Individual holder
PIRKLE FRED L
US·6 granted patents·349 citations·filing 1983–2009
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
6 records- 0197US4717112AComputer workstationPIRKLE FRED L·Filed 1986·Granted Jan 5, 1988·136 cites·7 claims
- 0291US4848389AFreeze protection devicePIRKLE FRED L·Filed 1989·Granted Jul 18, 1989·67 cites·2 claims
- 0388US4460007AValve mechanismPIRKLE FRED L·Filed 1983·Granted Jul 17, 1984·51 cites·29 claims
- 0487US8056265B2Shoe tying aid and methodPIRKLE FRED L·Filed 2009·Granted Nov 15, 2011·31 cites·12 claims
- 0587US4883082ATemperature-responsive valvePIRKLE FRED L·Filed 1989·Granted Nov 28, 1989·50 cites·6 claims
- 0651US4438777AFreeze protection valve with improved resetting capabilityPIRKLE FRED L·Filed 1983·Granted Mar 27, 1984·14 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →