Inventor · disambiguated record
Masaharu Kumada
Also filed as: KUMADA MASAHARU · MISUMI AKIRA
14 granted patents·221 citations·filing 1977–2001
92Inventor score
Files withHITACHI LTD14
Top patents by PatentIndex Score
14 records- 0194US4481265APhotovoltaic-storage battery deviceHITACHI LTD·Filed 1983·Granted Nov 6, 1984·97 cites·11 claims
- 0287US4543441ASolar battery using amorphous siliconHITACHI LTD·Filed 1984·Granted Sep 24, 1985·58 cites·15 claims
- 0378US5216321AShadow-mask type color cathode-ray tubeHITACHI LTD·Filed 1989·Granted Jun 1, 1993·22 cites·16 claims
- 0470US4833361AImpregnated cathode having cathode base body and refractory metal support welded togetherHITACHI LTD·Filed 1987·Granted May 23, 1989·15 cites·8 claims
- 0548US5138461AImplosion-protected cathode-ray tubeHITACHI LTD·Filed 1989·Granted Aug 11, 1992·6 cites·3 claims
- 0644US4446404ADirectly heated oxide cathode and production thereofHITACHI LTD·Filed 1980·Granted May 1, 1984·4 cites·13 claims
- 0744US4382206ADirectly heated type oxide cathodeHITACHI LTD·Filed 1980·Granted May 3, 1983·4 cites·12 claims
- 0843US6346291B2Method of producing a cathode ray tubeHITACHI LTD·Filed 2001·Granted Feb 12, 2002·0 cites·8 claims
- 0943US5814928ACathode ray tube having reduced doming effectHITACHI LTD·Filed 1996·Granted Sep 29, 1998·4 cites·8 claims
- 1043US4208208ANickel alloy base metal plate for directly heated oxide cathodesHITACHI LTD·Filed 1978·Granted Jun 17, 1980·6 cites·7 claims
- 1140US6246163B1Cathode ray tube having bismuth oxide layer on color selective electrodeHITACHI LTD·Filed 1998·Granted Jun 12, 2001·3 cites·57 claims
- 1234US4872924AMethod of producing shadow mask of color cathode ray tubeHITACHI LTD·Filed 1987·Granted Oct 10, 1989·2 cites·12 claims
- 1330US4222775ABase metal plate materials for directly heated oxide cathodesHITACHI LTD·Filed 1978·Granted Sep 16, 1980·0 cites·5 claims
- 1430US4146393ABase metal plate materials for directly heated oxide cathodeHITACHI LTD·Filed 1977·Granted Mar 27, 1979·0 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Masaharu Kumada files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →