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. 30, 2025
Filed:
Oct. 19, 2021
Sumco Corporation, Tokyo, JP;
Kenji Okita, Tokyo, JP;
SUMCO CORPORATION, Tokyo, JP;
Abstract
A differential pressure measuring device and a differential pressure measurement method that can measure the difference between the pressure in an on-floor area and the pressure in an under-floor area even when the differential pressure is small. The device includes a differential pressure measuring unit, a first pipe of which one end is connected to a first port, and a second pipe of which one end is connected to a second port; and a cup to which the other end of the second pipe is connected and which forms a space for measuring the pressure in the under-floor area on the grating floor plate. The distance in a device height direction between the other end of the first pipe and the other end of the second pipe is fixed.