Inventor · disambiguated record
Jack L. Karn
Also filed as: KARN JACK L · KARN JACK LEE
26 granted patents·816 citations·filing 1973–2004
97Inventor score
Files withLUBRIZOL CORP26
Top patents by PatentIndex Score
26 records- 0198US4266945AMolybdenum-containing compositions and lubricants and fuels containing themLUBRIZOL CORP·Filed 1979·Granted May 12, 1981·97 cites·21 claims
- 0296US5484542ASulfurized overbased compositionsLUBRIZOL CORP·Filed 1994·Granted Jan 16, 1996·95 cites·48 claims
- 0393US5688751ASalicylate salts as lubricant additives for two-cycle enginesLUBRIZOL CORP·Filed 1996·Granted Nov 18, 1997·72 cites·20 claims
- 0491US6310011B1Overbased metal salts useful as additives for fuels and lubricantsLUBRIZOL CORP·Filed 1994·Granted Oct 30, 2001·77 cites·42 claims
- 0591US4744920ABorated overbased materialLUBRIZOL CORP·Filed 1986·Granted May 17, 1988·70 cites·32 claims
- 0690US3951830ABasic metal salts of sulfur- and methylene-bridged polyphenol compositions, and epoxide-reacted derivatives thereof, and lubricants containing themLUBRIZOL CORP·Filed 1973·Granted Apr 20, 1976·28 cites·44 claims
- 0789US4627928ABasic non-carbonated magnesium compositions and fuel, lubricant and additive concentrate compositions containing sameLUBRIZOL CORP·Filed 1985·Granted Dec 9, 1986·55 cites·44 claims
- 0887US5614480ALubricating compositions and concentratesLUBRIZOL CORP·Filed 1994·Granted Mar 25, 1997·41 cites·72 claims
- 0983US5490945ALubricating compositions and concentratesLUBRIZOL CORP·Filed 1994·Granted Feb 13, 1996·34 cites·74 claims
- 1083US5486300ALubricating compositionsLUBRIZOL CORP·Filed 1994·Granted Jan 23, 1996·32 cites·45 claims
- 1183US5202036ADiesel lubricants and methodsLUBRIZOL CORP·Filed 1992·Granted Apr 13, 1993·35 cites·37 claims
- 1281US4021419ABasic metal salts of sulfur- and methylene-bridged poly-phenol compositions, and epoxide-reacted derivatives thereof, and lubricants containing themLUBRIZOL CORP·Filed 1975·Granted May 3, 1977·22 cites·8 claims
- 1376US5562864ALubricating compositions and concentratesLUBRIZOL CORP·Filed 1994·Granted Oct 8, 1996·26 cites·64 claims
- 1475US5259966ALow chlorine overbased calcium saltsLUBRIZOL CORP·Filed 1992·Granted Nov 9, 1993·29 cites·20 claims
- 1567US7238651B2Process for preparing an overbased detergentLUBRIZOL CORP·Filed 2004·Granted Jul 3, 2007·9 cites·21 claims
- 1667US5464548ALubricants, functional fluid and grease compositions containing sulfite or sulfate overbased metal salts and methods of using the sameLUBRIZOL CORP·Filed 1994·Granted Nov 7, 1995·19 cites·32 claims
- 1766US5449470AOverbased alkali salts and methods for making sameLUBRIZOL CORP·Filed 1994·Granted Sep 12, 1995·18 cites·56 claims
- 1858US4973789ALower alkene polymersLUBRIZOL CORP·Filed 1987·Granted Nov 27, 1990·11 cites·15 claims
- 1954US5268520ALower alkene polymersLUBRIZOL CORP·Filed 1991·Granted Dec 7, 1993·9 cites·8 claims
- 2049US5108631AMethod of overbasing with a hydroxy sulfonic acid copromoterLUBRIZOL CORP·Filed 1990·Granted Apr 28, 1992·7 cites·15 claims
- 2147US4982026ALower alkene polymersLUBRIZOL CORP·Filed 1990·Granted Jan 1, 1991·7 cites·31 claims
- 2244USH1536HOverbased materials in ester mediaLUBRIZOL CORP·Filed 1995·Granted Jun 4, 1996·9 cites·26 claims
- 2342US5250204ASulfite overbased products and processLUBRIZOL CORP·Filed 1992·Granted Oct 5, 1993·4 cites·56 claims
- 2438US4775490AMagnesium overbasing processLUBRIZOL CORP·Filed 1987·Granted Oct 4, 1988·5 cites·23 claims
- 2535US5173203AMagnesium overbasing processLUBRIZOL CORP·Filed 1991·Granted Dec 22, 1992·3 cites·24 claims
- 2632US5032299AMagnesium overbasing processLUBRIZOL CORP·Filed 1989·Granted Jul 16, 1991·2 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →