USD GROUP LLC
21Patents
1Active
21Granted
47Portfolio score
Filing activity: Mar 2, 1981 → Jan 31, 2022
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4414973A | Respirator face mask | Emerging Cross-Sectional Technologies | 355 | Expired |
| US4402316A | Breathing gas mask | Human Necessities | 230 | Expired |
| US4607398A | Strap and retainer for a divers mask | Emerging Cross-Sectional Technologies | 49 | Expired |
| US4498471A | First and second stage regulator system for breathing gas | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4523914A | Conformable buoyancy compensator | Performing Operations; Transporting | 38 | Expired |
| US4561853A | Buoyancy compensator, bladder, and process of manufacture | Performing Operations; Transporting | 33 | Expired |
| US4810134A | Single walled diver's buoyancy compensator | Performing Operations; Transporting | 32 | Expired |
| USD271246S | Combined respirator face piece and strap units | General | 31 | Expired |
| US4694772A | Diver's buoyancy compensator belt | Performing Operations; Transporting | 28 | Expired |
| USD296919S | Adjustable diver's belt | General | 26 | Expired |
| USD300340S | Buoyancy compensator with an adjustable strap | General | 22 | Expired |
| US4449655A | Combination backpack and gear bag | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4809550A | Digital diving meter | Physics | 16 | Expired |
| US4683881A | Breathing regulator mouthpiece | Emerging Cross-Sectional Technologies | 12 | Expired |
| USD283740S | First stage diving regulator | General | 10 | Expired |
| USD302393S | Diving meter | General | 10 | Expired |
| USD289505S | Two instrument dive console | General | 6 | Expired |
| US4387600A | Fiberoptic pressure gauge | Physics | 6 | Expired |
| USD271144S | Breathing gas mask | General | 4 | Expired |
| USD289384S | Three instrument dive console | General | 3 | Expired |
| US12006474B2 | Methods and apparatus for treating bitumen mixtures | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.