PRATT & WHITNEY
18Patents
11Active
18Granted
46Portfolio score
Filing activity: Oct 31, 1986 → May 12, 2016 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5476363A | Method and apparatus for reducing stress on the tips of turbine or compressor blades | Emerging Cross-Sectional Technologies | 63 | Expired |
| US7192569B2 | Hydrogen generation with efficient byproduct recycle | Chemistry; Metallurgy | 53 | Expired |
| US4791575A | Method for generating axis control data for use in controlling a grinding machine and the like and system therefor | Physics | 29 | Expired |
| US6990798B2 | Hybrid inlet | Emerging Cross-Sectional Technologies | 14 | Expired |
| US9004154B2 | Combination fuel-oil and air-oil heat exchanger | Mechanical Engineering; Lighting; Heating | 10 | Active |
| US4831782A | Apparatus for grinding a workpiece | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8357070B2 | Method of compensating gear carrier bearing misalignment under load | Emerging Cross-Sectional Technologies | 5 | Active |
| US8376088B2 | Twin lubrication tank filling system | Emerging Cross-Sectional Technologies | 5 | Active |
| US4979928A | Belt pulley | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US8387357B2 | Recuperated bypass turbine engine | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US8356694B2 | Recirculating lubrication system with sealed lubrication oil storage | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8371521B2 | Low noise exhaust ducting system | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US4850146A | Apparatus for grinding a workpiece | Performing Operations; Transporting | 2 | Expired |
| US8727734B2 | Blade retainer clip | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10113561B2 | Secondary flow baffle for turbomachinery | Emerging Cross-Sectional Technologies | 1 | Active |
| US10125785B2 | Reduced stress rotor interface | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US8446284B2 | Low oil indication | Emerging Cross-Sectional Technologies | 1 | Active |
| US8657580B2 | Blade retainment system | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.