United States Department of Energy
4,039Patents
133Active
4,039Granted
51Portfolio score
Filing activity: Sep 24, 1945 → Jan 17, 2024 · 100 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5333422A | Lightweight extendable and retractable pole | Fixed Constructions | 1,474 | Expired |
| US4651734A | Electrosurgical device for both mechanical cutting and coagulation of bleeding | Human Necessities | 769 | Expired |
| US4381007A | Multipolar corneal-shaping electrode with flexible removable skirt | Human Necessities | 644 | Expired |
| US4075632A | Interrogation, and detection system | Physics | 540 | Expired |
| US4326529A | Corneal-shaping electrode | Human Necessities | 513 | Expired |
| US4234449A | Method of handling radioactive alkali metal waste | Physics | 468 | Expired |
| US4527005A | Spring loaded thermocouple module | Physics | 467 | Expired |
| US5120421A | Electrochemical sensor/detector system and method | Emerging Cross-Sectional Technologies | 437 | Expired |
| US4461691A | Organic conductive films for semiconductor electrodes | Emerging Cross-Sectional Technologies | 405 | Expired |
| US4833048A | Metal-sulfur type cell having improved positive electrode | Emerging Cross-Sectional Technologies | 297 | Expired |
| US5227042A | Catalyzed enzyme electrodes | Emerging Cross-Sectional Technologies | 276 | Expired |
| US5324948A | Autonomous mobile robot for radiologic surveys | Physics | 247 | Expired |
| US5096550A | Method and apparatus for spatially uniform electropolishing and electrolytic etching | Emerging Cross-Sectional Technologies | 213 | Expired |
| US4385661A | Downhole steam generator with improved preheating, combustion and protection features | Mechanical Engineering; Lighting; Heating | 205 | Expired |
| US4424491A | Automatic voltage imbalance detector | Emerging Cross-Sectional Technologies | 203 | Expired |
| US5313481A | Copper laser modulator driving assembly including a magnetic compression laser | Electricity | 200 | Expired |
| US4997804A | Low density, resorcinol-formaldehyde aerogels | Emerging Cross-Sectional Technologies | 194 | Expired |
| US4873218A | Low density, resorcinol-formaldehyde aerogels | Performing Operations; Transporting | 194 | Expired |
| US4905169A | Method and apparatus for simultaneously measuring a plurality of spectral wavelengths present in electromagnetic radiation | Physics | 187 | Expired |
| US4796198A | Method for laser-based two-dimensional navigation system in a structured environment | Physics | 184 | Expired |
| US5223043A | Current-matched high-efficiency, multijunction monolithic solar cells | Emerging Cross-Sectional Technologies | 181 | Expired |
| US4963012A | Passivation coating for flexible substrate mirrors | Physics | 176 | Expired |
| US4516632A | Microchannel crossflow fluid heat exchanger and method for its fabrication | Emerging Cross-Sectional Technologies | 174 | Expired |
| US4686979A | Excimer laser phototherapy for the dissolution of abnormal growth | Human Necessities | 168 | Expired |
| US6890497B2 | Method for extracting and sequestering carbon dioxide | Emerging Cross-Sectional Technologies | 164 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.