Inventor
Norikazu Seki
Inventor
Hamamatsu, JP
Overview
Patents· 2 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B01Dprimary
B01DSeparation20%
E21BEarth or rock drilling20%
E21DShafts20%
F01MLubricating of machines or engines in general20%
G01FMeasuring volume, volume flow, mass flow or liquid level20%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976Patents assigned to TEKKEN CONSTR CO (1)· patent assignee history
1976Based in Chiba, JP· patent location history
2020Patents assigned to ROKI CO LTD (1)· patent assignee history
2020Based in Hamamatsu, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ROKI CO LTD | 1 | 2020 |
| TEKKEN CONSTR CO | 1 | 1976 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hamamatsu, JP | 1 | 2020 |
| Chiba, JP | 1 | 1976 |