Inventor · disambiguated record
Seishi Watahiki
Also filed as: WATAHIKI SEISHI
7 granted patents·241 citations·filing 1975–1992
88Inventor score
Files withHITACHI LTD7
Top patents by PatentIndex Score
7 records- 0191US4770105APiping travelling apparatusHITACHI LTD·Filed 1986·Granted Sep 13, 1988·78 cites·3 claims
- 0291US4037890AVertical type antifriction bearing deviceHITACHI LTD·Filed 1975·Granted Jul 26, 1977·71 cites·16 claims
- 0382US4918283AMethod of and apparatus for conducting plasma weldingHITACHI LTD·Filed 1988·Granted Apr 17, 1990·31 cites·3 claims
- 0466US4644791AMoving apparatus for a hollow curved pipe-arrangement and an operating method in the pipe-arrangement by using the moving apparatusHITACHI LTD·Filed 1984·Granted Feb 24, 1987·20 cites·4 claims
- 0560US5640462AImaging method of X-ray computerized tomography and apparatus for X-ray computerized tomographyHITACHI LTD·Filed 1992·Granted Jun 17, 1997·23 cites·14 claims
- 0653US4788409AMethod of and apparatus for automatically conducting all position plasma welding of pipesHITACHI LTD·Filed 1987·Granted Nov 29, 1988·11 cites·5 claims
- 0736US4915349AGas governor apparatus and gas piping systemHITACHI LTD·Filed 1988·Granted Apr 10, 1990·7 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →