PRATT & WHITNEY CANADA CORP.
2,833Patents
2,481Active
2,833Granted
67Portfolio score
Filing activity: Jan 21, 1983 → Dec 11, 2024 · 352 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6936948B2 | Electric machine having an integrally continuous stator winding and stator slot bridges | Emerging Cross-Sectional Technologies | 1,172 | Expired |
| US7583063B2 | Architecture for electric machine | Electricity | 1,127 | Active |
| US8056232B2 | Method for manufacturing of fuel nozzle floating collar | Emerging Cross-Sectional Technologies | 203 | Active |
| US6895741B2 | Differential geared turbine engine with torque modulation capability | Emerging Cross-Sectional Technologies | 160 | Expired |
| US8091371B2 | Mid turbine frame for gas turbine engine | Mechanical Engineering; Lighting; Heating | 134 | Active |
| US8061969B2 | Mid turbine frame system for gas turbine engine | Mechanical Engineering; Lighting; Heating | 129 | Active |
| US5163809A | Spiral wound containment ring | Emerging Cross-Sectional Technologies | 121 | Expired |
| US6289677A | Gas turbine fuel injector | Mechanical Engineering; Lighting; Heating | 114 | Expired |
| US10590867B2 | Method of operating an engine assembly | Emerging Cross-Sectional Technologies | 103 | Active |
| US7043898B2 | Combined exhaust duct and mixer for a gas turbine engine | Emerging Cross-Sectional Technologies | 103 | Expired |
| US6408258B1 | Engine monitoring display for maintenance management | Performing Operations; Transporting | 102 | Expired |
| US6651929B2 | Passive cooling system for auxiliary power unit installation | Emerging Cross-Sectional Technologies | 97 | Expired |
| US7104918B2 | Compact epicyclic gear carrier | Mechanical Engineering; Lighting; Heating | 96 | Expired |
| US6652222B1 | Fan case design with metal foam between Kevlar | Mechanical Engineering; Lighting; Heating | 87 | Expired |
| US6003808A | Maintenance and warranty control system for aircraft | Physics | 87 | Expired |
| US7775044B2 | Low volumetric compression ratio integrated turbo-compound rotary engine | Emerging Cross-Sectional Technologies | 85 | Expired |
| US5738490A | Gas turbine engine shroud seals | Mechanical Engineering; Lighting; Heating | 82 | Expired |
| US6735954B2 | Offset drive for gas turbine engine | Emerging Cross-Sectional Technologies | 80 | Expired |
| US7144349B2 | Gas turbine gearbox | Emerging Cross-Sectional Technologies | 79 | Expired |
| US6855089B2 | Reduced twist carrier | Emerging Cross-Sectional Technologies | 79 | Expired |
| US6077035A | Deflector for controlling entry of cooling air leakage into the gaspath of a gas turbine engine | Emerging Cross-Sectional Technologies | 76 | Expired |
| US6899518B2 | Turbine shroud segment apparatus for reusing cooling air | Mechanical Engineering; Lighting; Heating | 75 | Expired |
| US5988975A | Gas turbine engine shroud seals | Mechanical Engineering; Lighting; Heating | 75 | Expired |
| US8371127B2 | Cooling air system for mid turbine frame | Mechanical Engineering; Lighting; Heating | 74 | Active |
| US7100358B2 | Turbine exhaust case and method of making | Emerging Cross-Sectional Technologies | 73 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.