David John Buttle
16Patents
6h-index
18Co-inventors
63Inventor score
Filing activity: Nov 30, 1990 → Apr 21, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5106621A | Cysteine proteinases, production and use | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7053606B2 | Measurement of residual and thermally-induced stress in a rail | Physics | 10 | Expired |
| US5468480A | Pharmaceutical composition of purified chymopapain | Human Necessities | 10 | Expired |
| US6964202B2 | Detection of rolling contact fatigue | Physics | 9 | Expired |
| US9851265B2 | Apparatus and method for measuring properties of a ferromagnetic material | Physics | 8 | Active |
| US5828211A | Determining stress in ferromagnetic materials from measurements of magnetic anisotropy and magnetic permeability | Physics | 7 | Expired |
| US6854336B2 | Measurement of stress in a ferromagnetic material | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US5380656A | Chymopapain and method of purifying it on an inhibitory dipeptide affinity column | Human Necessities | 5 | Expired |
| US6850055B2 | Measurement of the variation of a material property with depth in a ferromagnetic material | Physics | 4 | Expired |
| US7876096B2 | Detecting failures in flexible multistrand steel structures | Physics | 3 | Active |
| US7268541B2 | Detecting failures of flexible multistrand steel structures | Physics | 2 | Expired |
| US7215117B2 | Measurement with a magnetic field | Physics | 2 | Expired |
| US9249657B2 | System and method for monitoring a subsea well | Fixed Constructions | 1 | Active |
| US10765779B2 | Medical implant | Human Necessities | 0 | Active |
| US11360050B2 | Hoses, and detecting failures in reinforced hoses | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US8316726B2 | Biaxial stress management | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.