Inventor
Tatsuo Iwasaka
Inventor
Katsuta, JP
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B66Bprimary
B66BElevators67%
G01SRadio direction-finding13%
G07CTime or attendance registers13%
G06MCounting mechanisms7%
PatentTitleYear
4,345,670'Elevator control system'19824,112,419'Apparatus for detecting the number of objects'19784,081,059'Elevator control system'19784,064,971'Elevator service information apparatus'19774,044,860'Elevator traffic demand detector'19774,043,429'Elevator car group control system'19774,030,572'Elevator control apparatus'19774,030,571'Elevator control system'19774,023,135'Apparatus for detecting the number of objects'19773,999,631'Elevator control system'19763,973,649'Elevator control apparatus'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1982Patents assigned to HITACHI LTD (11)· patent assignee history
1976–1982Based in Katsuta, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 11 | 1976–1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| Katsuta, JP | 11 | 1976–1982 |