Inventor
TSAI CHENG-TAO
TW16 patents
⚠️ This page may combine multiple inventors who share the name “TSAI CHENG-TAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JAEYOU CO LTD
6 patentsUS6508089B1Jan 21, 2003
Lock used for the cabinets in public places
JAEYOU CO LTD64 citations95
US6799446B1Oct 5, 2004
Combination lock changeable in combination
JAEYOU CO LTD47 citations91
US6799445B1Oct 5, 2004
Dual-use lock whose unlocking numeral combination can be traced after having been forgotten
JAEYOU CO LTD56 citations91
US6711922B1Mar 30, 2004
Mechanism of a combination lock for beginning and ending combination-changing operation
JAEYOU CO LTD32 citations91
US6439006B1Aug 27, 2002
Combination lock
JAEYOU CO LTD18 citations83
US7287882B2Oct 30, 2007
Shining lock structure
JAEYOU CO LTD1 citations51