Darrell A. Richmond
53Patents
7h-index
28Co-inventors
72Inventor score
Filing activity: Oct 11, 1994 → May 8, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8978183B1 | Pocketed spring assembly | Human Necessities | 27 | Active |
| US7921561B2 | Bedding or seating product made with coil springs having unknotted end turns with bumps | Emerging Cross-Sectional Technologies | 23 | Active |
| US9943173B2 | Pocketed spring comfort layer and method of making same | Performing Operations; Transporting | 20 | Active |
| US6149143A | Spring structure for a mattress innerspring having coaxial coil units | Human Necessities | 15 | Expired |
| US10206515B1 | Pocketed spring assembly | Human Necessities | 11 | Active |
| US9332856B2 | Pocketed spring assembly comprising strings of springs of different heights and enhanced ventilation | Human Necessities | 10 | Active |
| US7805780B2 | Bedding foundation having nestable stackable components | Human Necessities | 8 | Active |
| USD575564S1 | Top portion of a spring core | General | 6 | Expired |
| USD880214S1 | Pocketed spring comfort layer | General | 6 | Active |
| USD574168S1 | End portion of a coil spring | General | 6 | Expired |
| US9345334B2 | Pocketed spring assembly comprising strings of springs having Y-shaped seams separating adjacent pockets | Human Necessities | 6 | Active |
| US8327475B2 | Bedding foundation having nestably stackable spring assembly welded to border wire with generally rectangular cross-section | Performing Operations; Transporting | 5 | Active |
| US8332974B2 | Bedding foundation having border wire with generally rectangular cross-section | Performing Operations; Transporting | 5 | Active |
| US7930777B2 | Bedding foundation having nestable stackable components | Human Necessities | 4 | Active |
| US8429779B2 | Bedding or seating product made with coil springs having unknotted end turns with bumps | Emerging Cross-Sectional Technologies | 4 | Active |
| US10512340B2 | Pocketed spring assembly comprising strings of springs with tabs | Human Necessities | 4 | Active |
| USD883002S1 | Continuous spring | General | 3 | Active |
| US9427090B2 | Pocketed spring assembly comprising strings of springs having Y-shaped seams | Human Necessities | 3 | Active |
| US9775442B2 | Pocketed spring assembly comprising strings of springs having non-linear separating seams | Human Necessities | 3 | Active |
| US7398568B1 | Bedding foundation | Human Necessities | 3 | Active |
| US8769748B2 | Spring core having border wire with generally rectangular cross-section | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US9066603B2 | Adjustable bedding foundation and process of making same | Emerging Cross-Sectional Technologies | 3 | Active |
| US8429772B2 | Coil spring having unknotted end turns with bumps | Emerging Cross-Sectional Technologies | 3 | Active |
| US10973339B2 | Pocketed spring comfort layer having at least one foam layer and method of making same | Performing Operations; Transporting | 3 | Active |
| US9370252B2 | Pocketed spring assembly | Human Necessities | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.