Inventor
SCHROECK CALVIN W
US22 patents
⚠️ This page may combine multiple inventors who share the name “SCHROECK CALVIN W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LUBRIZOL CORP
20 patentsUS4904401AFeb 27, 1990
Lubricating oil compositions
LUBRIZOL CORP136 citations97
US4741848AMay 3, 1988
Boron-containing compositions, and lubricants and fuels containing same
LUBRIZOL CORP146 citations97
US4981602AJan 1, 1991
Lubricating oil compositions and concentrates
LUBRIZOL CORP66 citations96
US4959168ASep 25, 1990
Sulfurized compositions, and additive concentrates and lubricating oils containing same
LUBRIZOL CORP49 citations96
US4952328AAug 28, 1990
Lubricating oil compositions
LUBRIZOL CORP115 citations96
US4289635ASep 15, 1981
Process for preparing molybdenum-containing compositions useful for improved fuel economy of internal combustion engines
LUBRIZOL CORP101 citations96
US4417990ANov 29, 1983
Mixed metal salts/sulfurized phenate compositions and lubricants and functional fluids containing them
LUBRIZOL CORP75 citations94
US4308154ADec 29, 1981
Mixed metal salts and lubricants and functional fluids containing them
LUBRIZOL CORP97 citations94
US4263150AApr 21, 1981
Phosphite treatment of phosphorus acid salts and compositions produced thereby
LUBRIZOL CORP80 citations94
US5300242AApr 5, 1994
Metal overbased and gelled natural oils
LUBRIZOL CORP24 citations92
US4466895AAug 21, 1984
Metal salts of lower dialkylphosphorodithioic acids
LUBRIZOL CORP48 citations92
US5616816AApr 1, 1997
Tertiary alkyl alkylphenols and organic compositions containing same
LUBRIZOL CORP25 citations91
US4579666AApr 1, 1986
Phosphorus-containing metal salt/olefin compositions and reaction products of same with active sulfur
LUBRIZOL CORP13 citations74
US4507215AMar 26, 1985
Phosphorus-containing metal salt/olefin compositions and reaction products of same with active sulfur
LUBRIZOL CORP11 citations74
US4254257AMar 3, 1981
Amine salts of acidic microbial polysaccharides and their use in recovery of such polysaccharides
LUBRIZOL CORP11 citations74
US10913915B2Feb 9, 2021
Composition containing heterocyclic compounds and a method of lubricating an internal combustion engine
LUBRIZOL CORP2 citations73
US5508331AApr 16, 1996
Metal overbased and gelled natural oils
LUBRIZOL CORP7 citations73
US6002051ADec 14, 1999
Tertiary alkyl alkylphenols and organic compositions containing same
LUBRIZOL CORP11 citations72
US10550348B2Feb 4, 2020
Composition containing heterocyclic compounds and a method of lubricating an internal combustion engine
LUBRIZOL CORP0 citations52
US9982210B2May 29, 2018
Composition containing heterocyclic compounds and a method of lubricating an internal combustion engine
LUBRIZOL CORP0 citations52