Assignee
LONG ERWIN L
US·3 granted patents·59 citations·filing 1975–1992
Top patents by PatentIndex Score
3 records- 0163US4067198AMethod and structural support for increasing load carrying capacity in permafrostLONG ERWIN L·Filed 1975·Granted Jan 10, 1978·21 cites·12 claims
- 0256US5190098AThermosyphon with evaporator having rising and falling sectionsLONG ERWIN L·Filed 1992·Granted Mar 2, 1993·26 cites·7 claims
- 0342US5238053AMethod of and system for warming road surfaceLONG ERWIN L·Filed 1992·Granted Aug 24, 1993·12 cites·17 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →