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:
Oct. 06, 1987
Filed:
Feb. 14, 1986
Applicant:
Inventor:
Mitsuru Ikeda, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
C12M / ;
U.S. Cl.
CPC ...
435291 ; 435287 ; 435808 ; 2503 / ; 250364 ;
Abstract
A device for continuously and accurately measuring the number of bacteria present in superpure water such as may be used in the manufacture of semiconductor devices and the like. A sample flow of the superpure water is passed through a generally rectangular measuring flow path having a small thickness and large width. A reagent is added to the flow in the measuring flow path of a type which reacts with bacteria to produce products which fluoresce upon application of an exciting light beam. The light produced by such fluorescence is detected and the detection output converted to a signal indicative of the number of bacteria present in the sample flow.