Inventor
Kazutaka Imai
Inventor
Chiba, JP
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G04Bprimary
G04BMechanically-driven clocks or watches63%
G04CElectromechanical clocks or watches13%
G04GElectronic time-pieces13%
F16HGearing6%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
10,060,514Continuously variable chain-belt transmission and method of assembling same20188,333,503'Portable timepiece'20128,333,502'Portable timepiece'20128,333,504'Portable timepiece'20128,325,565'Timepiece'20128,272,778'Watch'20128,235,587'Portable device and portable watch'20127,976,214'Portable watch'20117,815,365'Portable timepiece'20107,744,272'Portable apparatus and portable timepiece having a push button'20107,614,785'Timepiece having rotatable and detachable bezel'2009Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2009–2012Patents assigned to SEIKO INSTR INC (10)· patent assignee history
2009–2012Based in Chiba, JP· patent location history
2012–2018Patents assigned to IMAI KAZUTAKA (7)· patent assignee history
2012Patents assigned to HIRANUMA HARUKI (5)· patent assignee history
2012Patents assigned to HOZUMI YOSHIO (1)· patent assignee history
2012Based in Mihama-ku, JP· patent location history
2018Patents assigned to JATCO LTD (1)· patent assignee history
2018Based in Machida, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SEIKO INSTR INC | 10 | 2009–2012 |
| IMAI KAZUTAKAself | 7 | 2012–2018 |
| HIRANUMA HARUKI | 5 | 2012 |
| HOZUMI YOSHIO | 1 | 2012 |
| JATCO LTD | 1 | 2018 |
Locations
| Location | Patents | Span |
|---|---|---|
| Chiba, JP | 9 | 2009–2012 |
| Machida, JP | 1 | 2018 |
| Mihama-ku, JP | 1 | 2012 |