Inventor · disambiguated record
Chun Yuen To
Also filed as: TO CHUN ON · TO CHUN Y · TO CHUN YUEN
76 granted patents·36 pending applications·1,189 citations·filing 1994–2022
99Inventor score
Files withWORLD WIDE STATIONERY MFG CO52WORLD WIDE DAILY HOLDINGS CO LTD23TO CHUN YUEN13WORLD WIDE STATIONERY MFG CO LTD10WORLD WIDE STATIONARY MFG CO L3
Top patents by PatentIndex Score
112 records- 0199US6364558B1Ring binder having actuating lever with cushion memberWORLD WIDE STATIONERY MFG CO·Filed 2000·Granted Apr 2, 2002·103 cites·16 claims
- 0298US6758621B2Ring binder mechanismWORLD WIDE STATIONERY MFG CO·Filed 2001·Granted Jul 6, 2004·76 cites·16 claims
- 0398US6474897B1Ring binder having actuating lever with cushion memberWORLD WIDE STATIONERY MFG CO·Filed 2000·Granted Nov 5, 2002·72 cites·20 claims
- 0498US6467984B1Ring binder having actuating lever with cushion memberWORLD WIDE STATIONERY MFG CO·Filed 2000·Granted Oct 22, 2002·84 cites·20 claims
- 0597US6533486B1Ring binder having actuating lever with cushion memberWORLD WIDE STATIONARY MFG CO L·Filed 2000·Granted Mar 18, 2003·75 cites·20 claims
- 0697US5577852ARing binder mechanismWORLD WIDE STATIONERY MFG CO·Filed 1994·Granted Nov 26, 1996·90 cites·6 claims
- 0796US7726897B2Ring binder mechanismWORLD WIDE STATIONERY MFG CO·Filed 2007·Granted Jun 1, 2010·25 cites·21 claims
- 0894US6328497B1Ring mechanism for a binder having a plastic top sectionWORLD WIDE STATIONERY MFG CO·Filed 2001·Granted Dec 11, 2001·38 cites·8 claims
- 0994US5924811AAssembling and disassembling device for ring bindersWORLD WIDE STATIONERY MFG CO·Filed 1997·Granted Jul 20, 1999·87 cites·28 claims
- 1089US7637682B2Ring binderWORLD WIDE STATIONERY MFG CO·Filed 2008·Granted Dec 29, 2009·8 cites·28 claims
- 1189US5842807ARing binderWORLD WIDE STATIONERY MFG CO·Filed 1996·Granted Dec 1, 1998·47 cites·17 claims
- 1287US10932557B2Dental cleaning tool with handle shieldWORLD WIDE DAILY HOLDINGS CO LTD·Filed 2018·Granted Mar 2, 2021·4 cites·20 claims
- 1387US7360962B2Ring binder mechanismWORLD WIDE STATIONERY MFG CO·Filed 2003·Granted Apr 22, 2008·24 cites·7 claims
- 1486US5755513ARing binderWORLD WIDE STATIONERY MFG CO·Filed 1996·Granted May 26, 1998·38 cites·14 claims
- 1585US8047737B2Ring binder mechanismWORLD WIDE STATIONERY MFG CO·Filed 2007·Granted Nov 1, 2011·6 cites·26 claims
- 1685US7819602B2Ring binder mechanismWORLD WIDE STATIONERY MFG CO·Filed 2007·Granted Oct 26, 2010·6 cites·12 claims
- 1784USRE38731ERing binderWORLD WIDE STATIONERY MFG CO·Filed 2000·Granted May 3, 2005·14 cites·30 claims
- 1883US6536980B2Ring binder having actuating lever with cushion memberWORLD WIDE STATIONERY MFG CO·Filed 2001·Granted Mar 25, 2003·19 cites·18 claims
- 1983US5971649ARing binder mechanismWORLD WIDE STATIONERY MFG CO·Filed 1998·Granted Oct 26, 1999·36 cites·11 claims
- 2081US6033144ARing binder mechanismWORLD WIDE STATIONARY MFG CO L·Filed 1998·Granted Mar 7, 2000·34 cites·30 claims
- 2180US6280114B1Ring binder having actuating lever with cushion memberWORLD WIDE STATIONARY MFG CO L·Filed 2000·Granted Aug 28, 2001·16 cites·20 claims
- 2279USD382593SRing binderWORLD WIDE STATIONERY MFG COMPANY LIMITED·Filed 1995·Granted Aug 19, 1997·24 cites·1 claims
- 2378US8147160B2Ring binder mechanism with polymeric housing and actuatorTO CHUN YUEN·Filed 2008·Granted Apr 3, 2012·2 cites·22 claims
