Cleaning method with solvent

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO

5667594

SERIAL NO

08196214

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ATTORNEY / AGENT: (SPONSORED)

Importance

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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.OSAKA1828

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aoyama, Hirokazu Settsu, JP 63 436
Ide, Satoshi Settsu, JP 84 540
Matsuda, Takahiro Settsu, JP 85 500
Omure, Yukio Settsu, JP 22 176

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ALBATROSS USA, INC. (1)
* 5454969 Cleaning fluids 12 1993
 
Stevens Sciences, Corp. (1)
* 5288335 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
 
BAXTER INTERNATIONAL INC. (1)
* 5304253 Method for cleaning with a volatile solvent 39 1992
 
E. I. DU PONT DE NEMOURS AND COMPANY (6)
* 5064559 Binary azeotropic compositions of (CF.sub.3 CHFCHFCF.sub.2 CF.sub.3) with methanol or ethanol or isopropanol 51 1990
* 5268122 Gem-dihydropolyfluoroalkanes and monohydropolyfluoroalkenes, processes for their production, and use of gem-dihydropolyfluoroalkanes in cleaning compositions 39 1991
* 5221361 Compositions of 1,1,1,2,2,5,5,5,-octafluoro-4-trifluoromethylpentane and use thereof for cleaning solid surfaces 4 1991
* 5221493 Azeotropic compositions of 1,1,2,2,3,3,4,4-octafluorobutane and alcohols or ketones 21 1991
* 5250208 Ternary azeotropic compositions 45 1992
* 5531916 Hydrofluorocarbon cleaning compositions 25 1993
 
SOLVAY SA (2)
* 5073291 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
* 5294358 Compositions containing 1,1,1,2-tetrafluoroethane and methyl chloride and use of these compositions 6 1991
 
DAIKIN INDUSTRIES, LTD. (2)
* 5346645 Desiccant composition and a method of desiccating articles 19 1992
* 5424002 Solvent composition comprising mixture of polyfluoroalkane and lower alcohol 4 1994
 
ALLIED-SIGNAL INC. (2)
* 5219489 Azeotrope-like compositions of 2-trifluoromethyl-1,1,1,2-tetrafluorobutane and methanol 6 1991
* 5219488 Azeotrope-like compositions of 2-trifluoromethyl-1,1,1,2-tetrafluorobutane and ethanol or isopropanol 9 1992
 
IMPERIAL CHEMICAL INDUSTRIES PLC (1)
* 4559154 Heat pumps 65 1984
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
7211551 Universal cleaner that cleans tough oil, grease and rubber grime and that is compatible with many surfaces including plastics 2 2003
 
Minolta Co., Ltd. (1)
* 7160396 Washing method 0 2005
 
ELF ATOCHEM S.A. (1)
* 5747437 Cleaning compositions based on 1,1,1,2,2,4,4-heptafluorobutane and C.sub.1 -C.sub.3 alcohols 2 1996
 
3M INNOVATIVE PROPERTIES COMPANY (1)
* 6541435 Engine cleaner composition 4 2000
 
E. I. DU PONT DE NEMOURS AND COMPANY (1)
* 5730894 1,1,2,2,3,3,4,4-octafluorobutane azeotropic (like) compositions 26 1996
 
HEIDELBERGER DRUCKMASCHINEN AG (1)
* 6432211 Method of cleaning a printing form and cleaning fluid therefor 4 1998
 
HONEYWELL INTERNATIONAL INC. (1)
* 2006/0179,852 Compositions and methods for cleaning vapor compression systems 6 2005
 
ECOLAB INC. (1)
* 2010/0093,597 ULTRA-CONCENTRATED SOLID DEGREASER COMPOSITION 1 2009
 
Kyzen Corporation (1)
* 6017862 Cleaning compositions and methods for cleaning resin and polymeric materials used in manufacture 16 1998
 
MERCK PATENT GMBH (1)
* 6265365 Roller wash composition 3 1999
 
ASAHI GLASS COMPANY, LIMITED (6)
6544595 Fluorinated carrier solvent 2 2002
6740362 Fluorinated carrier solvent 0 2002
* 7053035 Solvent composition 5 2003
* 2003/0171,240 Solvent composition 0 2003
* 7754665 Lubricant solution and method for coating lubricant 0 2004
* 2005/0107,271 Lubricant solution and method for coating lubricant 0 2004
* Cited By Examiner