M-I DRILLING FLUIDS COMPANY
Patent Owner
Stats
- 1 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Jan 13, 1998 most recent publication
Details
- 1 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 1,320 Total Citation Count
- Dec 27, 1976 Earliest Filing
- 59 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
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Recent Patents
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Title
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Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4710586 Fluid loss additives for oil base muds and low fluid loss compositions thereofExpiredOct 17, 84Dec 01, 87[C07C]
4696751 Vibratory screening apparatus and method for removing suspended solids from liquidExpiredAug 04, 86Sep 29, 87[B07B, B01D]
4647859 Method for effecting electric well logging with introduction of a fluid composition to minimize the effect of interfering ionsExpiredJun 27, 85Mar 03, 87[C09K, G01V]
4637883 Fluid loss additives for oil base muds and low fluid loss compositions thereofExpiredApr 07, 86Jan 20, 87[C09K]
4625548 Hydrostatic head pressure sensors for a system to determine fluid level and weightExpiredApr 12, 85Dec 02, 86[G01L, G01N, G01F]
4625553 System to determine the level and weight of liquid in a tank or the likeExpiredApr 12, 85Dec 02, 86[G01N]
4615841 Process for making alkaline-earth metal salts of alkaryl sulfonic acidsExpiredApr 25, 85Oct 07, 86[C07C]
4596662 Compositions for use in drilling, completion and workover fluidsExpiredJun 13, 84Jun 24, 86[C09K, E21B]
4595736 Thermally stable drilling fluid additive comprised of a copolymer of catechol-based monomerExpiredDec 28, 84Jun 17, 86[C09K, C08F]
4544756 Zwiterionic 2-alkyl imidazolines as emulsifying agents for oil based drilling fluidsExpiredNov 17, 83Oct 01, 85[C07D]
4525285 Method of preventing loss of an oil-base drilling fluid during the drilling of an oil or gas well into a subterranean formationExpiredAug 31, 83Jun 25, 85[C09K]
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