Inventor · disambiguated record
William R. Ruhe, Jr.
Also filed as: RUHE JR WILLIAM · RUHE JR WILLIAM R · RUHE JR WILLIAM RAYMOND · RUHE WILLIAM
49 granted patents·8 pending applications·2,209 citations·filing 1989–2023
99Inventor score
Files withCHEVRON ORONITE CO22CHEVRON CHEM CO19CHEVRON RES & TECH6RUHE JR WILLIAM R3CHEVRON JAPAN LTD2
Top patents by PatentIndex Score
57 records- 0199US5334321AModified high molecular weight succinimidesCHEVRON RES & TECH·Filed 1993·Granted Aug 2, 1994·245 cites·37 claims
- 0299US5175225AProcess for preparing polymeric dispersants having alternating polyalkylene and succinic groupsCHEVRON RES & TECH·Filed 1989·Granted Dec 29, 1992·123 cites·12 claims
- 0398US5853434AFuel compositions having polyalkylene succinimides and preparation thereofCHEVRON CHEM CO·Filed 1997·Granted Dec 29, 1998·129 cites·6 claims
- 0498US5851965ADispersant compositions having polyalkylene succinimidesCHEVRON CHEM CO·Filed 1997·Granted Dec 22, 1998·126 cites·6 claims
- 0598US5792729ADispersant terpolymersCHEVRON CHEM CO·Filed 1996·Granted Aug 11, 1998·233 cites·16 claims
- 0698US5716912APolyalkylene succinimides and post-treated derivatives thereofCHEVRON CHEM CO·Filed 1996·Granted Feb 10, 1998·137 cites·10 claims
- 0797US8076275B2Reduced color molybdenum-containing composition and a method of making sameRUHE JR WILLIAM R·Filed 2005·Granted Dec 13, 2011·25 cites·8 claims
- 0897US5356552AChlorine-free lubricating oils having modified high molecular weight succinimidesCHEVRON RES & TECH·Filed 1993·Granted Oct 18, 1994·122 cites·74 claims
- 0997US5286799ATwo-step free radical catalyzed process for the preparation of alkenyl succinic anhydrideCHEVRON RES & TECH·Filed 1992·Granted Feb 15, 1994·113 cites·13 claims
- 1095US8067347B2Lubricating oil additive composition and method of making the sameRUHE JR WILLIAM R·Filed 2006·Granted Nov 29, 2011·33 cites·54 claims
- 1195US5849676APost-treated derivatives of polyalkylene succinimidesCHEVRON CHEM CO·Filed 1997·Granted Dec 15, 1998·58 cites·12 claims
- 1295US5319030AOne-step process for the preparation of alkenyl succinic anhydrideCHEVRON RES & TECH·Filed 1992·Granted Jun 7, 1994·112 cites·16 claims
- 1394US7928044B2Lubricating oil additive composition and method of making the sameCHEVRON ORONITE CO·Filed 2006·Granted Apr 19, 2011·13 cites·54 claims
- 1494US6451920B1Process for making polyalkylene/maleic anhydride copolymerCHEVRON CHEM CO·Filed 1999·Granted Sep 17, 2002·79 cites·30 claims
- 1594US5616668APolymeric dispersants having polyalkylene and succinic groupsCHEVRON CHEM CO·Filed 1995·Granted Apr 1, 1997·90 cites·11 claims
- 1693US7820604B2Lubricating oil additive composition and method of making the sameCHEVRON ORONITE CO·Filed 2006·Granted Oct 26, 2010·12 cites·51 claims
- 1793US6962896B2Reduced color molybdenum-containing composition and a method of making sameCHEVRON ORONITE CO·Filed 2002·Granted Nov 8, 2005·37 cites·17 claims
- 1893US6906011B2Polymeric dispersants prepared from copolymers of low molecular weight polyisobutene and unsaturated acidic reagentCHEVRON ORONITE CO·Filed 2001·Granted Jun 14, 2005·43 cites·46 claims
- 1993US5625004ATwo-step thermal process for the preparation of alkenyl succinic anhydrideCHEVRON RES & TECH·Filed 1992·Granted Apr 29, 1997·56 cites·13 claims
- 2092US5565528APolymeric dispersants having polyalkylene and succinic groupsCHEVRON CHEM CO·Filed 1995·Granted Oct 15, 1996·69 cites·3 claims
- 2189US7858566B2Lubricating oil additive composition and method of making the sameCHEVRON ORONITE CO·Filed 2006·Granted Dec 28, 2010·8 cites·64 claims
- 2289US7816309B2Lubricating oil additive composition and method of making the sameCHEVRON ORONITE CO·Filed 2006·Granted Oct 19, 2010·8 cites·49 claims
- 2388US7820605B2Lubricating oil additive composition and method of making the sameCHEVRON ORONITE CO·Filed 2006·Granted Oct 26, 2010·9 cites·66 claims
- 2487US7745541B2Lubricating oil additive composition and method of making the sameCHEVRON ORONITE CO·Filed 2005·Granted Jun 29, 2010·7 cites·39 claims
