Individual holder
BUTLER WILLIAM F
US·3 granted patents·68 citations·filing 1990–1992
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0181US5091621AMethod and apparatus for destroying a syringe needleBUTLER WILLIAM F·Filed 1990·Granted Feb 25, 1992·39 cites·6 claims
- 0250US5264675AMethod and apparatus for destroying a syringe needleBUTLER WILLIAM F·Filed 1992·Granted Nov 23, 1993·12 cites·22 claims
- 0332US5268549AMethod and apparatus for destroying a syringe needleBUTLER WILLIAM F·Filed 1992·Granted Dec 7, 1993·17 cites·16 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →