David Mitchell
15Patents
7h-index
8Co-inventors
59Inventor score
Filing activity: Dec 12, 1985 → Mar 23, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4891044A | Ophthalmic aspirating/irrigating device | Human Necessities | 35 | Expired |
| US6291221A | Heat tolerant phytases | Chemistry; Metallurgy | 22 | Expired |
| US4628861A | Metering and proportioning system for a two-component liquid resin and liquid hardener adhesive | Performing Operations; Transporting | 16 | Expired |
| US5927107A | Method and apparatus for locking a storage container | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6358722B1 | Heat tolerant phytases | Human Necessities | 11 | Expired |
| US5316215A | Liquid delivery apparatus | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7048145B2 | Liquid delivery apparatus | Performing Operations; Transporting | 7 | Expired |
| US6699704B1 | Heat tolerant phytases | Chemistry; Metallurgy | 5 | Expired |
| US6938650B2 | Filling apparatus | Performing Operations; Transporting | 3 | Expired |
| US10376820B2 | Removing solids from a flowing fluid using a care-free pumped or gravity flow rotating drum screen with stationary stabilization assemblies | Performing Operations; Transporting | 2 | Active |
| US9616366B2 | Care-free pumped or gravity flow rotating drum screen with stationary stabilization pad assemblies | Performing Operations; Transporting | 2 | Active |
| US8795401B2 | Filter with cyclone separation means | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US9381527B2 | Liquid delivery apparatus | Emerging Cross-Sectional Technologies | 1 | Active |
| US6681812B2 | Attachment for a vacuum pump | Emerging Cross-Sectional Technologies | 1 | Expired |
| US6446683B1 | Attachment for a vacuum pump | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.