HC

Hung Yu Cheng

WC World Wide Stationery Mfg. Co.: 34 patents #2 of 21Top 10%
RT Richtek Technology: 11 patents #40 of 459Top 9%
LL Leco Stationery Manufacturing Company Limited: 1 patents #4 of 5Top 80%
Microsoft: 1 patents #24,826 of 40,388Top 65%
Overall (All Time): #59,561 of 4,157,543Top 2%
47
Patents All Time

Issued Patents All Time

Showing 26–47 of 47 patents

Patent #TitleCo-InventorsDate
7748922 Ring binder mechanism with dual pivot locking elements 2010-07-06
7744300 Ready lock ring binder mechanism Ho Ping Cheng 2010-06-29
7731441 Ring binder mechanism Wing Yiu Ng 2010-06-08
7661898 Soft close ring binder mechanism with reinforced travel bar Wing Yiu Ng 2010-02-16
7654765 Ring binder having a clip 2010-02-02
7600939 Ring binder mechanism with sliding hinge plate Zhong Bin Liu 2009-10-13
7597498 Positive lock ring binder mechanism 2009-10-06
7549817 Ready lock ring binder mechanism Ho Ping Cheng 2009-06-23
7534064 Ring mechanism biased to closed and locked position 2009-05-19
7524128 Ring binder mechanism spring biased to a locked position 2009-04-28
7513708 Ring binder mechanism having slide connector Wing Yiu Ng 2009-04-07
7445396 Hangable ring mechanism 2008-11-04
7404685 Ring binder mechanism spring biased to a locked position when ring members close 2008-07-29
7296946 Ring binder mechanism Ho Ping Cheng 2007-11-20
7275886 Positive lock ring binder mechanism 2007-10-02
7241067 Ring mechanism having blunt ends 2007-07-10
7198422 Flexible strap ring binder Weng Io Ng 2007-04-03
D514621 End treatment for a ring mechanism 2006-02-07
D513765 End treatment for a ring mechanism 2006-01-24
6974273 Ring binder 2005-12-13
6749357 Ring binder mechanism 2004-06-15
6007266 Fastener for a ring binder and method of producing a binder assembly Chun Yuen To, Weng Io Ng 1999-12-28