| Castrol Limited Patent applications |
| Patent application number | Title | Published |
|---|
| 20110287992 | MULTIFUNCTIONAL MULTIPLE GRAFT MONOMER LOW MOLECULAR WEIGHT POLYMER - The composition and preparation of multiple graft low molecular weight polymers useful as dispersants are described. The dispersants described are suitable for controlling sludge and varnish as well as soot. The product is useful as a lubricant additive and a fuel additive. | 11-24-2011 |
| 20110251112 | Graft Polymer and Related Methods and Compositions - The present invention relates to a graft polymer of (a) a polyalphaolefin having a weight average molecular weight of less than 15000 and a polydispersity of 1.1 to 10; (b) a nitrogenous, ethylenically unsaturated, aliphatic or aromatic, graftable monomer having from 2 to about 50 carbon atoms; and (c) an organo-metallic compound selected from organo-molybdenum, organo-titanium, organo-manganese compounds and mixtures thereof; a process for making the graft polymer; and a lubricating oil composition comprising a major amount of a base oil and a minor amount of the graft polymer. | 10-13-2011 |
| 20110245119 | Multiple Function Graft Polymer - The composition and preparation of multifunctional graft polymers useful as dispersants are described. The dispersants described are suitable for controlling sludge and varnish as well as soot, friction and wear. The product is useful as a lubricant additive. | 10-06-2011 |
| 20110082060 | Fire Resistant Lubricating Grease Composition - Fire resistant lubricating grease compositions resistant to self ignition and/or capable of self extinguishment when contacted with surfaces having temperatures of up to 9000 C are disclosed. The invention provides for grease compositions comprising (1) base oil (which can be mineral, vegetable, synthetic or combinations thereof), (2) at least one grease thickener (selected from calcium sulfonates or lithium-based soaps), and (3) water as major components. The invention also provides a method for the preparation of the grease composition and a method for lubrication of bearings, gears, surfaces and other lubricated components comprising use of the grease composition of the present invention. The grease compositions of this invention display excellent fire resistance properties and still have outstanding physical and performance characteristics for applications where temperatures and loads are high, shock loading is significant and in the presence of significant amounts of water. | 04-07-2011 |
| 20100200609 | Vehicle Fluid Dispensing Apparatus and Method of Use - This invention relates to a vehicle fluid dispensing apparatus and a method of use. The apparatus includes a plurality of motive force devices for fluid communication with a plurality of reservoirs. The apparatus also includes a plurality of metering devices in fluid communication with the motive force devices and a single nozzle in fluid communication with the plurality of motive force devices. | 08-12-2010 |
| 20090326756 | Method for determining the performance of motor vehicle consumables - A method for determining the performance of at least one motor vehicle consumable selected from the group consisting of engine lubricant, fuel and tyres, in a motor vehicle having an engine with at least one fuel injection valve, a lubricating system and a CANbus network comprising at least three network nodes, each operably connected to a computer, which method comprises: operating the vehicle whilst supplying the engine with the fuel through at least one fuel injection valve and lubricating the engine with the engine lubricant characterised in that: a first CANbus network node transmits to the computer, a signal indicative of the engine fuelling rate based upon the opening time of at least one of the fuel injection valves; one or more second CANbus network nodes transmit one or more signals to the computer indicative of one or more variables indicative of the power output of the engine; one or more third CANbus network nodes transmit one or more signals to the computer indicative of the vehicle operating conditions; the computer calculates a variable (Corrected Power Output) indicative of the power output of the engine corrected for the vehicle operating conditions using the one or more signals transmitted to the computer by the one or more second CANbus network nodes, the one or more signals transmitted to the computer by the one or more third CANbus network nodes and a predetermined algorithm; and the computer transmits and/or stores the Corrected Power Output and the signal indicative of the engine fuelling rate. | 12-31-2009 |
| 20090126469 | Method of Monitoring Fire Resistance of Hydraulic Fluids - A method of monitoring the fire resistance of hydraulic fluids involves measuring a property of the hydraulic fluid that changes as the hydraulic fluid is used; relating the measurement to the fire resistance of the hydraulic fluid; and if necessary, taking remedial action in order to improve the fire resistance of the hydraulic fluid. A suitable property is the molecular weight of polymer anti-mist additives such as polymethyl methacrylate and the fire resistance may be improved by adding to the hydraulic fluid, a concentrate of the polymer in a suitable solvent when the measured molecular weight falls below an acceptable value. | 05-21-2009 |
