Patent assignee · CH · COMPANY

Asea Brown Boveri, S.A.

952Patents
1Active
952Granted
45Portfolio score

Filing activity: May 26, 1987 → Jul 1, 2009 · 1 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US5517378A Direct-current breaker for high power for connection into a direct-current carrying high-voltage line Electricity 243 Expired
US5117346A Convertor plant roller contact connector for convertor plant Electricity 195 Expired
US4942313A Method for detecting a current flowing over the human body between a forward and a return conductor and a circuit configuration for carrying out the method Electricity 144 Expired
US5978220A Liquid cooling device for a high-power semiconductor module Electricity 132 Expired
US5382938A PTC element Electricity 117 Expired
US4830569A Industrial robot having a detachable electrical connection between housing on robot arm and tool holder Emerging Cross-Sectional Technologies 116 Expired
US5013959A High-power radiator Electricity 103 Expired
US5536079A Cabinet Electricity 103 Expired
US5030804A Contact arrangement for electric switching devices Electricity 95 Expired
US6269624A Method of operating a power plant with recycled CO2 Emerging Cross-Sectional Technologies 94 Expired
US5034288A Arrangement of fuel cells based on a high-temperature solid electrolyte of stabilized zirconium oxide for achieving maximum possible power Emerging Cross-Sectional Technologies 89 Expired
US5164678A Process for compensating nonlinearities in an amplifier circuit Electricity 79 Expired
US5006758A High-power radiator Electricity 76 Expired
US5782626A Airblast atomizer nozzle Mechanical Engineering; Lighting; Heating 73 Expired
US5079105A Device for conversion of chemical energy from hydrocarbons into electric energy by an electrochemical high-temperature process Emerging Cross-Sectional Technologies 72 Expired
US5796568A Current limiter device Electricity 70 Expired
US4900581A Method for producing metal films Chemistry; Metallurgy 68 Expired
US5977605A SiC Semiconductor device comprising a pn Junction with a voltage absorbing edge Emerging Cross-Sectional Technologies 67 Expired
US4990053A Device for extending the performances of a radial compressor Emerging Cross-Sectional Technologies 65 Expired
US5705853A Power semiconductor module Electricity 60 Expired
US4878142A High resistance ground fault protection Electricity 59 Expired
US5784889A Device for damping thermoacoustic pressure vibrations Mechanical Engineering; Lighting; Heating 59 Expired
US5049777A High-power radiator Electricity 59 Expired
US5021376A Method for preparing a ceramic suspension Chemistry; Metallurgy 59 Expired
US4967561A Combustion chamber of a gas turbine and method of operating it Mechanical Engineering; Lighting; Heating 58 Expired

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.