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:
Jun. 27, 1995
Filed:
Feb. 28, 1994
Applicant:
Inventor:
Hiroyasu Itoh, Shizuoka, JP;
Assignee:
Hamamatsu Photonics K.K., Shizuoka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G01N / ;
U.S. Cl.
CPC ...
436172 ; 436133 ; 422 8208 ; 73 2334 ; 738656 ; 2504591 ;
Abstract
A carbon dioxide gas is supplied to a living plant while it is illuminated with excitation light, and resulting fluorescence from the plant is detected. Then, a mixture of a carbon dioxide gas and a gas or fine particles to be monitored is supplied to the same living plant while it is illuminated with the excitation light, and resulting fluorescence from the plant is detected. Differences between temporal variations or wavelength characteristics of fluorescence intensities under the above two conditions are used to identify the gas or fine particles.