David B. Wallace
38Patents
23h-index
17Co-inventors
82Inventor score
Filing activity: Sep 15, 1982 → Mar 9, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5736314A | Inline thermo-cycler | Emerging Cross-Sectional Technologies | 631 | Expired |
| US5658802A | Method and apparatus for making miniaturized diagnostic arrays | Physics | 303 | Expired |
| US5849208A | Making apparatus for conducting biochemical analyses | Physics | 237 | Expired |
| US4877745A | Apparatus and process for reagent fluid dispensing and printing | Emerging Cross-Sectional Technologies | 214 | Expired |
| US6325475A | Devices for presenting airborne materials to the nose | Human Necessities | 192 | Expired |
| US6334980B1 | Flexible apparatus with ablation formed chamber(s) for conducting bio-chemical analyses | Physics | 161 | Expired |
| US6390453B1 | Method and apparatus for delivery of fragrances and vapors to the nose | Emerging Cross-Sectional Technologies | 141 | Expired |
| US5229016A | Method and apparatus for dispensing spherical-shaped quantities of liquid solder | Electricity | 115 | Expired |
| US6672129B1 | Method for calibrating a sensor for measuring concentration of odors | Mechanical Engineering; Lighting; Heating | 92 | Expired |
| US5235352A | High density ink jet printhead | Performing Operations; Transporting | 89 | Expired |
| US6334851B1 | Method for collecting interstitial fluid from the skin | Human Necessities | 60 | Expired |
| US5721123A | Methods and apparatus for direct heating of biological material | Physics | 59 | Expired |
| US5772106A | Printhead for liquid metals and method of use | Electricity | 57 | Expired |
| US5581286A | Multi-channel array actuation system for an ink jet printhead | Performing Operations; Transporting | 55 | Expired |
| US5227813A | Sidewall actuator for a high density ink jet printhead | Performing Operations; Transporting | 53 | Expired |
| US6029896A | Method of drop size modulation with extended transition time waveform | Performing Operations; Transporting | 52 | Expired |
| US4812856A | Method and apparatus for dispensing a fluid with dispersed particles therein | Performing Operations; Transporting | 47 | Expired |
| US5415679A | Methods and apparatus for forming microdroplets of liquids at elevated temperatures | Chemistry; Metallurgy | 42 | Expired |
| US4490729A | Ink jet printer | Performing Operations; Transporting | 42 | Expired |
| US5643353A | Controlling depoling and aging of piezoelectric transducers | Performing Operations; Transporting | 35 | Expired |
| US6366829B1 | Bulk inventory network system (BINS) | Physics | 35 | Expired |
| US5461403A | Droplet volume modulation techniques for ink jet printheads | Performing Operations; Transporting | 34 | Expired |
| US6338715B1 | Digital olfactometer and method for testing olfactory thresholds | Human Necessities | 30 | Expired |
| US5402162A | Integrated multi-color ink jet printhead | Performing Operations; Transporting | 21 | Expired |
| US5400064A | High density ink jet printhead with double-U channel actuator | Performing Operations; Transporting | 20 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.