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:
Aug. 04, 1998
Filed:
Dec. 08, 1995
Applicant:
Inventors:
Fumihiro Sasaki, Okayama-Ken, JP;
Hiroshi Shinmen, Okayama, JP;
Akira Suzuki, Uenohara-machi, JP;
Keiichi Arai, Hachioji, JP;
Assignees:
Japan GORE-TEX, Inc, Tokyo, JP;
Olympus Optical Co., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
428 3691 ; 428 369 ; 428 365 ; 4283044 ; 4283066 ; 4283084 ; 4283148 ; 128-4 ; 128D / ;
Abstract
A flexible, multilayered tube with superior chemical resistance, heat resistance, and airtightness, as well as superior flexibility and resistance of the inner surface to staining. The tube comprises a flexible, multilayered tube having a first layer comprised of a non-porous polytetrafluoroethylene structure and a second layer comprised of a porous polytetrafluoroethylene structure laminated onto the outer peripheral surface of said first layer. The tube is useful as a medical tubing and in particular useful as an endoscope tube.