- 2476US8573876B2Soft close ring binder mechanism with mating ring tipsCHENG HUNG YU·Filed 2005·Granted Nov 5, 2013·3 cites·18 claims
- 2575US10376346B2Dental cleaning tool with integrated shieldWORLD WIDE DAILY HOLDINGS CO LTD·Filed 2018·Granted Aug 13, 2019·1 cites·20 claims
- 2675US8899864B2Ring binder mechanism having unitary structureTO CHUN YUEN·Filed 2011·Granted Dec 2, 2014·2 cites·19 claims
- 2775US6168339B1Ring binderWORLD WIDE STATIONERY MFG CO·Filed 1998·Granted Jan 2, 2001·24 cites·12 claims
- 2875USD433445SRing binderWORLD WIDE STATIONERY MFG CO LTD·Filed 2000·Granted Nov 7, 2000·20 cites·1 claims
- 2972USD466153SRing binder mechanism fastenerWORLD WIDE STATIONERY MFG CO·Filed 2002·Granted Nov 26, 2002·15 cites·1 claims
- 3071US9656507B2Ring binder mechanism having snap-in ring membersWORLD WIDE STATIONERY MFG CO LTD·Filed 2014·Granted May 23, 2017·1 cites·20 claims
- 3170USD943285SToothbrush headWORLD WIDE DAILY HOLDINGS CO LTD·Filed 2020·Granted Feb 15, 2022·4 cites·1 claims
- 3270USD461498SRing binder mechanism fastenerWORLD WIDE STATIONERY MFG CO·Filed 2001·Granted Aug 13, 2002·14 cites·1 claims
- 3368US8801317B2Ring binder mechanismPI JN BIAO·Filed 2011·Granted Aug 12, 2014·3 cites·19 claims
- 3467US9895922B2Ring binder with interlocking ring membersWORLD WIDE STATIONERY MFG CO LTD·Filed 2016·Granted Feb 20, 2018·1 cites·14 claims
- 3567USD426571SRing binderWORLD WIDE STATIONERY MFG CO LTD·Filed 1998·Granted Jun 13, 2000·13 cites·1 claims
- 3666USD585935SRectilinear binder ringWORLD WIDE STATIONERY MFG CO·Filed 2007·Granted Feb 3, 2009·9 cites·1 claims
- 3766US6007266AFastener for a ring binder and method of producing a binder assemblyWORLD WIDE STATIONERY MFG CO·Filed 1998·Granted Dec 28, 1999·21 cites·34 claims
- 3866US2021204669A1Hand-held hair styling deviceWORLD WIDE DAILY HOLDINGS CO LTD·Filed 2018·Application pending·0 cites
- 3966US2009116896A1Ring Binder Mechanism with Pen HolderWORLD WIDE STATIONERY MFG CO·Filed 2007·Application pending·0 cites
- 4066US2009041531A1Lever-arch type file mechanismTO CHUN YUEN·Filed 2008·Application pending·0 cites
- 4165USD582477SBinding ringWORLD WIDE STATIONERY MFG CO·Filed 2008·Granted Dec 9, 2008·13 cites·1 claims
- 4265US2020245739A1Hand-held hair styling deviceWORLD WIDE DAILY HOLDING COMPANY LTD·Filed 2017·Application pending·0 cites
- 4365US2009072113A1Support stand for structures that hold pages and methods of using the sameWORLD WIDE STATIONERY MFG CO·Filed 2007·Application pending·0 cites
- 4464USD616023SPush button ring mechanism having rectilinear binder ringsWORLD WIDE STATIONERY MFG CO·Filed 2009·Granted May 18, 2010·8 cites·1 claims
- 4564US2008253827A1Lever-arch type file mechanismTO CHUN YUEN·Filed 2007·Application pending·0 cites
- 4664US2008298880A1Page Turning Assist Device with a HolderWORLD WIDE STATIONERY MFG CO·Filed 2007·Application pending·0 cites
- 4763US10118431B2Ring for ring binder mechanismTO CHUN YUEN·Filed 2007·Granted Nov 6, 2018·0 cites·27 claims
- 4863US7950866B2Ring binder mechanism with polymeric housingWORLD WIDE STATIONERY MFG CO·Filed 2007·Granted May 31, 2011·0 cites·25 claims
- 4963USD457559SRing binderWORLD WIDE STATIONERY MFG CO·Filed 2001·Granted May 21, 2002·12 cites·1 claims
- 5063US2022395085A1Device For Attaching And Detaching A Toothbrush Head And Toothbrush KitYU MO MAN·Filed 2022·Application pending·0 cites
Showing the top 50 of 112 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →