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 9121815 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 01, 2015

Filed:

Apr. 30, 2013
Applicant:

Hyundai Motor Company, Seoul, KR;

Inventors:

Keum-hyang Lee, Seoul, KR;

Min-Chul Shin, Seoul, KR;

Eun-Ho Shin, Seoul, KR;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01J 5/02 (2006.01); G01N 21/23 (2006.01);
U.S. Cl.
CPC ...
G01N 21/23 (2013.01); G01J 5/02 (2013.01);
Abstract

Disclosed is a method for measuring a fiber content of polyethyleneterephthalate (PET) and polytrimethyleneterephthalate (PTT) fibers, particularly wherein the method includes: a qualitative analysis step of identifying a presence of polyethyleneterephthalate (PET) and polytrimethyleneterephthalate (PTT) fibers in a mixed-spun fiber product; and a quantitative analysis step of measuring the fiber content by a microscopic count through difference in color between PET and PTT fibers by birefringence in a cross polarization state of a polarized light microscope (PLM). Through the present invention, it is possible to simply and accurately calculate the fiber content of PET and PTT fibers in a mixed-spun fiber material in which various kinds of fibers are mixed.


Find Patent Forward Citations

Lee, Keum-hyang. (2015). Method for measuring fiber content of polyethyleneterephthalate and polytrimethyleneterephthalate fibers (U.S. Patent No. 9121815). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9121815

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