Mechanical Technology Inc.
162Patents
0Active
162Granted
43Portfolio score
Filing activity: Feb 4, 1974 → Jul 1, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4353220A | Resonant piston compressor having improved stroke control for load-following electric heat pumps and the like | Mechanical Engineering; Lighting; Heating | 116 | Expired |
| US5193120A | Machine vision three dimensional profiling system | Physics | 115 | Expired |
| US3940608A | Fiber optic displacement measuring apparatus | Physics | 114 | Expired |
| US4478553A | Isothermal compression | Mechanical Engineering; Lighting; Heating | 81 | Expired |
| US4352269A | Stirling engine combustor | Mechanical Engineering; Lighting; Heating | 77 | Expired |
| US4362020A | Hermetic turbine generator | Mechanical Engineering; Lighting; Heating | 70 | Expired |
| US5228293A | Low temperature solar-to-electric power conversion system | Emerging Cross-Sectional Technologies | 68 | Expired |
| US4262975A | Compliant journal bearing with angular stiffness gradient | Mechanical Engineering; Lighting; Heating | 64 | Expired |
| US5760391A | Passive optical wavelength analyzer with a passive nonuniform optical grating | Physics | 63 | Expired |
| US4277113A | Composite material compliant bearing element | Emerging Cross-Sectional Technologies | 56 | Expired |
| US4974165A | Real time machining control system including in-process part measuring and inspection | Physics | 55 | Expired |
| US4827163A | Monocoil reciprocating permanent magnet electric machine with self-centering force | Electricity | 54 | Expired |
| US4434617A | Start-up and control method and apparatus for resonant free piston Stirling engine | Mechanical Engineering; Lighting; Heating | 54 | Expired |
| US5521448A | Damping for passive magnetic bearings | Mechanical Engineering; Lighting; Heating | 53 | Expired |
| US4387568A | Stirling engine displacer gas bearing | Mechanical Engineering; Lighting; Heating | 50 | Expired |
| US4344631A | Pressure insensitive lip seal | Performing Operations; Transporting | 47 | Expired |
| US4454720A | Heat pump | Mechanical Engineering; Lighting; Heating | 46 | Expired |
| US4067225A | Capacitance type non-contact displacement and vibration measuring device and method of maintaining calibration | Physics | 45 | Expired |
| US5703424A | Bias current control circuit | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US4227752A | Staged bearing surface compliance for hydrodynamic fluid bearing | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US4277112A | Stepped, split, cantilevered compliant bearing support | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US5451772A | Distributed fiber optic sensor | Physics | 44 | Expired |
| US4485678A | Rotor diagnostic and balancing system | Physics | 43 | Expired |
| US4296976A | Cross-plies support element for compliant bearings | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US4277111A | Support element for compliant hydrodynamic thrust bearing | Mechanical Engineering; Lighting; Heating | 42 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.