Nova Patents
PT851908E

Lubricant compositions and methods

Abstract

A process is disclosed for manufacturing a lubricant composition comprising combining a superabsorbent polymer with a material for decreasing friction between moving surfaces. The superabsorbent polymer absorbs from about 25 to greater than 100 times its weight in water and may comprise a polymer of acrylic acid, and acrylic ester, acrylonitrile or acrylamide, including co-polymers thereof or starch graft copolymers thereof or mixtures thereof. A product produced by the process includes the material for decreasing friction comprising a petroleum lubricant containing an additive, water containing an additive, synthetic lubricant, grease, solid lubricant or metal working lubricant, wherein the synthetic lubricant, grease, solid lubricant or metal working lubricant optionally contain an additive. A process comprising controlling the delivery of a lubricant to at least one of two moving surfaces in order to decrease friction between said moving surfaces, is also disclosed. This process includes applying the lubricant composition to at least one of the surfaces. The lubricant composition in this instance comprises a superabsorbant polymer combined with a material for decreasing friction between moving surfaces, wherein the material for decreasing friction comprises a petroleum lubricant, water, synthetic lubricant, grease, solid lubricant or metal working lubricant, and optionally an additive.

Term

Term ended

Projected expiry passed 6 June 2016, 10.3 years ago.

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33 members in 12 offices

This recordMember, by publication datePriority claim2 more offices are in the list below

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Priority claims
DocumentOfficeKindDate
48743695United States of AmericaA
58358796United States of AmericaA

Members33

Family members, oldest first
DocumentOfficeKind
CA2223286A1CanadaA1
WO9640849A1World Intellectual Property Organization (WIPO)A1
AU6278096AAustraliaA
AU691758B2AustraliaB2
EP0851908A1European Patent Office (EPO)A1
MX9709714AMexicoA
JPH11507678AJapanA
US2001014711A1United States of AmericaA1
US2001049344A1United States of AmericaA1
US2002169086A1United States of AmericaA1
US2002198113A1United States of AmericaA1
US2002198114A1United States of AmericaA1
US2003013615A1United States of AmericaA1
EP0851908B1European Patent Office (EPO)B1
AT239068TAustriaT
ATE239068T1AustriaT1
DE69627872D1GermanyD1
DK0851908T3DenmarkT3
PT851908EThis recordPortugalE
ES2198490T3SpainT3
US2004029748A1United States of AmericaA1
US6734147B2United States of AmericaB2
DE69627872T2GermanyT2
US2004138072A1United States of AmericaA1
US2004167038A1United States of AmericaA1
US2004167043A1United States of AmericaA1
US2005197259A1United States of AmericaA1
CA2223286CCanadaC
US7338926B2United States of AmericaB2
US7358216B2United States of AmericaB2
US7553541B2United States of AmericaB2
US7718585B2United States of AmericaB2
US7767631B2United States of AmericaB2