Inventor
PAHLMAN JOHN E
US8 patents
⚠️ This page may combine multiple inventors who share the name “PAHLMAN JOHN E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
US INTERIOR
6 patentsUS5196401AMar 23, 1993
Method of enhancing rock fragmentation and extending drill bit life
US INTERIOR17 citations70
US4959164ASep 25, 1990
Rock fragmentation method
US INTERIOR13 citations70
US4765415AAug 23, 1988
Isoelectric drilling method
US INTERIOR16 citations67
US4138465AFeb 6, 1979
Selective recovery of nickel, cobalt, manganese from sea nodules with sulfurous acid
US INTERIOR11 citations65
US4306905ADec 22, 1981
Production of ferrochromium alloys
US INTERIOR3 citations61
US4208379AJun 17, 1980
Recovery of metals from Atlantic sea nodules
US INTERIOR5 citations61