Inventor · disambiguated record
Katubumi Koyanagi
Also filed as: KOYANAGI KATUBUMI
10 granted patents·102 citations·filing 1978–1985
89Inventor score
Top patents by PatentIndex Score
10 records- 0182US4229080AAdditional electrode of electrochromic display and refreshing method for the sameSHARP KK·Filed 1978·Granted Oct 21, 1980·33 cites·13 claims
- 0263US4739431AThin-film magnetic headSHARP KK·Filed 1985·Granted Apr 19, 1988·14 cites·4 claims
- 0354US4300138AElectric memory detector in an ECD driverSHARP KK·Filed 1979·Granted Nov 10, 1981·11 cites·3 claims
- 0454US4247855ASegmented bargraph display by an electrochromic display deviceSHARP KK·Filed 1978·Granted Jan 27, 1981·12 cites·13 claims
- 0553US4535329AConstant current/constant voltage drive for an electrochromic display cellSHARP KK·Filed 1983·Granted Aug 13, 1985·13 cites·2 claims
- 0643US4295138ACombined constant potential and constant voltage driving technique for electrochromic displaysSHARP KK·Filed 1979·Granted Oct 13, 1981·7 cites·9 claims
- 0738US4430182AManufacture of display electrode layers in electrochromic display devicesSHARP KK·Filed 1981·Granted Feb 7, 1984·6 cites·6 claims
- 0833US4420749ACharge transfer type electrochromic display devicesSHARP KK·Filed 1981·Granted Dec 13, 1983·3 cites·11 claims
- 0932US4364040AElectrochromic display driver with faculties of stabilizing coloration contrast and insuring uniform bleaching conditionSHARP KK·Filed 1979·Granted Dec 14, 1982·2 cites·11 claims
- 1028US4399436AElectrochromic display devicesHAMADA HIROSHI·Filed 1981·Granted Aug 16, 1983·1 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when Katubumi Koyanagi 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 →