Individual holder
COLLINSWORTH STEPHEN M
US·3 granted patents·33 citations·filing 1990–1992
Individually held — no corporate assignee on record.
Technology mixE21B3
Top patents by PatentIndex Score
3 records- 0134US5058689AWear protective means for a drilling toolCOLLINSWORTH STEPHEN M·Filed 1990·Granted Oct 22, 1991·12 cites·18 claims
- 0233US5234063ARemovable wear protective means for a drilling toolCOLLINSWORTH STEPHEN M·Filed 1992·Granted Aug 10, 1993·11 cites·29 claims
- 0333US5222565ADrill section of a drilling toolCOLLINSWORTH STEPHEN M·Filed 1992·Granted Jun 29, 1993·10 cites·19 claims
Join the waitlist — get patent alerts
Get an alert when COLLINSWORTH STEPHEN M files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →