The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
3,864Patents
894Active
3,864Granted
52Portfolio score
Filing activity: Nov 14, 1962 → Aug 25, 2023 · 363 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5142932A | Flexible robotic arm | Emerging Cross-Sectional Technologies | 1,451 | Expired |
| US4445118A | Navigation system and method | Physics | 738 | Expired |
| US5499294A | Digital camera with apparatus for authentication of images produced from an image file | Electricity | 587 | Expired |
| US5904709A | Microwave treatment for cardiac arrhythmias | Human Necessities | 428 | Expired |
| US5038089A | Synchronized computational architecture for generalized bilateral control of robot arms | Physics | 393 | Expired |
| US7156189B1 | Self mountable and extractable ultrasonic/sonic anchor | Performing Operations; Transporting | 379 | Expired |
| US7191013B1 | Hand held device for wireless powering and interrogation of biomems sensors and actuators | Human Necessities | 378 | Expired |
| US5596150A | Capacitance probe for fluid flow and volume measurements | Physics | 378 | Expired |
| US5377100A | Method of encouraging attention by correlating video game difficulty with attention level | Human Necessities | 362 | Expired |
| US6254359A | Method for providing a jewel bearing for supporting a pump rotor shaft | Human Necessities | 349 | Expired |
| US4176662A | Apparatus for endoscopic examination | Human Necessities | 336 | Expired |
| US4553393A | Memory metal actuator | Mechanical Engineering; Lighting; Heating | 336 | Expired |
| US6183425A | Method and apparatus for monitoring of daily activity in terms of ground reaction forces | Human Necessities | 324 | Expired |
| US5311422A | General purpose architecture for intelligent computer-aided training | Physics | 322 | Expired |
| US5678306A | Method for reducing pumping damage to blood | Emerging Cross-Sectional Technologies | 309 | Expired |
| US5182641A | Composite video and graphics display for camera viewing systems in robotics and teleoperation | Electricity | 307 | Expired |
| US5193963A | Force reflecting hand controller | Performing Operations; Transporting | 306 | Expired |
| US6721728B2 | System, method and apparatus for discovering phrases in a database | Emerging Cross-Sectional Technologies | 302 | Expired |
| US5692882A | Axial pump | Emerging Cross-Sectional Technologies | 294 | Expired |
| US5991456A | Method of improving a digital image | Physics | 289 | Expired |
| US5527159A | Rotary blood pump | Emerging Cross-Sectional Technologies | 289 | Expired |
| US6292143A | Multi-mode broadband patch antenna | Electricity | 285 | Expired |
| US5327071A | Microprocessor control of multiple peak power tracking DC/DC converters for use with solar cell arrays | Emerging Cross-Sectional Technologies | 281 | Expired |
| US5123017A | Remote maintenance monitoring system | Emerging Cross-Sectional Technologies | 275 | Expired |
| US5430643A | Configuration control of seven degree of freedom arms | Physics | 273 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.