Michael L. Walker
51Patents
23h-index
35Co-inventors
88Inventor score
Filing activity: Oct 20, 1980 → Sep 13, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4896424A | Composite cutting blade and method of making the blade | Performing Operations; Transporting | 93 | Expired |
| US4683954A | Composition and method of stimulating subterranean formations | Emerging Cross-Sectional Technologies | 92 | Expired |
| US5596808A | Safety for knife-blade lock | Performing Operations; Transporting | 87 | Expired |
| US5669447A | Methods for breaking viscosified fluids | Emerging Cross-Sectional Technologies | 82 | Expired |
| US5759964A | High viscosity well treating fluids, additives and methods | Chemistry; Metallurgy | 78 | Expired |
| US6490797B1 | Blade lock for folding knife | Performing Operations; Transporting | 55 | Expired |
| US4979301A | Locking mechanism for folding blade knife | Performing Operations; Transporting | 52 | Expired |
| US7321601B2 | Method and apparatus for data transfer using a time division multiple frequency scheme supplemented with polarity modulation | Electricity | 47 | Expired |
| US4498997A | Method and composition for acidizing subterranean formations | Emerging Cross-Sectional Technologies | 45 | Expired |
| US7289992B2 | Method, system, and program for lock and transaction management | Emerging Cross-Sectional Technologies | 45 | Expired |
| US4444668A | Well completion fluid compositions | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5366643A | Method and composition for acidizing subterranean formations | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4552672A | Method and composition for acidizing subterranean formations | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6989782B2 | Ultra-wideband radar system using sub-band coded pulses | Physics | 35 | Expired |
| US4551917A | Knife with locking folding blade | Performing Operations; Transporting | 34 | Expired |
| US4888121A | Compositions and method for controlling precipitation when acidizing sour wells | Emerging Cross-Sectional Technologies | 31 | Expired |
| US7342973B2 | Method and apparatus for adapting multi-band ultra-wideband signaling to interference sources | Electricity | 30 | Expired |
| US5413178A | Method for breaking stabilized viscosified fluids | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5441929A | Hydrochloric acid acidizing composition and method | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4522658A | Method and composition for protecting metal surfaces from oxidative environments | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7496574B2 | Managing locks and transactions | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4679631A | Composition and method of stimulating subterranean formations | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4949790A | Compositions and method for controlling precipitation when acidizing sour wells | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5591381A | Corrosion inhibiting compositions and methods | Chemistry; Metallurgy | 22 | Expired |
| US6863197B1 | Garment hanger with improved garment securing grips | Human Necessities | 21 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.