Inventor · disambiguated record
Frank Close
Also filed as: CLOSE FRANK
3 granted patents·1 pending application·25 citations·filing 1989–2010
68Inventor score
Technology areasE21B
Top patents by PatentIndex Score
4 records- 0136US5013187APositioning components and energizing sealing assemblies thereforCOOPER IND INC·Filed 1989·Granted May 7, 1991·12 cites·11 claims
- 0233US4957313AEmergency suspension system for drill casingsCOOPER IND INC·Filed 1989·Granted Sep 18, 1990·9 cites·18 claims
- 0333US2011232912A1System and method for hydraulically powering a seafloor pump for delivering produced fluid from a subsea wellCHEVRON USA INC·Filed 2010·Application pending·0 cites
- 0427US4951972ARotatable sealing assembliesCOOPER IND INC·Filed 1989·Granted Aug 28, 1990·4 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when Frank Close files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →