Assignee
PIEZO SONA TOOL CORP
US·8 granted patents·168 citations·filing 1984–2001
Top patents by PatentIndex Score
8 records- 0173US4658897ADownhole transducer systemsPIEZO SONA TOOL CORP·Filed 1984·Granted Apr 21, 1987·40 cites·13 claims
- 0271US6496448B1Transducer receiving voltage inputs, such as square waves, rich in harmonicsPIEZO SONA TOOL CORP·Filed 2000·Granted Dec 17, 2002·21 cites·75 claims
- 0363US5122992ATransducer assemblyPIEZO SONA TOOL CORP·Filed 1990·Granted Jun 16, 1992·22 cites·28 claims
- 0460US4788467ADownhole oil well vibrating systemPIEZO SONA TOOL CORP·Filed 1987·Granted Nov 29, 1988·30 cites·5 claims
- 0556US6491095B2Transducers, and methods of producing transducers, with cryogenically treated transducer membersPIEZO SONA TOOL CORP·Filed 2001·Granted Dec 10, 2002·19 cites·61 claims
- 0647US4682070ADownhole oil well vibrating systemPIEZO SONA TOOL CORP·Filed 1984·Granted Jul 21, 1987·11 cites·16 claims
- 0744US4774427ADownhole oil well vibrating systemPIEZO SONA TOOL CORP·Filed 1987·Granted Sep 27, 1988·16 cites·11 claims
- 0843USRE37204ETransducer assemblyPIEZO SONA TOOL CORP·Filed 1999·Granted Jun 5, 2001·9 cites·28 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →