Inventor · Bietigheim, DE

Walter Kohl

22Patents
12h-index
24Co-inventors
81Inventor score

Filing activity: Oct 4, 1978 → Aug 9, 2001

Most-cited inventions

PatentTitleAreaCited byStatus
US5280232A Method and apparatus for voltage regulation depending on battery charge Electricity 252 Expired
US5160881A Alternator for a motor vehicle having a ventilator and device for monitoring and a controlling the ventilator Electricity 172 Expired
US6567476B2 Data synchronisation process, and transmission and reception interfaces Electricity 65 Expired
US6163138A Device for setting the output voltage in a three-phase alternator Emerging Cross-Sectional Technologies 36 Expired
US5198744A Apparatus and method for controlling the output power of a generator to maintain generator temperature below an allowed limiting value Electricity 30 Expired
US5233229A Device for supplying voltage in a motor vehicle having parallel connected generators Electricity 22 Expired
US5374886A Voltage regulator for an alternator and method of regulating voltage generated by an alternator Emerging Cross-Sectional Technologies 19 Expired
US5548202A Regulatable alternating device with means for determining final temperature Electricity 15 Expired
US4280161A Over-voltage protected, self-contained mobile electrical network system, particularly for automotive applications Electricity 14 Expired
US5602470A Circuit arrangement for starting detection of three-phase generator Physics 14 Expired
US5594321A Battery charging apparatus with fault detection Emerging Cross-Sectional Technologies 13 Expired
US4766031A Integral foam body and method of manufacturing the same Emerging Cross-Sectional Technologies 12 Expired
US5523672A Voltage-regulator for regulating the voltage of an alternator Emerging Cross-Sectional Technologies 10 Expired
US4247813A On-board vehicular electrical power supply system Electricity 9 Expired
US5013996A Voltage regulator for a generator Electricity 6 Expired
US6218814A Device for voltage supply with suppression of load response function during reduction of rpm Emerging Cross-Sectional Technologies 6 Expired
US5352929A Apparatus and method for regulating a generator of an internal combustion engine Emerging Cross-Sectional Technologies 6 Expired
US6333581A Alternator with exciting means arrangement Electricity 5 Expired
US6555930B1 Device for automatically detecting a generator type of a motor vehicle Electricity 4 Expired
US5144219A Voltage-regulator for generator Emerging Cross-Sectional Technologies 2 Expired
US5175412A Electrical control system for an electrically heated window in motor vehicle Electricity 1 Expired
US4977340A Device for protecting an electrical circuit against interference pulses Electricity 1 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.