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:
Nov. 03, 2020
Filed:
Nov. 29, 2016
Applicant:
Junkosha Inc., Kasama-shi, JP;
Inventors:
Keiji Yoda, Kasama-shi, JP;
Hiroji Oda, Kasama-shi, JP;
Assignee:
Junkosha Inc., Kasama-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 11/00 (2006.01); F16L 11/04 (2006.01); B29C 48/10 (2019.01); B29C 48/30 (2019.01); B29C 48/09 (2019.01); B29C 48/00 (2019.01); B29C 48/32 (2019.01); B29K 75/00 (2006.01); B29L 23/00 (2006.01);
U.S. Cl.
CPC ...
F16L 11/04 (2013.01); B29C 48/09 (2019.02); B29C 48/10 (2019.02); B29C 48/30 (2019.02); B29C 48/022 (2019.02); B29C 48/32 (2019.02); B29K 2075/00 (2013.01); B29K 2995/0072 (2013.01); B29K 2995/0077 (2013.01); B29K 2995/0082 (2013.01); B29L 2023/005 (2013.01);
Abstract
Provided herein is a polyurethane tube having a small bending repulsive stress and superior inner-pressure creep characteristics in a flexible polyurethane tube. The present polyurethane tube has a bending repulsive stress of 0.035 N/mmor less, wherein the polyurethane tube is formed so that the difference between the storage elastic modulus E'at 30° C. and the storage elastic modulus E′at 80° C. is 15% or less of E′.