Inventor · disambiguated record
Leonard A. Matthews
Also filed as: MATTHEWS LEONARD · MATTHEWS LEONARD A · MATTHEWS LEONARD ANTHONY
9 granted patents·114 citations·filing 1988–2000
89Inventor score
Top patents by PatentIndex Score
9 records- 0178US6444625B1High viscosity overbased sulfonate detergent and marine cylinder oils containing sameCROMPTON CORP·Filed 2000·Granted Sep 3, 2002·16 cites·32 claims
- 0275US5235067AContinuous process for alkenyl succinimidesTEXACO INC·Filed 1989·Granted Aug 10, 1993·13 cites·2 claims
- 0370US5792732ALubricants with linear alkaryl overbased detergentsETHYL ADDITIVES CORP·Filed 1997·Granted Aug 11, 1998·29 cites·6 claims
- 0460US4879053AProcess for preparing overbased calcium sulfonatesTEXACO INC·Filed 1988·Granted Nov 7, 1989·14 cites·7 claims
- 0554US5147414AProcess for producing ori control additivesTEXACO INC·Filed 1989·Granted Sep 15, 1992·11 cites·3 claims
- 0651US4997584AProcess for preparing improved overbased calcium sulfonateTEXACO INC·Filed 1990·Granted Mar 5, 1991·11 cites·11 claims
- 0745US5108630AProcess for overbasing sulfonates comprising two separate additions of calcium oxideTEXACO INC·Filed 1990·Granted Apr 28, 1992·8 cites·2 claims
- 0842US4929373AProcess for preparing overbased calcium sulfonatesTEXACO INC·Filed 1989·Granted May 29, 1990·7 cites·8 claims
- 0937US6239084B1Viscosity drift control in overbased detergentsCROMPTON CORP·Filed 1999·Granted May 29, 2001·5 cites·28 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →