Inventor · disambiguated record
Keiji Fukuyama
Also filed as: FUKUYAMA KEIJI
16 granted patents·217 citations·filing 1977–2001
94Inventor score
Technology areasH01J
Files withMITSUBISHI ELECTRIC CORP16
Top patents by PatentIndex Score
16 records- 0189US4797593ACathode for electron tubeMITSUBISHI ELECTRIC CORP·Filed 1986·Granted Jan 10, 1989·47 cites·30 claims
- 0287US4319158AElectrode for discharge lampMITSUBISHI ELECTRIC CORP·Filed 1979·Granted Mar 9, 1982·22 cites·2 claims
- 0383US4924137ACathode for electron tubeMITSUBISHI ELECTRIC CORP·Filed 1989·Granted May 8, 1990·30 cites·9 claims
- 0481US4136227AElectrode of discharge lampMITSUBISHI ELECTRIC CORP·Filed 1977·Granted Jan 23, 1979·17 cites·4 claims
- 0565US5073743AElectrode for discharge light sourceMITSUBISHI ELECTRIC CORP·Filed 1989·Granted Dec 17, 1991·14 cites·2 claims
- 0665US4864187ACathode for electron tube and manufacturing method thereofMITSUBISHI ELECTRIC CORP·Filed 1986·Granted Sep 5, 1989·11 cites·14 claims
- 0764US5118984AElectron tube cathodeMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Jun 2, 1992·18 cites·20 claims
- 0863US6583561B2Material for converting ultraviolet ray and display device using the sameMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Jun 24, 2003·6 cites·12 claims
- 0962US5122707ACathode in a cathode ray tubeMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Jun 16, 1992·16 cites·7 claims
- 1060US5436530AFlat display apparatus with supplemental biasingMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Jul 25, 1995·15 cites·20 claims
- 1155US6545397B2Cathode for electron tubeMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Apr 8, 2003·3 cites·8 claims
- 1248US5495146APlanar display apparatusMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Feb 27, 1996·7 cites·11 claims
- 1345US4345186AMetal vapor discharge lampMITSUBISHI ELECTRIC CORP·Filed 1980·Granted Aug 17, 1982·5 cites·14 claims
- 1444US4897574AHot cathode in wire formMITSUBISHI ELECTRIC CORP·Filed 1987·Granted Jan 30, 1990·5 cites·11 claims
- 1532US5587627APlanar display apparatus having exposed insulated substrate portionMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Dec 24, 1996·1 cites·12 claims
- 1629US5015497ACathode for electron tube and manufacturing method thereofMITSUBISHI ELECTRIC CORP·Filed 1989·Granted May 14, 1991·0 cites·6 claims
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