Inventor · disambiguated record
Roy Heppinstall
Also filed as: HEPPINSTALL ROY
9 granted patents·71 citations·filing 1977–2002
87Inventor score
Top patents by PatentIndex Score
9 records- 0161US5684364AElectron beam tube collector having ceramic shielding meansEEV LTD·Filed 1994·Granted Nov 4, 1997·17 cites·20 claims
- 0259US7202605B2Electron beam tube apparatus having a common output combining cavityE2V TECH UK LTD·Filed 2002·Granted Apr 10, 2007·4 cites·6 claims
- 0353US5239272AElectron beam tube arrangements having primary and secondary output cavitiesEEV LTD·Filed 1991·Granted Aug 24, 1993·12 cites·15 claims
- 0451US4099133AKlystron amplifiersENGLISH ELECTRIC VALVE CO LTD·Filed 1977·Granted Jul 4, 1978·6 cites·22 claims
- 0547US5283534AHigh frequency amplifying apparatus with a collector which has a periodic amplitude variable longitudinal magnetic field thereinEEV LTD·Filed 1991·Granted Feb 1, 1994·9 cites·8 claims
- 0644US4733192AAmplifying arrangements including a klystron having a power transfer characteristic which is substantially the same over its entire passbandBRITISH BROADCASTING CORP·Filed 1986·Granted Mar 22, 1988·8 cites·10 claims
- 0740US5281923AAmplifying arrangements which modulate an electron beamEEV LTD·Filed 1991·Granted Jan 25, 1994·7 cites·7 claims
- 0837US5691667ARF radiation absorbing material disposed between the cathode and anode of an electron beam tubeENGLISH ELECTRIC VALVE CO LTD·Filed 1992·Granted Nov 25, 1997·6 cites·17 claims
- 0928US4820996AAmplifying arrangementsENGLISH ELECTRIC VALVE CO LTD·Filed 1987·Granted Apr 11, 1989·2 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →