Keith A. Rispler
15Patents
12h-index
19Co-inventors
67Inventor score
Filing activity: Sep 28, 2001 → Jan 4, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6662874B2 | System and method for fracturing a subterranean well formation for improving hydrocarbon production | Fixed Constructions | 109 | Expired |
| US6719054B2 | Method for acid stimulating a subterranean well formation for improving hydrocarbon production | Fixed Constructions | 81 | Expired |
| US7182137B2 | Cementitious compositions containing interground cement clinker and zeolite | Chemistry; Metallurgy | 76 | Expired |
| US7285166B2 | Zeolite-containing cement composition | Emerging Cross-Sectional Technologies | 54 | Expired |
| US6964302B2 | Zeolite-containing cement composition | Emerging Cross-Sectional Technologies | 53 | Expired |
| US7332026B2 | Cementitious compositions containing interground cement clinker and zeolite | Chemistry; Metallurgy | 53 | Active |
| US6989057B2 | Zeolite-containing cement composition | Emerging Cross-Sectional Technologies | 33 | Expired |
| US7285164B2 | Fluid loss additives for cement slurries | Emerging Cross-Sectional Technologies | 28 | Active |
| US7303015B2 | Cementitious compositions containing interground cement clinker and zeolite | Chemistry; Metallurgy | 23 | Active |
| US8074715B2 | Methods of setting particulate plugs in horizontal well bores using low-rate slurries | Fixed Constructions | 17 | Active |
| US7690427B2 | Sand plugs and placing sand plugs in highly deviated wells | Fixed Constructions | 16 | Active |
| US7140440B2 | Fluid loss additives for cement slurries | Emerging Cross-Sectional Technologies | 14 | Expired |
| US7326291B2 | Cementitious compositions containing interground cement clinker and zeolite | Chemistry; Metallurgy | 10 | Active |
| US8096358B2 | Method of perforating for effective sand plug placement in horizontal wells | Fixed Constructions | 9 | Active |
| US8469089B2 | Process and apparatus to improve reliability of pinpoint stimulation operations | Emerging Cross-Sectional Technologies | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.