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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 5013506 B1

PDFFull Text
Date of Patent:
May. 07, 1991

Filed:

Jul. 25, 1989

Process for producing polyester fibers

Applicant:
Inventors:

Shigemitsu Murase, Kyoto, JP;

Kouji Kakumoto, Kyoto, JP;

Shouji Miyazaki, Kyoto, JP;

Masaru Sugawa, Kyoto, JP;

Mikio Ide, Kyoto, JP;

Assignee:

Unitika Ltd., Hyogo, JP;

Attorney:

Sughrue, Mion, Zinn Macpeak & Seas

Primary Examiner:

Hubert C Lorin

Assistant Examiner:

Brian C Jones

Int. Cl.
CPC ...
D01D / ; D01F / ;
U.S. Cl.
CPC ...
2642108 ; 26421117 ; 264234 ; 264235 ; 264345 ; 264346 ;
Abstract

Melt-spun polyester fibers are taken up in the absence of heat at a speed of 5,000 to 6,000 m/min under conditions that satisfy the following relations (IX) and (X), subsequently heat-treating the fibers for a period of from 0.01 to 0.05 seconds with a heating roller while the length of the melt-spun fibers is held constant with no drawing step being provided between the taking up and heat treatment steps, and finally winding up the heated fibers

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Murase, Shigemitsu. (1991). Process for producing polyester fibers (U.S. Patent No. 5013506). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5013506

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