Inventor · disambiguated record
Herbert I. Lewis
Also filed as: LEWIS HERBERT I
3 granted patents·47 citations·filing 1978–1985
72Inventor score
Top patents by PatentIndex Score
3 records- 0172US4293097AMethod for brightening natural calcitic oresANGLO AMERICAN CLAYS CORP·Filed 1979·Granted Oct 6, 1981·15 cites·17 claims
- 0268US4693427AMethod for improving handleability of calcined kaolin clay productsECC AMERICA INC·Filed 1985·Granted Sep 15, 1987·21 cites·9 claims
- 0365US4165840AMethod for brightening natural calcitic oresANGLO AMERICAN CLAYS CORP·Filed 1978·Granted Aug 28, 1979·11 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →