U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5100138

Motorized Mobile Boxing Robot

A simulation environment for the sport of boxing utilizing a robotic machine interface system which carries a person

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 508/569 - Sulfides (i.e., plural carbons bonded directly to a single sulfur atom or sulfur chain)


Subclass of Class 508 - Solid anti-friction devices, materials therefor, lubricant or separant compositions for moving solid surfaces, and miscellaneous mineral oil compositions
Definition: Compositions wherein the sulfur atom, or a chain of sulfur
No. of patents: 63
Last issue date: 04/19/2011


1    
NumberTitleIssue Date
7928045Stabilizing compositions for lubricants
A lubricant composition is disclosed that comprises lubricating oil and a mixture of at least two antioxidants, the first antioxidant being a substituted diphenylamine and/or a heterocyclic amine and the second antioxidant being a substituted phenol. Also disclosed ...
04/19/2011
7888299Extended drain, thermally stable, gear oil formulations
In its broadest concept, the present invention relates to an improved gear oil comprising: a) a base oil having a viscosity range of 4 to 32 cSt at 100° C.; b) a maximum level of hydrocarbyl polysulfide with a min...
02/15/2011
7244522Lubricant for magnetic recording medium and use thereof
A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a co...
07/17/2007
7195828Lubricant for magnetic recording medium and use thereof
A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a co...
03/27/2007
7056871Lubricating oil composition which decreases copper corrosion and method of making same
An oil-soluble additive composition and lubricating oil composition containing the same, comprising an organic sulfur-containing extreme pressure additive; a thiadiazole, wherein the thiadiazole does not contain a polycarboxylate moiety and the amount of dimercaptot...
06/06/2006
6878854Temporary antioxidants for Fischer-Tropsch products
The present invention relates to the use of antioxidants in Fischer Tropsch derived products. The antioxidants of the present invention are preferably temporary antioxidants that may be removed after the period in which oxidation is expected by techniques such as si...
04/12/2005
6872693Mineral gear oils and transmission fluids
This invention relates to mineral oil based gear oils and transmission fluids which comprise a major amount of a mineral oil having an iodine number of less than 9 and where at least 55% of the saturates are aliphatic, and gear oil or transmission fluid additives. I...
03/29/2005
6852680Dithiocarbamates containing alkylthio and hydroxy substituents
This invention relates to a low cost, wear inhibitor containing novel dithiocarbamates with alkylthio and hydroxy substituents that can be used to formulate low phosphorus lubricants. In addition to wear inhibition, the dithiocarbamate compositions of the invention ...
02/08/2005
6844300Low phosphorus clean gear formulations
Gear oils meeting GL-5 specifications are obtained by blending a base oil, a thermally stable phosphorus-containing anti-wear agent; and a metal-free sulfur-containing extreme-pressure agent; wherein the thermally stable phosphorus-containing anti-wear agent is pres...
01/18/2005
6797679Lubricant composition
Provided is a lubricant composition prepared by adding, to a base oil, (a) from 0.01 to 5% by mass, based on the composition, of a phosphate, (b) from 0.005 to 1% by mass of an amine salt of an acid phosphate and (c) from 0.01 to 1% by mass of a sulfur-containing ex...
09/28/2004
6774092Additive composition for gearbox oil
Disclosed is an additive composition that can be mixed with various types of basic oils to produce a lubricant that can meet the international standards of manual truck gearbox oils. A preferred embodiment includes various quantities of an isobutylene sulfide, zinc ...
08/10/2004
6689723Sulfide- and polysulfide-containing lubricating oil additive compositions and lubricating compositions containing the same
This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, at least one organic polysulfide comprising less than about 88% dihydrocarbyl trisulfide, from up to about 5% dihydrocarbyl disulfide, and mo...
02/10/2004
6645920Additive composition for industrial fluid
A lubricating oil composition containing in oxidation inhibitor package, a rust inhibitor and metal deactivator is used in industrial fluids. The oxidation package contains alkylated diphenylamines, substituted hydrocarbyl monosulphides and optionally ste...
11/11/2003
6573223Lubricating compositions with good thermal stability and demulsibility properties
The invention relates to a lubricating composition comprising: (a) at least one sulfur-free hydrocarbyl phosphoric acid ester or salt, (b) at least one sulfur-containing hydrocarbyl phosphoric acid or salt, (c) an organic polysulfide, (d) at least one dis...
06/03/2003
6551969Cutting method and cutting oil
A cutting method in which a solution is sprayed or jetted to a machining portion when machining by use of a water-insoluble cutting oil, wherein recovered liquid is collected and stored in one recovery tank, and separated into the water-insoluble cutting ...
04/22/2003
6548462Bisphenyl thiocompounds
The invention relates to bisphenyl thiocompounds of formula (I), wherein X1 to X5 independently represent H, Cl, F, OH, SH, R, --OR and --SR, wherein R is an organic radical with 1 to 18 C atoms, which can be an alkyl or alkenyl radi...
04/15/2003
6521571Trunk piston engine lubrication
A lubricant suitable for use in a trunk piston diesel engine characterised by a power output of 200 kW or greater. The trunk piston diesel engine may be for use in marine, power generation or rail traction applications. The lubricant comprises a basestock...
02/18/2003
6489271Combination of a sulfur compound and specific phosphorus compounds and their use in lubricating compositions, concentrates and greases
This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and (a) a extreme pressure improving amount of at least one sulfur compound, and an antiwear or an extreme pressure improving amount of the co...
12/03/2002
6432889Grease composition
A grease composition is disclosed which contains a lubricating base oil, and: (A) 2 to 30 wt % of a urea thickener, (B) 0.1 to 20 wt % of a sulfur-containing extreme pressure agent selected from the group consisting of dihydrocarbyl polysulfide, sulfurize...
08/13/2002
6376432Low friction grease for constant velocity universal joints, particularly plunging type joints that is compatible with silicone elastomer boots
A silicon elastomer compatible constant velocity joint grease comprises a urea grease composed of a lubricating oil and a urea thickener and an effective amount of a friction reducing additive package comprising vermiculite, molybdenum oxysulfide dithioca...
04/23/2002
6362136Compositions for extending seal life, and lubricants and functional fluids containing the same
This invention relates to compositions containing a sulfur containing antiwear/extreme pressure agent, basic nitrogen compound or a mixture thereof together with a hydrocarbyl mercaptan. The composition may additionally contain a phosphorus or boron antiw...
03/26/2002
6362139Air conditioning and refrigeration system using a sulfur containing polar compound
A method of improving the efficiency of an air conditioning and refrigeration system, comprising introducing into the system a mixture of a carrier with an energy transferring polar compound comprising a sulfur component; a novel additive in a polar compo...
03/26/2002
6268319Slide way lubricant composition, method of making and method of using same
A slide way lubricant composition includes at least (a) a hydrotreated petroleum having a viscosity of from about 10 cSt to about 250 cSt as measured at 40° C. and consisting predominately of hydrocarbons having from about 15 to about 50 carbon atoms per...
07/31/2001
6258760Grease composition for constant velocity joint
The present invention relates to a grease composition for a constant velocity joint, which has a low coefficient of friction to decrease the vibrations of CVJ, which comprises a base oil, a urea thickening agent, (A) a molybdenum dialkyldithiocarbamate, (...
07/10/2001
6127327Polymeric multifunctional lubricant additives
Described are products suitable as lubricant and fuel additives which are obtainable by reacting a polyunsaturated polymer, for example polybutadiene, polyisoprene, ring-opening polymerised polycyclooctenamer or polynorbomene, with at least one enophilic ...
10/03/2000
6063741Engine oil composition
An engine oil composition is composed of: (1) at least one oil selected from the group consisting of a mineral oil and a synthetic lubricant as a base oil; (2) a molybdenum dithiocarbamate in an amount of 50 to 2000 ppm by weight when calculated as molybd...
05/16/2000
5955404Lubricant and fuel compositions containing an organo-substituted diphenyl sulfide
Lubricant or fuel compositions comprising 1) an organo, ring-substituted diphenyl sulfide, e.g. a monoalkyldiphenyl sulfide; 2) a dispersant component comprising at least one polymer-substituted succinimide, succinamide and/or succinic acid ester in which...
09/21/1999
5942470Lubricant compositions
Gear oils and gear oil additive concentrates of enhanced positraction performance are described. They comprise: (i) at least one oil-soluble sulfur-containing extreme pressure or antiwear agent; (ii) at least one oil-soluble amine salt of a partial ester ...
08/24/1999
5851961Anti-settling lubricity agent for water/oil dispersion compositions
An oil in water dispersion composition is disclosed that comprises a mixture of water and (A) an overbased non-Newtonian colloidal disperse system comprising (1) solid metal-containing colloidal particles predispersed in (2) a disperse medium of at least one inert ...
12/22/1998
5763372Clean gear boron-free gear additive and method for producing same
The present invention relates to a clean gear boron-free gear additive employing a boron-free ashless dispersant, a sulfur source and a phosphorus source. More particularly, the preferred boron-free ashless dispersant is a hydrocarbyl succinimide. This ad...
06/09/1998
5622923Lubricating compositions, functional fluids and greases containing thiophosphorus esters or their salts with a oxyalkylene group, and methods of using the same
This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and at least one metal-free thiophosphorus acid ester, at least one amine salt of the thiophosphorus acid ester, or a mixture thereof, wherein...
04/22/1997
5595963Synergistic antioxidant combinations for lubricating oils
This invention provides synergistic combinations of dithioketals with hindered phenols, phosphite esters, or mixtures thereof. These combinations are useful antioxidants in lubricating oils....
01/21/1997
5556569Non-conventional overbased materials
Organic compounds having at least one hydrocarbyl group and a polar group containing at least one nitrogen, oxygen, or sulfur atom, being free from acidic hydrogen atoms and from functional groups which provide such organic compounds with acidic hydrogen ...
09/17/1996
5538651Additive to improve fluidity of oil solutions of sheared polymers
A composition comprising (A) an ethylene-alpha olefin-bicyclic non-conjugated diene copolymer, wherein the alpha olefin contains from 3 to about 24 carbon atoms; (B) at least one organic sulfur containing compound selected from the group consisting of mer...
07/23/1996
5498354High temperature lubrication method for metal and ceramic bearings
Metal and ceramic bearing means being operated at elevated temperatures of at least 300° C. and higher under various atmospheric conditions are effectively lubricated with a novel class of vapor-phase deposited polymer lubricants. The lubricants are form...
03/12/1996
5453211Tetralins or a combination of tetrlins and organic sulfides as lube oil anti-oxidants
The oxidation stability of lube base oils is improved by the addition of tetralins or combination of tetralins and organic sulfides. The addition of tetralins or combination of tetralins and organic sulfides to formulated lube oils has also been found to ...
09/26/1995
5415794New sulfured compounds, their preparation and their use as additives for lubricating oils
Novel sulfurized compounds, their preparation and use. The compounds are based on the general formula {[R-Sx --(CH2)n --]z CH3-z --(CH2)p --}2 Sy, in which R is ...
05/16/1995
5364547Lubricants containing perfluorocyclobutane rings
A new lubricant comprises at least one compound having a perfluorocyclobutane group, preferably a perfluorovinyl aryl ether. The lubricant is conveniently applied from solvents which are not chlorofluorocarbons and is effective at high temperatures e.g., ...
11/15/1994
5344578Hydrocarbyl ethers of sulfur-containing hydroxyl derived aromatics as synthetic lubricant base stocks
Alkyl ethers of sulfur-containing hydroxyl-derived aromatics have been found to be effective as high-performance synthetic lubricant base stocks with superior catalytic thermal/oxidative stabilities, excellent antiwear and load-carrying properties, as exe...
09/06/1994
5344577Methods for reducing wear on silicon carbide ceramic surfaces
Methods for reducing wear on silicon carbide ceramic surfaces comprise contacting the surface with a lubricating oil composition including an organic sulfide. Preferred organic sulfides are of the formula R1 --S--(S)n --R2...
09/06/1994
1    
 
Sign InRegister
Username  
Password   
forgot password?