Individual holder
HEWELT ROBERT K
2 granted patents·5 citations·filing 1979–1980
Individually held — no corporate assignee on record.
Technology mixG03D2
Top patents by PatentIndex Score
2 records- 0126US4273435AMethod and arrangement for eliminating ammonia vapors from developed diazo copy materialHEWELT ROBERT K·Filed 1979·Granted Jun 16, 1981·2 cites·5 claims
- 0221US4371247AArrangement for eliminating ammonia vapors from developed diazo copy materialHEWELT ROBERT K·Filed 1980·Granted Feb 1, 1983·3 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →