BBC Aktiengesellschaft, Brown, Boveri & Cie
42Patents
0Active
42Granted
38Portfolio score
Filing activity: May 1, 1974 → Sep 25, 1989
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4654492A | Switch drive | Electricity | 166 | Expired |
| US4996117A | High temperature protective coating | Emerging Cross-Sectional Technologies | 48 | Expired |
| US4546052A | High-temperature protective layer | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4611752A | Method for bonding metallic structural elements | Performing Operations; Transporting | 25 | Expired |
| US4252415A | Liquid crystal cell and process for its production | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4566268A | Multifuel burner | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4606778A | Joining method | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4118935A | Regulation system for a steam turbine installation | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4207745A | Device for helium transfer between rotating and non-rotating members | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4675204A | Method of applying a protective layer to an oxide dispersion hardened superalloy | Chemistry; Metallurgy | 16 | Expired |
| US3949291A | Short HVDC transmission system with power factor control | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4688132A | Superconducting magnet system for operation at 13k | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4716812A | Hydraulic drive | Electricity | 11 | Expired |
| US4909984A | High temperature protective coating | Emerging Cross-Sectional Technologies | 10 | Expired |
| US3985988A | Electric circuit breaker assembly | Electricity | 10 | Expired |
| US4724534A | Method and apparatus for transmitting binary data signals by frequency shift keying | Electricity | 10 | Expired |
| US4943926A | Method for the analysis and synthesis of binary signals | Electricity | 9 | Expired |
| US4133026A | Method of starting up a high-voltage d-c inverter or transmission station in isolated or island operation | Emerging Cross-Sectional Technologies | 8 | Expired |
| US3946348A | Radiation resistant ducted superconductive coil | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4208692A | Method and apparatus for detecting fault currents in electrical networks | Performing Operations; Transporting | 7 | Expired |
| US4678876A | Isolating switch apparatus for a high-voltage switching system which may be insulated with SF.sub.6 gas | Electricity | 6 | Expired |
| US4503122A | High-temperature protection layer | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4625269A | High voltage D-C transmission power station with a generator transformer | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4500489A | High temperature protective coating alloy | Chemistry; Metallurgy | 5 | Expired |
| US4410488A | Powder metallurgical process for producing a copper-based shape-memory alloy | Chemistry; Metallurgy | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.