Inventor
HIRANO KEI
JP13 patents
⚠️ This page may combine multiple inventors who share the name “HIRANO KEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO INSTR INC
10 patentsUS7609588B2Oct 27, 2009
Multifunctional clock capable of realizing plurality of movement layouts
SEIKO INSTR INC8 citations83
US7215602B2May 8, 2007
Multifunction timepiece capable of constituting plural fan shape moving hand train wheel layouts
SEIKO INSTR INC13 citations83
US6965544B2Nov 15, 2005
Electronic timepiece
SEIKO INSTR INC7 citations71
US7443768B2Oct 28, 2008
Multifunctional timepiece including plural types of hand operating train wheels
SEIKO INSTR INC6 citations62
US7275860B2Oct 2, 2007
Display correcting mechanism and timepiece having display correcting mechanism
SEIKO INSTR INC6 citations62
US7269102B2Sep 11, 2007
Multifunction timepiece having fan shape moving hand train wheel and fan shape moving hand train wheel apparatus
SEIKO INSTR INC2 citations62
US7269101B2Sep 11, 2007
Multifunction timepiece having fan shape moving hand mechanism including return spring and fan shape moving hand train wheel apparatus
SEIKO INSTR INC2 citations62
US6987712B2Jan 17, 2006
Analog chronograph timepiece having plural motors
SEIKO INSTR INC2 citations60
US6755567B2Jun 29, 2004
Hand motion irregularity suppressed timepiece
SEIKO INSTR INC1 citations50
US7961556B2Jun 14, 2011
Day display apparatus and watch having the same
SEIKO INSTR INC0 citations39
HIRANO KEI
3 patentsUS8724430B2May 13, 2014
Retrograde display mechanism and timepiece having the same
HIRANO KEI3 citations59
US8279717B2Oct 2, 2012
Calendar mechanism and analog timepiece equipped with same mechanism
HIRANO KEI5 citations59
US8279718B2Oct 2, 2012
Calendar mechanism and analog timepiece equipped with same mechanism
HIRANO KEI1 citations48