US Patent 7497877 Solvent cleaning process
Patent 7497877 was granted and assigned to Whirlpool Corporation on March, 2009 by the United States Patent and Trademark Office.
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Patent abstract
An improved solvent cleaning process of cleaning a non-aqueous solvent used in a dry cleaning process for fabrics including consecutive wash cycles for washing respective fabrics batches, including a basic solvent refining cycle and a first advanced solvent refining cycle, the basic solvent refining cycle including a step of separating solvent into a first solvent fraction and a second solvent fraction which is less clean than the first fraction, wherein the basic and first advanced solvent refining cycles are independently effected when solvent to be cleaned fulfils a respective predetermined condition.
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Current Assignee
Patent Jurisdiction
Patent Number
74978770
Date of Patent
March 3, 2009
0Patent Application Number
107340270
Date Filed
December 11, 2003
0Patent Primary Examiner
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Patent Citations Received
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Official Website
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US Patent 07497877 Solvent cleaning process US Patent 7497877 Solvent cleaning process
Infobox
Patent Number
0749787700
Patent Number
749787700
Edits on 24 Mar, 2023
Golden AI
Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
074978770
Date of Patent
March 3, 2009
0Patent Application Number
107340270
Date Filed
December 11, 2003
0Official Website
Patent Primary Examiner
Edits on 22 Sep, 2022
Golden AI
Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
074978770
Date of Patent
March 3, 2009
0Patent Application Number
107340270
Date Filed
December 11, 2003
0Official Website
Patent Primary Examiner
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US Patent 07497877 Solvent cleaning process
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07497877
Date of patent
March 3, 2009
Patent application number
10734027
Date Filed
December 11, 2003
Patent primary examiner
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