Inventor · disambiguated record
Po-Chuan Tsai
Also filed as: TSAI PO-CHUAN
42 granted patents·17 pending applications·729 citations·filing 2002–2023
98Inventor score
Top patents by PatentIndex Score
59 records- 0196US8499413B1Castor braking and stopping rotating simultaneouslyTSAI PO-CHUAN·Filed 2012·Granted Aug 6, 2013·24 cites·5 claims
- 0295US9139044B1Castor braking and stopping rotating simultaneouslyTSAI PO-CHUAN·Filed 2014·Granted Sep 22, 2015·20 cites·7 claims
- 0395US8104838B2Armrest assembly that can adjust its leftward and rightward positionsTSAI PO-CHUAN·Filed 2009·Granted Jan 31, 2012·67 cites·17 claims
- 0495US6948775B2Office chair armrestTSAI PO-CHUAN·Filed 2004·Granted Sep 27, 2005·97 cites·3 claims
- 0593US7387341B1Armrest having position adjusting functionTSAI PO-CHUAN·Filed 2007·Granted Jun 17, 2008·54 cites·20 claims
- 0693US6748623B1Chair casterFiled 2002·Granted Jun 15, 2004·44 cites·3 claims
- 0791US8522397B1Castor that is controlled by a wire to brake and stop rotating simultaneouslyTSAI PO-CHUAN·Filed 2012·Granted Sep 3, 2013·15 cites·18 claims
- 0890US9950563B2Wheel connecting deviceTSAI PO CHUAN·Filed 2017·Granted Apr 24, 2018·6 cites·3 claims
- 0990USD470748SChair casterTSAI PO-CHUAN·Filed 2002·Granted Feb 25, 2003·40 cites·1 claims
- 1089US7896440B2Chair armrest having a height adjustable functionTSAI PO-CHUAN·Filed 2008·Granted Mar 1, 2011·36 cites·14 claims
- 1187US7516512B2Castor having efficiently locking functionTSAI PO-CHUAN·Filed 2006·Granted Apr 14, 2009·14 cites·15 claims
- 1286US8128172B2Chair armrest assembly having adjustable heightTSAI PO-CHUAN·Filed 2010·Granted Mar 6, 2012·17 cites·20 claims
- 1385US7930802B2Castor that is braked solidly and stably without producing vibrationTSAI PO-CHUAN·Filed 2008·Granted Apr 26, 2011·12 cites·16 claims
- 1483US8297563B2Lifting device for chair including force distributing pressing and locking sleevesTSAI PO-CHUAN·Filed 2010·Granted Oct 30, 2012·13 cites·18 claims
- 1583US7725986B2Castor that is operated smoothly and convenientlyTSAI PO-CHUAN·Filed 2007·Granted Jun 1, 2010·11 cites·19 claims
- 1683USD606345SChair armrestTSAI PO-CHUAN·Filed 2009·Granted Dec 22, 2009·28 cites·1 claims
- 1782US10759221B1Caster deviceTSAI PO CHUAN·Filed 2019·Granted Sep 1, 2020·3 cites·8 claims
- 1881US7559609B2Multifunctional armrest assembly for chairTSAI PO-CHUAN·Filed 2006·Granted Jul 14, 2009·20 cites·18 claims
- 1981US7367628B1Armrest that will not produce noise during adjustmentTSAI PO-CHUAN·Filed 2007·Granted May 6, 2008·20 cites·20 claims
- 2080US7937805B2Castor that is braked solidly and stably without producing vibrationTSAI PO-CHUAN·Filed 2008·Granted May 10, 2011·9 cites·11 claims
- 2179US10913312B1Caster assemblyTSAI PO CHUAN·Filed 2019·Granted Feb 9, 2021·2 cites·7 claims
- 2279US9211762B1Castor with two braking functionsTSAI PO-CHUAN·Filed 2015·Granted Dec 15, 2015·3 cites·5 claims
- 2379US7011371B1Armrest assembly having a height adjustable functionTSAI PO-CHUAN·Filed 2004·Granted Mar 14, 2006·34 cites·17 claims
