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:
Sep. 26, 1989
Filed:
Mar. 28, 1989
Applicant:
Inventors:
Hirokazu Saito, Kanagawa, JP;
Kozo Takano, Kanagawa, JP;
Kiyoyuki Ushirokoji, Kanagawa, JP;
Shigeo Igarashi, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
73299 ; 73708 ; 165 47 ;
Abstract
A pressure difference type liquid level meter for measuring the quantity of an object liquid includes a liquid receptacle containing the object liquid, a pressure transmitting device including a pressure transmitting liquid for transmitting a pressure from the object liquid to a pressure difference detector so as to compare the transmitted pressure with a reference pressure, and an isothermal device for maintaining at least part of the pressure transmitting liquid at a predetermined temperature.