US Patent No: 5,667,594

Number of patents in Portfolio can not be more than 2000

Cleaning method with solvent

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Abstract

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A cleaning solvent composition that is made by either blending aliphatic fluorohydrocarbon as expressed by the general formula C.sub.n F.sub.m H.sub.2n+2-m (wherein, n and m are a positive integral numbers, being 4.ltoreq.n.ltoreq.6, 2n-3.ltoreq.m<2n+2 respectively) or blending a mixture of this aliphatic fluorohydrocarbon and alcohol having a carbon number of 1 to 4 with lactam and/or carboxylic acid amide, tertiary amines, or alcohol having ether linkage and/or amino linkage within its molecules. A cleaning process wherein an object is dipped into the said composition to remove dirty component, then rinsed with a mixture of the said aliphatic fluorohydrocarbon and the said alcohol having a carbon number of 1 to 4, and thereafter the object is steam cleaned with the said mixture when necessity arises. The use of the cleaning solvent composition, which does not destroy the ozone, is non-combustible, and shows an excellent cleaning effect, enables the object to be rinsed and steam cleaned in a nonaqueous system and allows the subsequent drying process to be simplified, and thus leads to a cleaned object free of residue and stains.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DAIKIN INDUSTRIES, LTD.OSAKA2179

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aoyama, Hirokazu Settsu, JP 74 365
Ide, Satoshi Kawasaki, JP 110 442
Matsuda, Takahiro Kawasaki, JP 77 347
Omure, Yukio Osaka, JP 22 167

Cited Art Landscape

Patent Info (Count) # Cites Year
 
E. I. DU PONT DE NEMOURS AND COMPANY (6)
5,064,559 Binary azeotropic compositions of (CF.sub.3 CHFCHFCF.sub.2 CF.sub.3) with methanol or ethanol or isopropanol 51 1990
5,268,122 Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositions 39 1991
5,221,361 Compositions of 1,1,1,2,2,5,5,5,-octafluoro-4-trifluoromethylpentane and use thereof for cleaning solid surfaces 4 1991
5,221,493 Azeotropic compositions of 1,1,2,2,3,3,4,4-octafluorobutane and alcohols or ketones 21 1991
5,250,208 Ternary azeotropic compositions 36 1992
5,531,916 Hydrofluorocarbon cleaning compositions 25 1993
 
Allied Signal (2)
5,219,489 Azeotrope-like compositions of 2-trifluoromethyl-1,1,1,2-tetrafluorobutane and methanol 6 1991
5,219,488 Azeotrope-like compositions of 2-trifluoromethyl-1,1,1,2-tetrafluorobutane and ethanol or isopropanol 9 1992
 
DAIKIN INDUSTRIES, LTD. (2)
5,346,645 Desiccant composition and a method of desiccating articles 17 1992
5,424,002 Solvent composition comprising mixture of polyfluoroalkane and lower alcohol 4 1994
 
SOLVAY (SOCIETE ANONYME) (2)
5,073,291 Novel azeotrope-type solvent mixture of methanol and 1,4-dihydroperfluorobutane and process for cleaning electronic components with the aid of the same 17 1991
5,294,358 Compositions containing 1,1,1,2-tetrafluoroethane and methyl chloride and use of these compositions 6 1991
 
ALBATROSS USA, INC. (1)
5,454,969 Cleaning fluids 12 1993
 
BAXTER INTERNATIONAL INC. (1)
5,304,253 Method for cleaning with a volatile solvent 39 1992
 
IMPERIAL CHEMICAL INDUSTRIES PLC (1)
4,559,154 Heat pumps 65 1984
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
4,276,186 Cleaning composition and use thereof 81 1979
 
Stevens Sciences Corp. (1)
5,288,335 Paint stripper and varnish remover compositions, methods for making these compositions and methods for removing paint and other polymeric coatings from flexible and inflexible surfaces 23 1992

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
ASAHI GLASS COMPANY, LIMITED (4)
6,544,595 Fluorinated carrier solvent 2 2002
6,740,362 Fluorinated carrier solvent 0 2002
7,053,035 Solvent composition 5 2003
7,754,665 Lubricant solution and method for coating lubricant 0 2004
 
3M INNOVATIVE PROPERTIES COMPANY (1)
6,541,435 Engine cleaner composition 3 2000
 
E. I. DU PONT DE NEMOURS AND COMPANY (1)
5,730,894 1,1,2,2,3,3,4,4-octafluorobutane azeotropic (like) compositions 21 1996
 
ELF ATOCHEM S.A. (1)
5,747,437 Cleaning compositions based on 1,1,1,2,2,4,4-heptafluorobutane and C.sub.1 -C.sub.3 alcohols 2 1996
 
HEIDELBERGER DRUCKMASCHINEN AG (1)
6,432,211 Method of cleaning a printing form and cleaning fluid therefor 4 1998
 
Kyzen Corporation (1)
6,017,862 Cleaning compositions and methods for cleaning resin and polymeric materials used in manufacture 12 1998
 
MERCK PATENT GMBH (1)
6,265,365 Roller wash composition 3 1999
 
MINOLTA CO., LTD. (1)
7,160,396 Washing method 0 2005
 
Other [Check patent profile for assignment information] (1)
7,211,551 Universal cleaner that cleans tough oil, grease and rubber grime and that is compatible with many surfaces including plastics 0 2003