HC

Hung Yu Cheng

WC World Wide Stationery Mfg. Co.: 5 patents #1 of 9Top 15%
LL Leco Stationery Manufacturing Company Limited: 1 patents #1 of 1Top 100%
Overall (2011): #11,936 of 364,097Top 4%
6
Patents 2011

Issued Patents 2011

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
8043018 Ring binder mechanism 2011-10-25
8038361 Ready lock ring binder mechanism Ho Ping Cheng 2011-10-18
8006354 Plate clip with open handle 2011-08-30
8002488 Soft close ring binder mechanism 2011-08-23
7891901 Ready lock ring binder mechanism Ho Ping Cheng 2011-02-22
7878729 Intermediate connector for a ring binder mechanism 2011-02-01