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.:
Date of Patent:
Dec. 08, 1987
Filed:
Mar. 08, 1984
Applicant:
Inventors:
Yasuteru Tahara, Ohtake, JP;
Kazuyoshi Koike, Ohtake, JP;
Assignee:
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73 377 ; 73160 ;
Abstract
An improved method and an equipment for detecting a pinhole in hollow filament, wherein the improvement comprises passing the hollow filament through a liquid maintained at a pressure higher than that of the gas in the interior of said hollow filament to allow the liquid to intrude through the pinhole into the interior of the hollow filament and detecting the intruded liquid.