BBC Brown, Boveri & Company Ltd.
1,014Patents
1Active
1,014Granted
47Portfolio score
Filing activity: May 22, 1973 → Jun 27, 1991
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4197840A | Permanent magnet device for implantation | Human Necessities | 411 | Expired |
| US4216449A | Waveguide for the transmission of electromagnetic energy | Electricity | 244 | Expired |
| US4298448A | Electrophoretic display | Physics | 222 | Expired |
| US4408461A | Combustion chamber of a gas turbine with pre-mixing and pre-evaporation elements | Mechanical Engineering; Lighting; Heating | 113 | Expired |
| US4147204A | Compressed-air storage installation | Emerging Cross-Sectional Technologies | 99 | Expired |
| US4932861A | Process for premixing-type combustion of liquid fuel | Mechanical Engineering; Lighting; Heating | 93 | Expired |
| US4100745A | Thermal power plant with compressed air storage | Mechanical Engineering; Lighting; Heating | 88 | Expired |
| US4025164A | Liquid crystal display device for colored display of information with a selective polarizer | Physics | 81 | Expired |
| US4308476A | Bar windings for electrical machines | Emerging Cross-Sectional Technologies | 80 | Expired |
| US4507253A | Equipment for gassing a liquid and process for operating the equipment | Emerging Cross-Sectional Technologies | 80 | Expired |
| US4760485A | Zine oxide surge arresters | Electricity | 73 | Expired |
| US4587589A | Voltage limiting feed-through unit | Electricity | 71 | Expired |
| US4368135A | Anisotropic compounds with negative or positive DC-anisotropy and low optical anisotropy | Chemistry; Metallurgy | 70 | Expired |
| US4084217A | Alternating-current fed power supply | Emerging Cross-Sectional Technologies | 70 | Expired |
| US4106859A | Reflector with light-scattering surface for liquid-crystal displays and method for their manufacture | Emerging Cross-Sectional Technologies | 68 | Expired |
| US4424668A | Combined gas turbine and steam turbine power station | Emerging Cross-Sectional Technologies | 66 | Expired |
| US4518444A | Material which is at least partially made from a constituent having a one-way shape memory effect and process to produce said material | Emerging Cross-Sectional Technologies | 64 | Expired |
| US4121107A | Apparatus for automatic low-bacteria to aseptic filling and packing of foodstuffs | Performing Operations; Transporting | 63 | Expired |
| US4800363A | Method for data transmission via an electric distribution system and transmission system for carrying out the method | Emerging Cross-Sectional Technologies | 61 | Expired |
| US4148191A | Method for regulating the power output of a thermodynamic system operating on a closed gas cycle and apparatus for carrying out the method | Mechanical Engineering; Lighting; Heating | 61 | Expired |
| US4492432A | Homeotropic nematic display with internal reflector | Physics | 61 | Expired |
| US4837484A | High-power radiator | Electricity | 59 | Expired |
| US4298249A | Electro-optical display having an improved reflector and method of making | Physics | 58 | Expired |
| US4630436A | Air storage gas turbine power station with fluidized bed firing | Emerging Cross-Sectional Technologies | 58 | Expired |
| US4200817A | .DELTA.-Connected, two-layer, three-phase winding for an electrical machine | Emerging Cross-Sectional Technologies | 57 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.