Individual holder
RAYFIELD JOHN F
2 granted patents·33 citations·filing 1977–1977
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
2 records- 0157US4147203AMethod and apparatus for controlling the heating and cooling function of a heat pump systemRAYFIELD JOHN F·Filed 1977·Granted Apr 3, 1979·21 cites·13 claims
- 0245US4158383AApparatus for coupling the components of a heat pump systemRAYFIELD JOHN F·Filed 1977·Granted Jun 19, 1979·12 cites·9 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →