Inventor

RUHE JR WILLIAM R

US41 patents

⚠️ This page may combine multiple inventors who share the name “RUHE JR WILLIAM R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RUHE JR WILLIAM R

CHEVRON CHEM CO

Fuel compositions having polyalkylene succinimides and preparation thereof

Dispersant compositions having polyalkylene succinimides

Dispersant terpolymers

Polyalkylene succinimides and post-treated derivatives thereof

Process for making polyalkylene/maleic anhydride copolymer

Polyalkylene succinimides and post-treated derivatives thereof

Post-treated derivatives of polyalkylene succinimides

Polymeric dispersants having polyalkylene and succinic groups

Polymeric dispersants having polyalkylene and succinic groups

Process for making polyalkenyl derivative of an unsaturated acidic reagent

Polyalkylene polysuccinimides and post-treated derivatives thereof

Polyalkylene polysuccinimides and post-treated derivatives thereof

Post-treated derivatives of polyalkylene succinimides

Lower-ash lubricating oil having ultra-neutral zinc dialkyldithiophosphates

Polyalkylene succinimides and post-treated derivatives thereof

Polyalkylene succinimides and post-treated derivatives thereof

Cross-linked succinimides from an acid derivative, a polyamine, and a polycarboxylic acid derivative

Polymeric dispersants

Lubricating oils having carbonated sulfurized metal alkyl phenates and carbonated metal alkyl aryl sulfonates

CHEVRON ORONITE CO

Reduced color molybdenum-containing composition and a method of making same

Process for making polyalkylene/maleic anhydride copolymer

Polymeric dispersants prepared from copolymers of low molecular weight polyisobutene and unsaturated acidic reagent

Lubricating oil additive composition and method of making the same

Lubricating oil additive composition and method of making the same

Lubricating oil additive composition and method of making the same

Lubricating oil additive composition and method of making the same

Lubricating oil additive composition and method of making the same

Process for reduced crude sediment in metal salts of hydrocarbyl dithiophosphoric acid

Lubricating oil additive composition and method of making the same

Lubricating oil additive composition and method of making the same

CHEVRON RES & TECH

Modified high molecular weight succinimides

One-step process for the preparation of alkenyl succinic anhydride

Two-step free radical catalyzed process for the preparation of alkenyl succinic anhydride

Process for preparing polymeric dispersants having alternating polyalkylene and succinic groups

Chlorine-free lubricating oils having modified high molecular weight succinimides

Two-step thermal process for the preparation of alkenyl succinic anhydride

RUHE JR WILLIAM R

Reduced color molybdenum-containing composition and a method of making same

Lubricating oil additive composition and method of making the same

Lubricating oil additive composition and method of making the same

CHEVRON ORONITE SA

Process for preparing polyalkenylsuccinimides

CHEN QUNLAI

Preparation of a sulfurized molybdenum amide complex and additive compositions having low residual active sulfur