Inventor · disambiguated record
Hikaru Takematsu
Also filed as: TAKEMATSU HIKARU
7 granted patents·39 citations·filing 1974–1984
82Inventor score
Top patents by PatentIndex Score
7 records- 0159US4092501AKey telephone systemIWATSU ELECTRIC CO LTD·Filed 1977·Granted May 30, 1978·9 cites·3 claims
- 0248US4551583AControl signal transmission system for key telephone systemTELEGRAPH & TELEPHONE PUB CORP·Filed 1984·Granted Nov 5, 1985·10 cites·5 claims
- 0345US4280022AKey telephone systemsIWATSU ELECTRIC CO LTD·Filed 1979·Granted Jul 21, 1981·6 cites·20 claims
- 0445US4027110AKey telephone systemIWATSU ELECTRIC CO LTD·Filed 1974·Granted May 31, 1977·6 cites·5 claims
- 0543US4234765AKey telephone systemIWATSU ELECTRIC CO LTD·Filed 1978·Granted Nov 18, 1980·5 cites·10 claims
- 0629US4011415ACall circuit for key telephone system for giving direct station selection call priority over station callIWATSU ELECTRIC CO LTD·Filed 1976·Granted Mar 8, 1977·1 cites·3 claims
- 0726US4353066AChannel switching networkIWATSU ELECTRIC CO LTD·Filed 1980·Granted Oct 5, 1982·2 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →