Man Gutehoffnungshutte Aktiengesellschaft
125Patents
0Active
125Granted
41Portfolio score
Filing activity: Sep 23, 1983 → Nov 26, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4852996A | Process for gasifying coal | Emerging Cross-Sectional Technologies | 57 | Expired |
| US4969803A | Compressor unit | Electricity | 42 | Expired |
| US4831535A | Method of controlling the surge limit of turbocompressors | Mechanical Engineering; Lighting; Heating | 32 | Expired |
| US5613418A | Multiple-stage hydraulic cylinder | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US5259572A | Towing vehicle without draw tongue for towing aircraft | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4810157A | Tractor for maneuvering an airplane without a tow bar | Performing Operations; Transporting | 28 | Expired |
| US5480274A | Aircraft tug without tow bar | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5806299A | Process and apparatus for quickly switching over from premix combustion to diffusion combustion in a gas turbine | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4831534A | Method and apparatus for controlling turbocompressors to prevent | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US5624229A | Spiral housing for a turbomachine | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5051052A | Aircraft tractor without tow-bar | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4998855A | Equipment for storing and unstoring bulk material | Performing Operations; Transporting | 21 | Expired |
| US5054714A | Aircraft tractor without tow-bar with adjustable tow arms | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5490760A | Multishaft geared multishaft turbocompressor with return channel stages and radial expaner | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5320471A | Suspension and guide of a vertical conveyor in the discharge trunk of a ship unloader | Performing Operations; Transporting | 16 | Expired |
| US4704066A | Turbine or compressor guide blade and method of manufacturing same | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5611663A | Geared multishaft turbocompressor and geared multishaft radial expander | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4938658A | Method of reliably operating turbocompressors | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4848982A | Arrangement for cooling a synthetic gas in a quenching cooler | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4936741A | Method of regulation that prevents surge in a turbocompressor by initiating blow-off when necessary | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4836746A | Axial flow engine guide vane adjusting device | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4789298A | Method and apparatus for controlling the operation of a turbocompressor | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US5873329A | Refractory lining in the transition of a gasifier to the waste heat boiler | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5108263A | Method of optimizing the operation of two or more compressors in parallel or in series | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US5414886A | Pneumatic floor supports for portable platforms | Fixed Constructions | 13 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.