Inventor

David Li

Inventor

West Roxbury, MA, US

Overview

22→

Patents

1998–2020

Patent span

Physics

Primary field (CPC G)

Patents· 22 as inventor

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

G06Tprimary

G06TImage data processing or generation, in general33%

G02BOptical elements, systems or apparatus11%

G06KGraphical data reading11%

G06VImage or video recognition or understanding11%

H04NPictorial communication, e.g. television8%

G06FElectric digital data processing6%

B07CPostal sorting3%

B25JManipulators3%

G01BMeasuring length, thickness or similar linear dimensions3%

G01CMeasuring distances, levels or bearings3%

PatentTitleYear

10,753,726System and method for 3D profile determination using model-based peak selection2020 10,477,154System and method for aligning two work pieces with a vision system in the presence of occlusion2019 10,152,780System and method for finding lines in an image with a vision system2018 10,032,273Machine vision system calibration using inaccurate calibration targets2018 9,734,419'System and method for validating camera calibration in a vision system'2017 9,569,850'System and method for automatically determining pose of a shape'2017 8,733,656'Code and part associating method and apparatus'2014 8,442,304'System and method for three-dimensional alignment of objects using machine vision'2013 7,010,228'Optical add-drop multiplexer'2006 6,714,670'Methods and apparatuses to determine the state of elements'2004 6,633,701'Method of manufacturing a core collimating assembly for DWDM devices'2003 6,577,775'Methods and apparatuses for normalizing the intensity of an image'2003 6,526,196'Optical switch using rotatable reflector'2003 6,289,117'Analysis of an image of a pattern of discrete objects'2001 6,141,009'Interface for model definition'2000 6,130,959'Analyzing an image of an arrangement of discrete objects'2000 6,118,893'Analysis of an image of a pattern of discrete objects'2000 6,115,042'Interface for model definition'2000 6,067,376'Classifying pixels of an image'2000 6,055,328'Analyzing an acquired arrangement of object locations'2000 5,963,686'Low cost, easy to build precision wavelength locker'1999 5,742,037'Method and apparatus for high speed identification of objects having an identifying feature'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2020Patents assigned to COGNEX CORP (18)· patent assignee history

1998–2020Based in West Roxbury, MA, US· patent location history

1999Based in Mountain View, CA, US· patent location history

2003–2006Based in Sunnyvale, CA, US· patent location history

2013–2017Patents assigned to LI DAVID Y (2)· patent assignee history

2013–2017Patents assigned to MARRION CYRIL C (2)· patent assignee history

2013–2017Patents assigned to SHIVARAM GURUPRASAD (2)· patent assignee history

2013–2017Patents assigned to WALLACK AARON S (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
COGNEX CORP	18	1998–2020
LI DAVID Yself	2	2013–2017
MARRION CYRIL C	2	2013–2017
SHIVARAM GURUPRASAD	2	2013–2017
WALLACK AARON S	2	2013–2017

Locations

Location	Patents	Span
West Roxbury, Massachusetts, US	18	1998–2020
Sunnyvale, California, US	3	2003–2006
Mountain View, California, US	1	1999