Inventor · disambiguated record
Klaas Zwart
Also filed as: ZWART KLAAS · ZWART KLAAS J · ZWART KLAAS JOHANNES
9 granted patents·3 pending applications·569 citations·filing 1981–2023
92Inventor score
Top patents by PatentIndex Score
12 records- 0189US5467822APack-off toolFiled 1992·Granted Nov 21, 1995·142 cites·11 claims
- 0288US5366010ARetrievable bridge plug and a running tool thereforZWART KLAAS J·Filed 1992·Granted Nov 22, 1994·143 cites·21 claims
- 0375US5052849AQuick-locking connectorPETROLINE WIRELINE SERVICES·Filed 1990·Granted Oct 1, 1991·66 cites·4 claims
- 0475US4883121ADownhole lock assemblyPETROLINE WIRELINE SERVICES·Filed 1988·Granted Nov 28, 1989·49 cites·8 claims
- 0572US5267613AUpstroke jarPETROLINE WIRELINE SERVICES·Filed 1992·Granted Dec 7, 1993·58 cites·16 claims
- 0667US5355950ACentraliserZWART KLAAS·Filed 1993·Granted Oct 18, 1994·45 cites·20 claims
- 0760US4487221ADevice for temporarily sealing a pipeZWART KLAAS·Filed 1981·Granted Dec 11, 1984·24 cites·9 claims
- 0850US4607692AWireline jarZWART KLAAS·Filed 1984·Granted Aug 26, 1986·19 cites·13 claims
- 0950US2025240294A1User identification systemHANSCAN HOLDINGS LTD·Filed 2023·Application pending·0 cites
- 1045US5538082ADownhole running system & method for setting a downhole tool in a boreFiled 1995·Granted Jul 23, 1996·23 cites·16 claims
- 1138US2019091495A1An abseiling deviceZWART KLAAS·Filed 2017·Application pending·0 cites
- 1229US2017063549A1Portable Biometric-based Identity DeviceHANSCAN IP BV·Filed 2015·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Klaas Zwart 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 →