Inventor
ESPER FRIEDRICH
9 patents
⚠️ This page may combine multiple inventors who share the name “ESPER FRIEDRICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BOSCH GMBH ROBERT
8 patentsUS4339320AJul 13, 1982
Heated gas composition sensor structure
BOSCH GMBH ROBERT30 citations92
US4320080AMar 16, 1982
Method to manufacture soft magnetic pressed bodies
BOSCH GMBH ROBERT31 citations92
US4418661ADec 6, 1983
Glow plug, particularly for diesel engine
BOSCH GMBH ROBERT42 citations90
US4334974AJun 15, 1982
Electrochemical oxygen sensor, particularly for use with exhaust gases of internal combustion engines, and especially for polarographic application
BOSCH GMBH ROBERT55 citations90
US4019914AApr 26, 1977
Method of manufacturing α-alumina
BOSCH GMBH ROBERT38 citations86
US4356571ANov 2, 1982
Prosthetic device
BOSCH GMBH ROBERT25 citations79
US4539503ASep 3, 1985
Rapid-heating, high-temperature-stable spark plug for internal combustion engines
BOSCH GMBH ROBERT24 citations78
US4618351AOct 21, 1986
Device for cleaning of gases
BOSCH GMBH ROBERT9 citations73