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Inventor

John W. Wu

Inventor
Rancho Palos Verdes, CA, US

Overview

11→
Patents
1987–2012
Patent span
Electricity
Primary field (CPC H)

Patents· 11 as inventor

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

H04Nprimary
H04NPictorial communication, e.g. television58%
G06TImage data processing or generation, in general8%
G06VImage or video recognition or understanding8%
G07DHandling of coins or valuable papers, e.g. testing, sorting by denominations, counting, dispensing, changing or depositing8%
G11CStatic stores8%
H03KPulse technique8%
PatentTitleYear
8,139,873'Binary image data processing system and method'20128,041,143'Methods for background and noise suppression in binary to grayscale image conversion'20118,023,150'Method and system for improved copy quality by generating contone value based on pixel pattern and image context type around pixel of interest'20117,869,093'Method and system for improved copy quality in a multifunction reprographic system'20117,773,254'Method and system for improved copy quality in a multifunction reprographic system'20107,561,747'Image data processing system and method'20096,542,629'Digital imaging method and apparatus for detection of document security marks'20036,317,524'Anti-counterfeit detection method'20016,181,813'Method for counterfeit currency detection using orthogonal line comparison'20016,067,374'Seal detection system and method'20004,658,158'Voltage sense amplifier using NMOS'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2012Patents assigned to XEROX CORP (11)· patent assignee history
1987Based in Torrance, CA, US· patent location history
2000–2012Based in Rancho Palos Verdes, CA, US· patent location history
2012Patents assigned to LEE CHIA-HAO (1)· patent assignee history
2012Patents assigned to NAGARAJAN RAMESH (1)· patent assignee history
2012Patents assigned to RUSSELL JAMES (1)· patent assignee history
2012Patents assigned to TSE FRANCIS KAPO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
XEROX CORP111987–2012
LEE CHIA-HAO12012
NAGARAJAN RAMESH12012
RUSSELL JAMES12012
TSE FRANCIS KAPO12012
Locations
LocationPatentsSpan
Rancho Palos Verdes, California, US102000–2012
Torrance, California, US11987