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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 6131616 B1

PDFFull Text
Date of Patent:
Oct. 17, 2000

Filed:

Jun. 07, 1999

Corrugated synthetic resin pipe

Applicant:
Inventors:

Yoshiaki Tatsuta, Osaka, JP;

Kazuya Yamashita, Osaka, JP;

Takeshi Mochizuki, Osaka, JP;

Kazumasa Nakayama, Osaka, JP;

Assignee:

Totaku Industries, Inc., Osaka, JP;

Attorney:

McGuireWoods, LLP

Primary Examiner:

James Hook

Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138121 ; 138110 ; 138155 ; 138156 ; 138177 ;
Abstract

A corrugated synthetic resin pipe comprises a pipe wall including sectionally rectangular wall portions and sectionally circular wall portions disposed alternately in a longitudinal direction of the pipe. Each of the sectionally circular wall portions has an annular projected portion disposed at a substantially center of the sectionally circular wall portion between adjacent sectionally rectangular wall portions in the longitudinal direction, to thereby prevent parallel layout or stack layout of pipes from being disturbed.

Find Patent Forward Citations

Tatsuta, Yoshiaki. (2000). Corrugated synthetic resin pipe (U.S. Patent No. 6131616). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6131616

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

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