MTU Motoren-und Turbinen-Union
34Patents
0Active
34Granted
37Portfolio score
Filing activity: Dec 15, 1975 → Dec 3, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4709546A | Cooled gas turbine operable with a controlled cooling air quantity | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4860716A | Multi-cylinder diesel internal combustion engine with low compression ratio in the cylinders | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US4420288A | Device for the reduction of secondary losses in a bladed flow duct | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4842197A | Fuel injection apparatus and associated method | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US4981502A | Oil-air separator | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US5650909A | Method and apparatus for determining the armature impact time when a solenoid valve is de-energized | Electricity | 30 | Expired |
| US4062182A | Combustion chamber for gas turbine engines | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4426966A | Precombustion chamber in the cylinder head of a diesel engine | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4460311A | Apparatus for minimizing and maintaining constant the blade tip clearance of axial-flow turbines in gas turbine engines | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US6352263B1 | Brush seals with bristles arranged at an angle | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5343696A | Thrust reverser for a propfan engine | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US5069194A | Control of a charged, piston internal combustion engine having a plurality of exhaust gas turbochargers | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4548125A | Piston arrangement, particularly for an internal combustion engine | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5752805A | Brush seal for turbo-engines | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5033542A | Spacer supports for tubes of a matrix of a heat exchanger | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5856034A | Method and device for operating a fuel cell system | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4869211A | Lubricating oil channel | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US5326647A | Abradable layer for a turbo-engine and a manufacturing process | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4184720A | Air-supported bearing for turbine engines | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5094290A | Seal means for preventing flow of hot gases through a gap | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4340620A | Method for activating titanium surfaces for subsequent plating with metallic coatings | Chemistry; Metallurgy | 7 | Expired |
| US4720979A | Air supply bushing arrangement for a gas turbine engine combustion chamber | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5001088A | Method for producing porous form bodies | Chemistry; Metallurgy | 7 | Expired |
| US5523165A | Component with protective arrangement to prevent aluminizing or chromizing during gas diffusion coating | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5141769A | Method for applying wear-resistant dispersion coatings | Chemistry; Metallurgy | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.