- 2478US7661763B2Chair armrest having a height adjustable functionTSAI PO-CHUAN·Filed 2008·Granted Feb 16, 2010·18 cites·15 claims
- 2575US7448687B2Internally pulling type lift device for chair armrestTSAI PO-CHUAN·Filed 2007·Granted Nov 11, 2008·15 cites·16 claims
- 2674US8128171B2Chair armrest assembly having adjustable heightTSAI PO-CHUAN·Filed 2010·Granted Mar 6, 2012·8 cites·18 claims
- 2772US8991007B2Double brake structure for caster wheelTSAI PO-CHUAN·Filed 2013·Granted Mar 31, 2015·4 cites·2 claims
- 2870USD524582SOffice chair baseTSAI PO-CHUAN·Filed 2003·Granted Jul 11, 2006·16 cites·1 claims
- 2970USD482549SOffice chair baseFiled 2003·Granted Nov 25, 2003·16 cites·1 claims
- 3068US8407854B2Protective device for castorTSAI PO-CHUAN·Filed 2010·Granted Apr 2, 2013·3 cites·12 claims
- 3167US9326607B2Rotatable armrestTSAI PO-CHUAN·Filed 2014·Granted May 3, 2016·4 cites·3 claims
- 3267US7611206B2Internally pulling type lift device for chair armrestTSAI PO-CHUAN·Filed 2007·Granted Nov 3, 2009·8 cites·18 claims
- 3366US8128309B2Lifting device for the backrest of a chairTSAI PO-CHUAN·Filed 2009·Granted Mar 6, 2012·7 cites·16 claims
- 3459USD668944SChair castorTSAI PO-CHUAN·Filed 2011·Granted Oct 16, 2012·10 cites·1 claims
- 3559USD475871SChair baseFiled 2002·Granted Jun 17, 2003·10 cites·1 claims
- 3657US2011138571A1Castor that can be Detached and Cleaned Easily and QuicklyTSAI PO-CHUAN·Filed 2009·Application pending·0 cites
- 3757US2011146027A1Castor Assembly Having Adjustable HeightTSAI PO-CHUAN·Filed 2009·Application pending·0 cites
- 3855US12083824B2Caster with a breaking unitJENP JOU ENTPR CO LTD·Filed 2023·Granted Sep 10, 2024·0 cites·6 claims
- 3955US11942418B2Semiconductor structure and method for making the sameTAIWAN SEMICONDUCTOR MFG CO LTD·Filed 2021·Granted Mar 26, 2024·0 cites·20 claims
- 4054USD586161SChair armrestTSAI PO-CHUAN·Filed 2008·Granted Feb 10, 2009·8 cites·1 claims
- 4154US2011062763A1Adjustable Armrest Support Assembly for ChairTSAI PO-CHUAN·Filed 2009·Application pending·0 cites
- 4250US2011006672A1Flat light source and manufacturing method thereofKIM SUNG-O·Filed 2009·Application pending·0 cites
- 4349USD653480SLeg swivel of a swivel chairTSAI PO-CHUAN·Filed 2010·Granted Feb 7, 2012·6 cites·1 claims
- 4449US2016082770A1Wheel StructureTSAI PO-CHUAN·Filed 2014·Application pending·0 cites
- 4549US2007284932A1Castor axle having noise suppression functionTSAI PO-CHUAN·Filed 2006·Application pending·0 cites
- 4648US2015360512A1Riveting Structure of Caster WheelTSAI PO-CHUAN·Filed 2014·Application pending·0 cites
- 4747US2015040346A1Caster Wheel StructureTSAI PO-CHUAN·Filed 2013·Application pending·0 cites
- 4846USD668943SChair castorTSAI PO-CHUAN·Filed 2011·Granted Oct 16, 2012·5 cites·1 claims
- 4946US2014250628A1Castor for LuggageTSAI PO-CHUAN·Filed 2013·Application pending·0 cites
- 5046US2005115021A1Office chair casterFiled 2003·Application pending·0 cites
Showing the top 50 of 59 patent records by PatentIndex Score.
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