LTG Lufttechnische Gesellschaft mit beschrankter Haftung
34Patents
0Active
34Granted
37Portfolio score
Filing activity: Dec 7, 1971 → Jun 20, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5279629A | Air handling apparatus and method for textile machines | Performing Operations; Transporting | 33 | Expired |
| US3974755A | Air outlet | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4200441A | Regenerative heat exchanger | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US5514193A | Air humidifier | Emerging Cross-Sectional Technologies | 23 | Expired |
| US3951623A | Method of and apparatus for cleaning filter boxes | Performing Operations; Transporting | 21 | Expired |
| US4904282A | Filter apparatus and method of operating same | Performing Operations; Transporting | 19 | Expired |
| US4162148A | Filtering apparatus | Performing Operations; Transporting | 17 | Expired |
| US4193779A | Air filtering apparatus | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5114444A | Filter arrangement including at least one drum-type filter | Performing Operations; Transporting | 14 | Expired |
| US5394734A | Apparatus for determining humidity concentration in a humidified air system | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5988843A | Method and device for conducting/distributing air and light | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4180390A | Textile machine including air cleaning apparatus | Textiles; Paper | 10 | Expired |
| US5460361A | Sheet stacker with brake | Performing Operations; Transporting | 10 | Expired |
| US5799770A | Method for the transfer of separated goods and transfer device | Performing Operations; Transporting | 9 | Expired |
| US4107910A | Double twisting machine | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5213196A | Support frame for a continuous conveyor installation | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US5497628A | Air conditioning process and device | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5690165A | Ventilation device for a space zone | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5564334A | Pin ovens and transfer devices therefor | Performing Operations; Transporting | 6 | Expired |
| US5647889A | Air handling apparatus and method for textile machines | Performing Operations; Transporting | 6 | Expired |
| US5803707A | Slide-in cross current ventilator | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5749156A | Drying apparatus for cans using heated air | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5579893A | Transfer device for products, in particular cans | Performing Operations; Transporting | 5 | Expired |
| US6129020A | Air exhaust device for printing machines | Performing Operations; Transporting | 4 | Expired |
| US5595282A | Article treatment apparatus | Performing Operations; Transporting | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.