Inventor · disambiguated record
Tatsuo Iwasaka
Also filed as: IWASAKA TATSUO
11 granted patents·305 citations·filing 1975–1981
92Inventor score
Files withHITACHI LTD11
Top patents by PatentIndex Score
11 records- 0193US4044860AElevator traffic demand detectorHITACHI LTD·Filed 1976·Granted Aug 30, 1977·61 cites·12 claims
- 0283US3973649AElevator control apparatusHITACHI LTD·Filed 1975·Granted Aug 10, 1976·32 cites·17 claims
- 0379US4112419AApparatus for detecting the number of objectsHITACHI LTD·Filed 1976·Granted Sep 5, 1978·53 cites·9 claims
- 0477US4030572AElevator control apparatusHITACHI LTD·Filed 1975·Granted Jun 21, 1977·26 cites·14 claims
- 0575US4030571AElevator control systemHITACHI LTD·Filed 1975·Granted Jun 21, 1977·24 cites·15 claims
- 0674US4081059AElevator control systemHITACHI LTD·Filed 1976·Granted Mar 28, 1978·23 cites·26 claims
- 0769US4345670AElevator control systemHITACHI LTD·Filed 1981·Granted Aug 24, 1982·19 cites·12 claims
- 0864US3999631AElevator control systemHITACHI LTD·Filed 1975·Granted Dec 28, 1976·16 cites·16 claims
- 0962US4023135AApparatus for detecting the number of objectsHITACHI LTD·Filed 1975·Granted May 10, 1977·22 cites·11 claims
- 1061US4064971AElevator service information apparatusHITACHI LTD·Filed 1976·Granted Dec 27, 1977·16 cites·9 claims
- 1158US4043429AElevator car group control systemHITACHI LTD·Filed 1975·Granted Aug 23, 1977·13 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →