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Inventor
LEWIS HERBERT I
US
3 patents
⚠️ This page may combine multiple inventors who share the name “LEWIS HERBERT I”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ANGLO AMERICAN CLAYS CORP
2 patents
US4293097A
Oct 6, 1981
Method for brightening natural calcitic ores
ANGLO AMERICAN CLAYS CORP
15 citations
71
US4165840A
Aug 28, 1979
Method for brightening natural calcitic ores
ANGLO AMERICAN CLAYS CORP
11 citations
71
ECC AMERICA INC
1 patent
US4693427A
Sep 15, 1987
Method for improving handleability of calcined kaolin clay products
ECC AMERICA INC
21 citations
79