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. 04, 2025
Filed:
Oct. 13, 2021
Applicant:
The Japan Steel Works, Ltd., Tokyo, JP;
Inventors:
Kazuya Yokomizo, Tokyo, JP;
Yohei Fukuzawa, Tokyo, JP;
Assignee:
THE JAPAN STEEL WORKS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 48/92 (2019.01); B29C 48/68 (2019.01); B29C 48/69 (2019.01); B29C 48/695 (2019.01);
U.S. Cl.
CPC ...
B29C 48/92 (2019.02); B29C 48/68 (2019.02); B29C 48/69 (2019.02); B29C 48/695 (2019.02); B29C 2948/92019 (2019.02); B29C 2948/922 (2019.02); B29C 2948/924 (2019.02); B29C 2948/92409 (2019.02);
Abstract
An extruder includes a cylinderand a dieattached to the cylinderThe diehas a resin flow path portionto which a molten resin is supplied from the cylinderand a holewhich is connected to the resin flow path portionand from which the molten resin is discharged. The extruder further includes a pressure measurement unitconfigured to measure a pressure of the molten resin in the cylinderor the dieand a calculation unit configured to calculate a viscosity of the molten resin based on a measured value of the pressure measurement unit