivery system for an inkjet printhead

Structure to effect adhesion between substrate and ink barrier in i...

Bubble tolerant manifold design for inkjet cartridge

Stable substrate structure for a wide swath nozzle array in a high...

Patents Applicationslast 30 patents

BARRIERS IN MICROFLUIDIC CHANNELS

MODULAR AND TILED OPTICAL SENSORS

FLUID IDENTIFICATION VIA ELECTROCHEMICAL LABELS

ELECTRODE PAIRS ON EITHER SIDE OF MICROFLUIDIC CHANNELS

RAPID THERMAL CYCLING

INKJET PRINTING METHOD AND APPARATUS

INKJET PRINTING METHOD AND APPARATUS

DUAL REGULATOR PRINT MODULE

DUAL REGULATOR PRINT MODULE

DUAL REGULATOR PRINT MODULE

SERVICING A PRINTHEAD OF A PRINTER

DUAL REGULATOR PRINT MODULE

Substrate for fluid ejection devices

Method of forming substrate with fluid passage supports

Ink-jet printhead and method for producing the same

Electrical circuit for printhead assembly

Substrate for fluid ejection devices

ELECTRICAL CIRCUIT FOR WIDE-ARRAY INKJET PRINTHEAD ASSEMBLY

Electrical connection for wide-array inkjet printhead assembly with...