M. I. Co., Ltd.
75Patents
41Active
75Granted
50Portfolio score
Filing activity: Dec 1, 1986 → Jun 4, 2014 · 30 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8714253B2 | Method and system for injection of viscous unweighted, low-weighted, or solids contaminated fluids downhole during oilfield injection process | Fixed Constructions | 156 | Active |
| US6817414B2 | Acid coated sand for gravel pack and filter cake clean-up | Emerging Cross-Sectional Technologies | 149 | Expired |
| US6247543A | Shale hydration inhibition agent and method of use | Emerging Cross-Sectional Technologies | 102 | Expired |
| US6291405A | Glycol based drilling fluid | Chemistry; Metallurgy | 97 | Expired |
| US6828279B2 | Biodegradable surfactant for invert emulsion drilling fluid | Chemistry; Metallurgy | 65 | Expired |
| US6218342A | Oil-based drilling fluid | Emerging Cross-Sectional Technologies | 55 | Expired |
| US6308788A | Conductive medium for openhole logging and logging while drilling | Chemistry; Metallurgy | 52 | Expired |
| US6787505B1 | Electrically conductive non-aqueous wellbore fluids | Chemistry; Metallurgy | 41 | Expired |
| US6959767B2 | Remediation treatment of sustained casing pressures (SCP) in wells with top down surface injection of fluids and additives | Chemistry; Metallurgy | 41 | Expired |
| US6589917B2 | Invert emulsion drilling fluids and muds having negative alkalinity and elastomer compatibility | Fixed Constructions | 39 | Expired |
| US7132389B2 | Acid-coated sand for gravel pack and filter cake clean-up | Emerging Cross-Sectional Technologies | 38 | Expired |
| US6586372B1 | Additive for increasing the density of a fluid and fluid comprising such additive | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6806233B2 | Methods of using reversible phase oil based drilling fluid | Chemistry; Metallurgy | 33 | Expired |
| US6405809B2 | Conductive medium for openhold logging and logging while drilling | Physics | 32 | Expired |
| US6790811B2 | Oil based drilling fluid | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6857485B2 | Shale hydration inhibition agent and method of use | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6881349B2 | Method for recycling of oil based drilling fluid contaminated with water and water contaminated with oil based drilling fluid | Emerging Cross-Sectional Technologies | 28 | Expired |
| US8083935B2 | Cuttings vessels for recycling oil based mud and water | Fixed Constructions | 27 | Active |
| US6679385B2 | Motor control system for vibrating screen separator | Performing Operations; Transporting | 25 | Expired |
| US7819255B2 | Screen for a vibratory separator | Performing Operations; Transporting | 24 | Active |
| US7740068B2 | Silicate-based wellbore fluid and methods for stabilizing unconsolidated formations | Emerging Cross-Sectional Technologies | 22 | Active |
| US6838008B2 | Flow diverter and exhaust blower for vibrating screen separator assembly | Performing Operations; Transporting | 21 | Expired |
| US7770665B2 | Use of cuttings tank for in-transit slurrification | Fixed Constructions | 21 | Active |
| US7004448B2 | Trim insert for choke assembly | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6831043B2 | High performance water based drilling mud and method of use | Chemistry; Metallurgy | 19 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.