Hoval Interliz AG
6Patents
0Active
6Granted
27Portfolio score
Filing activity: Feb 11, 1980 → Sep 16, 1996
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6070657A | Heat exchanger tube for heating boilers | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4378837A | Heat exchanger | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4989502A | Weatherproofing doors for the air intake opening of ventilating systems | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4277337A | Deposit filtering apparatus for filtering turbid liquids | Performing Operations; Transporting | 5 | Expired |
| US4296712A | Two-chamber boiler for burner firing and solid fuel firing | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4624216A | Furnace for burning oil or gas | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.