Inventor

Matthew A. Shepherd

Inventor

Vancouver, WA, US

Overview

45→

Patents

1996–2021

Patent span

Performing operations

Primary field (CPC B)

Patents· 45 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B41Jprimary

B41JTypewriters42%

H04NPictorial communication, e.g. television13%

B33YAdditive manufacturing, i.e. manufacturing of three-dimensional [3d] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3d printing, stereolithography or selective laser sintering8%

B29CShaping or joining of plastics7%

G06FElectric digital data processing4%

G06KGraphical data reading4%

C09DCoating compositions, e.g. paints, varnishes or lacquers3%

G06TImage data processing or generation, in general3%

Y10TTechnical subjects covered by former us classification3%

A61GTransport, personal conveyances, or accommodation specially adapted for patients or disabled persons1%

PatentTitleYear

11,110,704Selectively firing a fluid circulation element2021 11,097,488Printer having print assembly2021 11,040,329Density classifiers based on plane regions2021 10,981,331Additive manufacturing2021 10,682,810Three-dimensional (3D) printing2020 10,602,020Dynamic threshold based error diffusion2020 10,596,814Selectively firing a fluid circulation element2020 10,589,464Spreader roller for additive manufacturing2020 10,560,584Density classifiers based on plane regions2020 10,540,747Digital image scaling2020 10,377,160Die alignment with indexing scanbar2019 10,326,911Mitigating dot placement errors for a print job2019 10,086,606Ink modulation for nozzles2018 9,849,671Adjusting the firing times of a number of nozzles2017 9,782,978'Serpentine direction reversal in bidirectional error diffusion halftoning'2017 9,427,991'Controllers to adjust print speed'2016 9,415,585'Dynamic power thresholds for printer device pens'2016 9,358,788'Print head die'2016 9,168,739'Print head die'2015 8,899,717'Print speed determination based on a power budget'2014 8,770,685'Logical and virtual nozzle-fire-restart-line for fluid-ejection device'2014 8,576,450'Replacing a defective colorant'2013 8,480,207'Overlap printing'2013 8,376,506'Drop detection'2013 8,348,373'Firing signal forwarding in a fluid ejection device'2013 8,169,667'Performing halftoning by plurality of halftoning mechanisms'2012 7,920,289'Printing system and method'2011 7,871,142'Systems and methods for controlling ink jet pens'2011 7,286,700'Rendering using at least two levels of gray'2007 7,237,864'Fluid ejection device identification'2007 7,188,943'Ink set for inkjet printing'2007 7,036,919'Print Cartridge'2006 6,953,239'Printer system and printing method'2005 6,952,536'Transmissive optical sensing of leading edges of media sheets advanced substantially adjacent to one another'2005 6,948,790'Non-uniform resolutions for printing'2005 6,948,797'Non-uniform passes per raster'2005 6,789,870'Drop quantity calibration method and system'2004 6,769,757'Robust bit scheme for a memory of a replaceable printer component'2004 6,692,169'Method of propelling an ink jet printer carriage'2004 6,616,260'Robust bit scheme for a memory of a replaceable printer component'2003 6,471,426'Method of propelling an inkjet printer carriage'2002 6,435,641'Media movement apparatus'2002 6,325,559'Single transmission state media handling for ejecting, picking and loading'2001 6,325,483'Techniques for increasing ink-jet pen identification information in an interconnect limited environment'2001 5,482,305'Shifting mechanism and quick release for multispeed wheelchair'1996

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996Based in Seattle, WA, US· patent location history

2001–2002Patents assigned to HEWLETT PACKARD CO (4)· patent assignee history

2001–2021Based in Vancouver, WA, US· patent location history

2003–2021Patents assigned to HEWLETT PACKARD DEVELOPMENT CO (35)· patent assignee history

2005–2014Patents assigned to SHEPHERD MATTHEW A (7)· patent assignee history

2013Patents assigned to KINAS ERICK B (2)· patent assignee history

2016–2017Patents assigned to HEWLETT PACKARD DEVELOPMENT CO LP (4)· patent assignee history

2018Based in Vacouver, WA, US· patent location history

2021Based in Vancouver, CA· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HEWLETT PACKARD DEVELOPMENT CO	35	2003–2021
SHEPHERD MATTHEW Aself	7	2005–2014
HEWLETT PACKARD CO	4	2001–2002
HEWLETT PACKARD DEVELOPMENT CO LP	4	2016–2017
KINAS ERICK B	2	2013

Locations

Location	Patents	Span
Vancouver, Washington, US	42	2001–2021
Vancouver, CA	1	2021
Vacouver, Washington, US	1	2018
Seattle, Washington, US	1	1996