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.

Date of Patent:
Sep. 09, 2025

Filed:

Apr. 06, 2022
Applicant:

Hitachi, Ltd., Tokyo, JP;

Inventors:

Ryohei Matsui, Tokyo, JP;

Ryotaro Kawahara, Tokyo, JP;

Tetsufumi Kawamura, Tokyo, JP;

Nobuyuki Sugii, Tokyo, JP;

Naoko Ushio, Tokyo, JP;

Hiroyuki Yoshimoto, Tokyo, JP;

Assignee:

HITACHI, LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/01 (2006.01); G01L 1/20 (2006.01); G01L 1/22 (2006.01);
U.S. Cl.
CPC ...
G06F 3/014 (2013.01); G01L 1/205 (2013.01); G01L 1/225 (2013.01);
Abstract

A pressure sensor device, a method for manufacturing the pressure sensor device, and a work management system mitigating a degree of a false detection is presented. The pressure sensor device detecting pressure includes a flexible substrate base material having flexibility; a comb-teeth shape electrode having an exposed metal surface formed in a predetermined area on the flexible substrate base material; and a pressure-sensitive material that is provided on the comb-teeth shape electrode, varies in a resistance value depending on an amount of a load, and has a curvature in a static state.


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