Inventor · disambiguated record
Katashi Hazama
Also filed as: HANMA KENTARO · HAZAMA KATASHI · MIURA MICHIYORI · MURAKAMI TAKESHI
11 granted patents·171 citations·filing 1977–1988
91Inventor score
Files withHITACHI LTD11
Top patents by PatentIndex Score
11 records- 0190US4296391ASurface-acoustic-wave filter for channel selection system of television receiverHITACHI LTD·Filed 1978·Granted Oct 20, 1981·34 cites·12 claims
- 0284US4206380APiezoelectric surface acoustic wave device with suppression of reflected signalsHITACHI LTD·Filed 1978·Granted Jun 3, 1980·24 cites·2 claims
- 0374US4510530ASignal reproducing circuit for a video tape recorderHITACHI LTD·Filed 1982·Granted Apr 9, 1985·17 cites·10 claims
- 0474US4427515ASurface acoustic wave device and method for manufacturing the sameHITACHI LTD·Filed 1981·Granted Jan 24, 1984·18 cites·9 claims
- 0574US4201964AElastic surface wave deviceHITACHI LTD·Filed 1978·Granted May 6, 1980·16 cites·6 claims
- 0672US4991163AOptical information medium with sample mark area and multiple transcription preventionHITACHI LTD·Filed 1988·Granted Feb 5, 1991·20 cites·8 claims
- 0768US4396851ASurface acoustic wave deviceHITACHI LTD·Filed 1980·Granted Aug 2, 1983·15 cites·4 claims
- 0863US4422000AUnidirectional surface acoustic wave device with meandering electrodeHITACHI LTD·Filed 1982·Granted Dec 20, 1983·13 cites·6 claims
- 0944US4223285AElastic surface wave filterHITACHI LTD·Filed 1977·Granted Sep 16, 1980·5 cites·10 claims
- 1039US4212029AElastic surface wave filter for color television receiverHITACHI LTD·Filed 1977·Granted Jul 8, 1980·4 cites·10 claims
- 1138US4390807ASurface acoustic wave deviceHITACHI LTD·Filed 1982·Granted Jun 28, 1983·5 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →