David A. Richardson
26Patents
11h-index
18Co-inventors
72Inventor score
Filing activity: Feb 22, 1974 → Jul 10, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5149329A | Surgical suture carrier and method for urinary bladder neck suspension | Human Necessities | 465 | Expired |
| US4604031A | Hollow fluid cooled turbine blades | Emerging Cross-Sectional Technologies | 64 | Expired |
| USD507167S1 | Multi function stud climbing and carpentry tool | General | 54 | Expired |
| US3948098A | Vortex flow meter transmitter including piezo-electric sensor | Physics | 48 | Expired |
| US4497610A | Shroud assembly for a gas turbine engine | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US4704676A | Method and apparatus for configuring a controller | Emerging Cross-Sectional Technologies | 39 | Expired |
| US3940935A | Positioning device using negative spring-rate tensioning means | Mechanical Engineering; Lighting; Heating | 32 | Expired |
| US4473336A | Turbine blades | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4085614A | Vortex flow meter transducer | Physics | 21 | Expired |
| US5041233A | Process for preparing soap-acyl isethionate compositions | Chemistry; Metallurgy | 20 | Expired |
| US4118977A | Electric signal transmitter for vibrating-wire sensor | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4016721A | Positioning device using negative spring-rate tensioning means | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4658348A | Method and apparatus for configuring a controller | Emerging Cross-Sectional Technologies | 8 | Expired |
| USD376554S | Vehicle stopping indicator | General | 7 | Expired |
| US5025770A | Apparatus and engine to provide power to the apparatus | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4616332A | Apparatus for converting analog-format signals to pulse-format signals | Physics | 5 | Expired |
| US4107874A | Sprouter | Emerging Cross-Sectional Technologies | 3 | Expired |
| USRE31416E | Electric signal transmitter for vibrating-wire sensor | General | 3 | Expired |
| US4348673A | Instrumentation system with electric signal transmitter | Emerging Cross-Sectional Technologies | 3 | Expired |
| USD784645S1 | Bucket liner | General | 3 | Active |
| US9289641B2 | Antigravity whole body exercise garments | Human Necessities | 2 | Active |
| US10143245B2 | Antigravity whole body exercise garments | Human Necessities | 0 | Active |
| US10010749B2 | Thoracic stabilizer | Human Necessities | 0 | Active |
| US11305876B2 | Aircraft cabin apparatus including personal electronic device holder | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US3952293A | Method and apparatus for displaying industrial process control parameters | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.