loadpatents
Patent applications and USPTO patent grants for PERSCHKE; Malcolm.The latest application filed is for "wellhead lubricator and methods of operating same".
Patent | Date |
---|---|
Wellhead Lubricator And Methods Of Operating Same App 20220018206 - PERSCHKE; Malcolm | 2022-01-20 |
Downhole cement flow Grant 10,689,946 - Perschke , et al. | 2020-06-23 |
Downhole cement flow Grant 10,519,743 - Perschke , et al. Dec | 2019-12-31 |
Downhole Cement Flow App 20190203561 - Perschke; Malcolm ;   et al. | 2019-07-04 |
Downhole Cement Flow App 20190203560 - Perschke; Malcolm ;   et al. | 2019-07-04 |
Downhole cement flow Grant 10,227,843 - Perschke , et al. | 2019-03-12 |
Downhole Cement Flow App 20160222756 - Perschke; Malcolm ;   et al. | 2016-08-04 |
System And Methodology For Running Casing Strings Through A Conductor Tube App 20160208586 - PERSCHKE; Malcolm ;   et al. | 2016-07-21 |
Cutting tool Grant 8,881,817 - Perschke , et al. November 11, 2 | 2014-11-11 |
Cutting Tool App 20110290487 - Perschke; Malcolm ;   et al. | 2011-12-01 |
Methods of making multiple casing cuts Grant 7,762,330 - Saylor, III , et al. July 27, 2 | 2010-07-27 |
Methods Of Making Multiple Casing Cuts App 20100006290 - Saylor, III; James E. ;   et al. | 2010-01-14 |
Milling system and method of milling App 20080093076 - Patil; Harshad ;   et al. | 2008-04-24 |
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