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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4554178 B1

PDFFull Text
Date of Patent:
Nov. 19, 1985

Filed:

Aug. 27, 1984

Method of internally coating pipeline

Applicant:
Inventors:

Mitsuo Yamamoto, Osaka, JP;

Namio Kinumoto, Osaka, JP;

Toshinori Tsuji, Osaka, JP;

Tutomu Hiraoka, Uji, JP;

Assignee:

Osaka Gas Company, Osaka, JP;

Attorney:

Greigg; Edwin E.

Primary Examiner:

James R Hoffman

Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427140 ; 427142 ; 427232 ; 427235 ;
Abstract

A pipeline needing leakage repair and/or prevention is filled with a liquid sealant in foamed state of the aqueous emulsion type. Then an excess amount of the sealant in the center of the pipeline is drained from the pipeline, and the sealant remaining on the interior wall of the pipeline is allowed to cure wherein the sealant contains fine particles of inorganic oxide weakly adhering to one another into aggregations, said aggregations easily breaking into such fine particles that they can enter and plug fine cavities of the interior of said pipeline.

Find Patent Forward Citations

Yamamoto, Mitsuo. (1985). Method of internally coating pipeline (U.S. Patent No. 4554178). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4554178

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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