Inventor

James Tsai

Inventor

Taichung, TW

Overview

44→

Patents

1976–2017

Patent span

Performing operations

Primary field (CPC B)

Patents· 44 as inventor

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

A45Cprimary

A45CPurses22%

B29CShaping or joining of plastics9%

B62BHand-propelled vehicles, e.g. hand carts or perambulators9%

B29LIndexing scheme associated with subclass b29c, relating to particular articles6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

B29DProducing particular articles from plastics or from substances in a plastic state4%

G01NInvestigating or analysing materials by determining their chemical or physical properties4%

LOC124%

LOC144%

A45FTravelling or camp equipment: sacks or packs carried on the body3%

PatentTitleYear

9,741,852'Manufacturing method of semiconductor structure'2017 9,408,449'Stepless retractable handle assembly for luggage'2016 D0602908'Microphone boom for a communications headset'2009 D0587683'Communications headset'2009 D0587684'Communications headset'2009 7,250,878'Decoding device with multi-buffers and decoding method thereof'2007 6,923,466'Collapsible handcart capable of extending the area of carrier by operating handle'2005 6,898,823'Single-tube retractable handle assembly'2005 6,866,290'Apparatus of a collapsible handcart for turning a platform when operating a retractable handle'2005 D0480194'Collapsible handcart'2003 D0479761'Handcart'2003 6,536,078'Retractable handle for a case'2003 6,505,720'Wheeled luggage'2003 6,499,575'Wheeled luggage'2002 6,439,596'Collapsible handcart'2002 6,425,599'Collapsible trolley'2002 6,405,842'Extendable aid standing for a luggage'2002 6,357,567'Luggage'2002 6,357,080'Multi-sections retractable handle'2002 D0448907'Collapsible trolley'2001 6,167,592'Handle having a covering'2001 6,007,414'Polishing machine'1999 5,911,256'Brush having a bristled head capable of being powered by water to swivel'1999 5,909,760'Stepless expandable rod'1999 5,884,362'Expandable handle of luggage'1999 5,806,143'Three-segmented expandable pull rod of luggage'1998 5,692,266'Concealable and expandable handle'1997 5,590,897'Structure of carriage'1997 5,531,300'Retractable handle assembly for a suitcase'1996 D0370406'Safety hook'1996 5,517,735'Safety rope hook'1996 5,515,576'Retractable handle for luggage or hand trucks'1996 D0368013'Extendible handle for wheeled luggage'1996 D0365187'Hand truck'1995 5,464,244'Retractable handle for hand trucks or the like'1995 5,395,558'Method of making a soft ophthalmic lens'1995 5,238,388'Ophthalmic lens mold seal'1993 4,878,038'Circuit protection device'1989 4,822,160'Flashing spectacles'1989 4,598,165'Conformable electromagnetic shield'1986 4,388,261'Method for forming a compartmented puncture sealant package by co-extrusion'1983 4,329,052'Method and apparatus for the measurement of cell size in a foam structure'1982 4,137,754'Melt rheometer for the measurement of flow properties of foamable plastics and polymer compositions'1979 3,953,739'Method and apparatus for the continuous monitoring and control of cell size in a foam structure'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1982Patents assigned to MOBIL OIL CORP (3)· patent assignee history

1976–1979Based in Canandaigua, NY, US· patent location history

1983–1986Based in Fremont, CA, US· patent location history

1986–1989Patents assigned to TSAI JAMES T (2)· patent assignee history

1989–1996Patents assigned to TSAI JAMES (4)· patent assignee history

1993–1995Patents assigned to JOHNSON & JOHNSON VISION PROD (2)· patent assignee history

1993–1995Based in Jacksonville, FL, US· patent location history

1995–2016Based in Taichung, TW· patent location history

2009Patents assigned to PLANTRONICS (3)· patent assignee history

2009Based in San Francisco, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TSAI JAMESself	4	1989–1996
MOBIL OIL CORP	3	1976–1982
PLANTRONICS	3	2009
JOHNSON & JOHNSON VISION PROD	2	1993–1995
TSAI JAMES Tself	2	1986–1989

Locations

Location	Patents	Span
Taichung, TW	30	1995–2016
San Francisco, California, US	3	2009
Jacksonville, Florida, US	2	1993–1995
Fremont, California, US	2	1983–1986
Canandaigua, New York, US	2	1976–1979