Inventor · disambiguated record
Hsien-Chang Tseng
Also filed as: TSENG HSIEN-CHANG · TSENG HSIEN-CHANG RICHARD
40 granted patents·143 citations·filing 1993–2022
97Inventor score
Top patents by PatentIndex Score
40 records- 0198US8763545B2Method and device for controlling sewing patterns of a sewing machineTSENG HSIEN-CHANG·Filed 2011·Granted Jul 1, 2014·30 cites·26 claims
- 0284US8042086B2Method and apparatus for verifying integrated circuit design using a constrained random test benchORACLE AMERICA INC·Filed 2007·Granted Oct 18, 2011·14 cites·17 claims
- 0381US10801142B2Positioning structure for an eccentrically movable tongue seatTSENG HSIEN CHANG·Filed 2017·Granted Oct 13, 2020·2 cites·6 claims
- 0473US10801144B2Hollow pipe joint structure for a sewing machineTSENG HSIEN CHANG·Filed 2018·Granted Oct 13, 2020·1 cites·5 claims
- 0570US9506174B2Differential feeding mechanism for a sewing machineTSENG HSIEN-CHANG·Filed 2014·Granted Nov 29, 2016·2 cites·9 claims
- 0667US8297212B2Travel beginning/end adjusting positioning structure for a sewing machine motor drive mechanismTSENG HSIEN-CHANG·Filed 2011·Granted Oct 30, 2012·2 cites·8 claims
- 0766US5664509ALooper driving assembly for a sewing machineFiled 1996·Granted Sep 9, 1997·10 cites·5 claims
- 0865US7647877B2Thread take-up lever for a sewing machineTSENG HSIEN-CHANG·Filed 2008·Granted Jan 19, 2010·3 cites·8 claims
- 0964US5503094ANeedle plate with movable tongues for sewing machineFiled 1995·Granted Apr 2, 1996·9 cites·7 claims
- 1063US5960725ARotary needle driving mechanism for a sewing machineFiled 1998·Granted Oct 5, 1999·9 cites·2 claims
- 1162US8893632B1Thread hooking device for a hemming device of a sewing machineTSENG HSIEN-CHANG·Filed 2013·Granted Nov 25, 2014·1 cites·9 claims
- 1262US8701577B2Sewing machine with an adjusting structure capable of controlling a swing center of a swing armTSENG HSIEN-CHANG·Filed 2011·Granted Apr 22, 2014·1 cites·14 claims
- 1362US8651037B1Drive structure for driving an upper thread wiper of a sewing machineTSENG HSIEN-CHANG·Filed 2012·Granted Feb 18, 2014·1 cites·20 claims
- 1461US11859324B2Driving clutch device for a sewing machineTSENG HSIEN CHANG·Filed 2022·Granted Jan 2, 2024·0 cites·9 claims
- 1561US10767293B1Sewing-thread pre-stress device for a sewing machineTSENG HSIEN CHANG·Filed 2019·Granted Sep 8, 2020·0 cites·14 claims
- 1659US7617786B1Pressure adjustment structure for a presser foot of a sewing machineTSENG HSIEN-CHANG·Filed 2008·Granted Nov 17, 2009·2 cites·8 claims
- 1759US6079342ANeedle support for sewing machineFiled 1999·Granted Jun 27, 2000·7 cites·10 claims
- 1858US10260186B2Cutting device for a sewing machineTSENG HSIEN CHANG·Filed 2015·Granted Apr 16, 2019·0 cites·5 claims
- 1955US8979375B2Universal bearingTSENG HSIEN-CHANG·Filed 2014·Granted Mar 17, 2015·0 cites·6 claims
- 2054US11414799B2Feed-dog stabilizing mechanism for a sewing machineTSENG HSIEN CHANG·Filed 2018·Granted Aug 16, 2022·0 cites·9 claims
- 2154US11008687B2Positioning device for an ally movable tongue seatTSENG HSIEN CHANG·Filed 2019·Granted May 18, 2021·0 cites·18 claims
- 2254US5704302ALooper device having a thread feeding mechanismFiled 1996·Granted Jan 6, 1998·6 cites·3 claims
- 2353US9382650B2Cutting device for a sewing machineTSENG HSIEN-CHANG·Filed 2013·Granted Jul 5, 2016·0 cites·4 claims
- 2453USD719985SSewing machineTSENG HSIEN-CHANG·Filed 2013·Granted Dec 23, 2014·7 cites·1 claims
- 2551US8151721B2Thread tensioning device for a sewing machineTSENG HSIEN-CHANG·Filed 2009·Granted Apr 10, 2012·1 cites·17 claims
- 2651US5573192AThread tensioning device for a sewing machineFiled 1995·Granted Nov 12, 1996·5 cites·1 claims
- 2750US5860376AThread tension device for sewing machineFiled 1997·Granted Jan 19, 1999·5 cites·16 claims
- 2850US5343821ASewing machine having an accessory boxTSENG HSIEN CHANG·Filed 1993·Granted Sep 6, 1994·5 cites·2 claims
- 2948US10801143B2Knee operated lifting mechanism for a presser foot of a sewing machineTSENG HSIEN CHANG·Filed 2017·Granted Oct 13, 2020·0 cites·20 claims
- 3046US9540751B2Sewing machine with a threading and air supply selecting deviceTSENG HSIEN-CHANG·Filed 2014·Granted Jan 10, 2017·0 cites·18 claims
- 3146US9200394B2Guiding structure for a cloth feeding mechanismTSENG HSIEN-CHANG·Filed 2011·Granted Dec 1, 2015·0 cites·3 claims
- 3245US9016219B2Tension release device for compensating mechanical error of a tension device for a sewing machineTSENG HSIEN-CHANG·Filed 2013·Granted Apr 28, 2015·0 cites·10 claims
- 3344US9150992B2Sewing machine with a drive-selection device capable of positioning an upper thread wiper when in a non-drive positionTSENG HSIEN-CHANG·Filed 2014·Granted Oct 6, 2015·0 cites·5 claims
- 3444US7513201B2Needle holder of multiple needles for sewing machineTSENG HSIEN-CHANG·Filed 2007·Granted Apr 7, 2009·0 cites·8 claims
- 3544USD377357SOverlock sewing machineTSENG HSIEN-CHANG·Filed 1995·Granted Jan 14, 1997·5 cites·1 claims
- 3643US5704303ASewing machine control mechanismFiled 1997·Granted Jan 6, 1998·3 cites·9 claims
- 3742US5651287AShaft coupling mechanism for a sewing machineFiled 1996·Granted Jul 29, 1997·3 cites·2 claims
- 3842US5533460AThread tension device with latch for a sewing machineFiled 1995·Granted Jul 9, 1996·3 cites·8 claims
- 3942US5289790ASewing machine presser foot having means or positioning spring elementTSENG HSIEN CHANG·Filed 1993·Granted Mar 1, 1994·3 cites·5 claims
- 4040USD358597SOverlock sewing machineTSENG HSIEN-CHANG·Filed 1993·Granted May 23, 1995·3 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →