Ronald J. Crook
33Patents
25h-index
37Co-inventors
81Inventor score
Filing activity: Feb 1, 1993 → Mar 25, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6527051B1 | Encapsulated chemicals for use in controlled time release applications and methods | Emerging Cross-Sectional Technologies | 312 | Expired |
| US6209646A | Controlling the release of chemical additives in well treating fluids | Chemistry; Metallurgy | 284 | Expired |
| US6554071B1 | Encapsulated chemicals for use in controlled time release applications and methods | Emerging Cross-Sectional Technologies | 280 | Expired |
| US5346012A | Fine particle size cement compositions and methods | Emerging Cross-Sectional Technologies | 210 | Expired |
| US6390195B1 | Methods and compositions for forming permeable cement sand screens in well bores | Fixed Constructions | 205 | Expired |
| US6444316B1 | Encapsulated chemicals for use in controlled time release applications and methods | Emerging Cross-Sectional Technologies | 146 | Expired |
| US6494951B1 | Cementing compositions using dry cementitious materials having improved flow properties | Emerging Cross-Sectional Technologies | 130 | Expired |
| US6245142A | Flow properties of dry cementitious materials | Emerging Cross-Sectional Technologies | 129 | Expired |
| US6170575A | Cementing methods using dry cementitious materials having improved flow properties | Emerging Cross-Sectional Technologies | 127 | Expired |
| US6478869B2 | Flow properties of dry cementitious materials | Emerging Cross-Sectional Technologies | 121 | Expired |
| US6561273B2 | Oil based compositions and method for temporarily sealing subterranean zones | Emerging Cross-Sectional Technologies | 114 | Expired |
| US6610139B2 | Methods of preparing particulate flow enhancing additives | Emerging Cross-Sectional Technologies | 113 | Expired |
| US6660080B2 | Particulate flow enhancing additives | Chemistry; Metallurgy | 111 | Expired |
| US6367549B1 | Methods and ultra-low density sealing compositions for sealing pipe in well bores | Emerging Cross-Sectional Technologies | 106 | Expired |
| US6887833B2 | Oil based compositions and method for temporarily sealing subterranean zones | Emerging Cross-Sectional Technologies | 98 | Expired |
| US6767867B2 | Methods of treating subterranean zones penetrated by well bores | Emerging Cross-Sectional Technologies | 79 | Expired |
| US6516884B1 | Stable well cementing methods and compositions | Chemistry; Metallurgy | 73 | Expired |
| US6793730B2 | Methods of cementing | Emerging Cross-Sectional Technologies | 67 | Expired |
| US7891424B2 | Methods of delivering material downhole | Fixed Constructions | 49 | Active |
| US6308777A | Cementing wells with crack and shatter resistant cement | Chemistry; Metallurgy | 43 | Expired |
| US6273191A | Cementing casing strings in deep water offshore wells | Chemistry; Metallurgy | 43 | Expired |
| US5791380A | Methods of forming insulated pipeline bundles | Chemistry; Metallurgy | 36 | Expired |
| US6478868B1 | Early-enhanced strength cement compositions and methods | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5533570A | Apparatus for downhole injection and mixing of fluids into a cement slurry | Fixed Constructions | 30 | Expired |
| US5718287A | Apparatus for downhole injection and mixing of fluids into a cement slurry | Fixed Constructions | 27 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.