Assignee
BELLOFRAM CORP
15 granted patents·331 citations·filing 1975–2024
Top patents by PatentIndex Score
15 records- 0189US4674526ASwitching valveBELLOFRAM CORP·Filed 1986·Granted Jun 23, 1987·57 cites·16 claims
- 0284US3969991ARolling diaphragm and rolling diaphragm devicesBELLOFRAM CORP·Filed 1975·Granted Jul 20, 1976·61 cites·2 claims
- 0382US4229010ASelf-aligning shaft sealBELLOFRAM CORP·Filed 1978·Granted Oct 21, 1980·38 cites·3 claims
- 0480US4208060ASealed shaftBELLOFRAM CORP·Filed 1979·Granted Jun 17, 1980·32 cites·6 claims
- 0578US4729398ACurrent-to-pressure transducersBELLOFRAM CORP·Filed 1987·Granted Mar 8, 1988·43 cites·13 claims
- 0673US4390036ARolling diaphragm vacuum controlBELLOFRAM CORP·Filed 1981·Granted Jun 28, 1983·27 cites·15 claims
- 0766US4253675AImprovements of sealed shaftsBELLOFRAM CORP·Filed 1979·Granted Mar 3, 1981·20 cites·4 claims
- 0864US12504090B2Slam shut thermally triggered valveBELLOFRAM CORP·Filed 2024·Granted Dec 23, 2025·0 cites·5 claims
- 0956US11988299B2Slam shut thermally triggered valveBELLOFRAM CORP·Filed 2021·Granted May 21, 2024·0 cites·18 claims
- 1051US4705458AFluid operated pumpBELLOFRAM CORP·Filed 1984·Granted Nov 10, 1987·12 cites·8 claims
- 1151US4244589ASealed shaft of reduced diameterBELLOFRAM CORP·Filed 1979·Granted Jan 13, 1981·11 cites·4 claims
- 1251US4219042APneumatic relayBELLOFRAM CORP·Filed 1978·Granted Aug 26, 1980·9 cites·11 claims
- 1350US4263838APneumatic positionerBELLOFRAM CORP·Filed 1978·Granted Apr 28, 1981·9 cites·9 claims
- 1447US4466455ARolling diaphragm vacuum control with check valveBELLOFRAM CORP·Filed 1982·Granted Aug 21, 1984·10 cites·2 claims
- 1531US4905720ACurrent-to-pressure transducer with enhanced performance featuresBELLOFRAM CORP·Filed 1988·Granted Mar 6, 1990·2 cites·13 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →