David W. Williams
17Patents
7h-index
15Co-inventors
63Inventor score
Filing activity: Apr 28, 1977 → May 18, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5129117A | Birth assist protection guard | Human Necessities | 166 | Expired |
| US5060327A | Labor grips for birthing bed | Human Necessities | 135 | Expired |
| US5377372A | Hospital bed castor control mechanism | Performing Operations; Transporting | 119 | Expired |
| US7487558B2 | Headboard for a pull-up-in-bed system | Human Necessities | 42 | Active |
| US4183422A | Underwater communications device | Physics | 16 | Expired |
| US4996917A | Apparatus for splitting closed shell pistachio nuts | Human Necessities | 12 | Expired |
| US7254842B2 | Self-examination device | Human Necessities | 7 | Expired |
| US4909140A | Apparatus for splitting closed shell pistachio nuts | Human Necessities | 6 | Expired |
| US4235940A | Method and apparatus for riddling bottled wines in cases | Chemistry; Metallurgy | 5 | Expired |
| US4980188A | Method for splitting closed shell pistachio nuts | Human Necessities | 3 | Expired |
| US4356208A | Method and apparatus for riddling bottled wines in cases | Chemistry; Metallurgy | 3 | Expired |
| US4961947A | Method for splitting closed shell pistachio nuts | Human Necessities | 2 | Expired |
| US4133568A | Lift device | Performing Operations; Transporting | 2 | Expired |
| US8209791B2 | Toilet leak alert | Fixed Constructions | 1 | Active |
| US4405997A | Apparatus for riddling bottled wines | Chemistry; Metallurgy | 1 | Expired |
| US11084109B2 | Cutting device | Performing Operations; Transporting | 0 | Active |
| US11926450B1 | Bag with surface attachment devices | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.