Inventor

Ronald L. Hansen

Inventor

San Jose, CA, US

Overview

1991–2015

Patent span

Physics

Primary field (CPC G)

Patents· 26 as inventor

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

G09Gprimary

G09GArrangements or circuits for control of indicating devices using static means to present variable information49%

H01JElectric discharge tubes or discharge lamps28%

A61BDiagnosis3%

G02BOptical elements, systems or apparatus3%

G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes3%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light3%

H04JMultiplex communication3%

H04LTransmission of digital information, e.g. telegraphic communication3%

H04NPictorial communication, e.g. television3%

Y02PClimate change mitigation technologies in the production or processing of goods3%

PatentTitleYear

8,952,980'Electronic color and luminance modification'2015 7,403,175'Methods and systems for compensating row-to-row brightness variations of a field emission display'2008 7,158,102'System and method for recalibrating flat panel field emission displays'2007 6,853,135'Apparatus for removing contaminants from a display device'2005 6,822,628'Methods and systems for compensating row-to-row brightness variations of a field emission display'2004 6,771,027'System and method for adjusting field emission display illumination'2004 6,541,912'Auxiliary chamber and display device with improved contaminant removal'2003 6,462,484'Procedures and apparatus for turning-on and turning-off elements within a field emission display device'2002 6,448,949'System and method for improving emitter life in flat panel field emission displays'2002 6,433,473'Row electrode anodization'2002 6,429,836'Circuit and method for display of interlaced and non-interlaced video information on a flat panel display apparatus'2002 6,369,784'System and method for improving emitter life in flat panel field emission displays'2002 6,169,529'Circuit and method for controlling the color balance of a field emission display'2001 6,166,490'Field emission display of uniform brightness independent of column trace-induced signal deterioration'2000 6,147,664'Controlling the brightness of an FED device using PWM on the row side and AM on the column side'2000 6,133,893'System and method for improving emitter life in flat panel field emission displays'2000 6,094,417'Method and system for determining optimized SONET rings'2000 6,069,597'Circuit and method for controlling the brightness of an FED device'2000 6,069,598'Circuit and method for controlling the brightness of an FED device in response to a light sensor'2000 6,037,918'Error compensator circuits used in color balancing with time multiplexed voltage signals for a flat panel display unit'2000 5,940,373'Frame relay network planning tool'1999 5,910,792'Method and apparatus for brightness control in a field emission display'1999 5,898,415'Circuit and method for controlling the color balance of a flat panel display without reducing gray scale resolution'1999 5,831,392'Device for conditioning control signal to electron emitter, preferably so that collected electron current varies linearly with input control voltage'1998 5,615,121'System and method for scheduling service providers to perform customer service requests'1997 5,005,180'Laser catheter system'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2015Based in San Jose, CA, US· patent location history

1997–2000Based in Louisville, CO, US· patent location history

1998–2005Patents assigned to CANDESCENT TECH CORP (14)· patent assignee history

1999–2000Patents assigned to US WEST INC (2)· patent assignee history

2000Patents assigned to CANDESCENT TECHNOLOGIES INC (1)· patent assignee history

2002–2005Patents assigned to CANDESCENT INTELLECTUAL PROP (6)· patent assignee history

2015Patents assigned to BAGHDADI AMIR (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANDESCENT TECH CORP	14	1998–2005
CANDESCENT INTELLECTUAL PROP	6	2002–2005
US WEST INC	2	1999–2000
BAGHDADI AMIR	1	2015
CANDESCENT TECHNOLOGIES INC	1	2000

Locations

Location	Patents	Span
San Jose, California, US	23	1991–2015
Louisville, CO, US	3	1997–2000