Theodore B. Hill
32Patents
19h-index
25Co-inventors
81Inventor score
Filing activity: Dec 22, 1975 → Nov 20, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6651658B1 | Portable oxygen concentration system and method of using the same | Performing Operations; Transporting | 295 | Expired |
| US6629525B2 | Portable oxygen concentration system and method of using the same | Performing Operations; Transporting | 177 | Expired |
| US5593478A | Fluid fractionator | Performing Operations; Transporting | 134 | Expired |
| US6698423B1 | Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator | Emerging Cross-Sectional Technologies | 131 | Expired |
| US5979440A | Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator | Emerging Cross-Sectional Technologies | 129 | Expired |
| US6311719A | Rotary valve assembly for pressure swing adsorption system | Emerging Cross-Sectional Technologies | 116 | Expired |
| US6712087B2 | Rotary valve assembly for pressure swing adsorption system | Emerging Cross-Sectional Technologies | 105 | Expired |
| US6681764B1 | Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator | Emerging Cross-Sectional Technologies | 101 | Expired |
| US6457485B2 | Rotary valve assembly for pressure swing absorption system | Emerging Cross-Sectional Technologies | 101 | Expired |
| US6651653B1 | Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator | Emerging Cross-Sectional Technologies | 90 | Expired |
| US5730778A | Fluid fractionator | Performing Operations; Transporting | 84 | Expired |
| US5268021A | Fluid fractionator | Emerging Cross-Sectional Technologies | 82 | Expired |
| US6471744B1 | Vacuum-pressure swing absorption fractionator and method of using the same | Performing Operations; Transporting | 71 | Expired |
| US5366541A | Fluid fractionator | Emerging Cross-Sectional Technologies | 64 | Expired |
| US4757804A | Device for electromagnetic treatment of living tissue | Human Necessities | 60 | Expired |
| US7455504B2 | High efficiency fluid movers | Mechanical Engineering; Lighting; Heating | 34 | Active |
| USRE43398E1 | Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator | General | 27 | Expired |
| US6671911B1 | Continuous wave cushioned support | Human Necessities | 27 | Expired |
| US4577870A | O-ring seal in channel with fluid pressure equalization means | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4915018A | Diaphragm piston assembly | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4887516A | Clamping arrangement for diaphragm piston assembly | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US7848035B2 | Single-use lens assembly | Human Necessities | 13 | Active |
| US3988044A | Continual quick service valve device with fast charging means | Performing Operations; Transporting | 8 | Expired |
| US4850654A | Freight brake emergency valve | Performing Operations; Transporting | 5 | Expired |
| US4951554A | Low stress diaphragm | Mechanical Engineering; Lighting; Heating | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.