US Patent 7806631 Underground filling and sealing method
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Patent abstract
The present invention is directed to a method for filling and sealing underground voids and the like with use of a grout comprising aggregate coated with a water-activated expanded hydrophobic polymeric resin, such as polyurethane.
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Patent Inventor Names
Eric W. Smith0
Homer D. Libengood0
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Official Website
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US Patent 07806631 Underground filling and sealing method US Patent 7806631 Underground filling and sealing method
Infobox
Patent Number
078066310
Patent Number
78066310
Edits on 25 Sep, 2022
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Patent Jurisdiction
Patent Number
078066310
Date of Patent
October 5, 2010
0Patent Application Number
117876290
Date Filed
April 17, 2007
0Official Website
Patent Primary Examiner
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US Patent 07806631 Underground filling and sealing method
Infobox
Is a
Patent jurisdiction
Patent number
07806631
Date of patent
October 5, 2010
Patent application number
11787629
Date Filed
April 17, 2007
Patent primary examiner
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