- 2587US6358892B1Polyalkylene succinimides and post-treated derivatives thereofCHEVRON CHEM CO·Filed 1998·Granted Mar 19, 2002·47 cites·5 claims
- 2686US6958409B1Process for reduced crude sediment in metal salts of hydrocarbyl dithiophosphoric acidCHEVRON ORONITE CO·Filed 2004·Granted Oct 25, 2005·16 cites·26 claims
- 2786US6156850AProcess for making polyalkenyl derivative of an unsaturated acidic reagentCHEVRON CHEM CO·Filed 1998·Granted Dec 5, 2000·51 cites·14 claims
- 2884US8455568B2Lubricating oil additive composition and method of making the sameRUHE JR WILLIAM R·Filed 2008·Granted Jun 4, 2013·5 cites·56 claims
- 2983US6617396B1Process for making polyalkylene/maleic anhydride copolymerCHEVRON ORONITE CO·Filed 2000·Granted Sep 9, 2003·17 cites·17 claims
- 3081US7091306B2Process for preparing polyalkenylsuccinimidesCHEVRON ORONITE SA·Filed 2003·Granted Aug 15, 2006·24 cites·32 claims
- 3181US6015776APolyalkylene polysuccinimides and post-treated derivatives thereofCHEVRON CHEM CO·Filed 1998·Granted Jan 18, 2000·29 cites·18 claims
- 3279US9487731B2Functionalized olefin copolymers with monoamine terminated polyether and lubricating oil compositionsCHEVRON ORONITE CO·Filed 2015·Granted Nov 8, 2016·1 cites·12 claims
- 3378US7745542B2Lubricating oil additive composition and method of making the sameCHEVRON ORONITE CO·Filed 2006·Granted Jun 29, 2010·3 cites·46 claims
- 3478US5872083APost-treated derivatives of polyalkylene succinimidesCHEVRON CHEM CO·Filed 1997·Granted Feb 16, 1999·24 cites·10 claims
- 3575US12331260B2Ashless additive compositionCHEVRON ORONITE CO·Filed 2022·Granted Jun 17, 2025·0 cites·15 claims
- 3675US5728656ALower-ash lubricating oil having ultra-neutral zinc dialkyldithiophosphatesCHEVRON CHEM CO·Filed 1997·Granted Mar 17, 1998·27 cites·12 claims
- 3770US6146431APolyalkylene polysuccinimides and post-treated derivatives thereofCHEVRON CHEM CO·Filed 1999·Granted Nov 14, 2000·18 cites·5 claims
- 3868US8183189B2Preparation of a sulfurized molybdenum amide complex and additive compositions having low residual active sulfurCHEN QUNLAI·Filed 2009·Granted May 22, 2012·4 cites·22 claims
- 3966US9487730B2Functionalized olefin copolymers with monoamine terminated polyether and lubricating oil compositionsCHEVRON ORONITE CO·Filed 2015·Granted Nov 8, 2016·0 cites·18 claims
- 4066US2024093115A1Ashless additive compositionCHEVRON ORONITE CO·Filed 2021·Application pending·0 cites
- 4163US5821205APolyalkylene succinimides and post-treated derivatives thereofCHEVRON CHEM CO·Filed 1995·Granted Oct 13, 1998·13 cites·10 claims
- 4261US9994786B2Polyester dispersants, synthesis and use thereofCHEVRON ORONITE CO·Filed 2016·Granted Jun 12, 2018·0 cites·30 claims
- 4360US6107450APolyalkylene succinimides and post-treated derivatives thereofCHEVRON CHEM CO·Filed 1998·Granted Aug 22, 2000·16 cites·25 claims
- 4459US9347015B2Functionalized olefin copolymers with monoamine terminated polyether lubricating oil compositionsRUHE JR WILLIAM RAYMOND·Filed 2012·Granted May 24, 2016·0 cites·15 claims
- 4558US12391898B2Friction modifier systemCHEVRON JAPAN LTD·Filed 2021·Granted Aug 19, 2025·0 cites·20 claims
- 4658US9957461B2Polyester dispersants, synthesis and use thereofCHEVRON ORONITE CO·Filed 2017·Granted May 1, 2018·0 cites·16 claims
- 4757US2025101337A1Lubricating oil compositionCHEVRON JAPAN LTD·Filed 2023·Application pending·0 cites
- 4856US2010160192A1lubricating oil additive composition and method of making the sameChevron Oronite LLC·Filed 2008·Application pending·0 cites
- 4955US10815446B2Dispersants, method of making, and using sameCHEVRON ORONITE CO·Filed 2018·Granted Oct 27, 2020·0 cites·16 claims
- 5050US2010160198A1Friction modifiers and/or wear inhibitors derived from hydrocarbyl amines and cyclic carbonatesCHEVRON ORONITE CO·Filed 2008·Application pending·0 cites
Showing the top 50 of 57 patent records by PatentIndex Score.
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