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:
Aug. 11, 1987
Filed:
Apr. 10, 1985
Applicant:
Inventors:
Susumu Saito, Hachioji, JP;
Michio Suzuki, Hino, JP;
Kyo Suda, Hachioji, JP;
Yasuo Yatsugake, Odawara, JP;
Kazuya Tsukada, Oiso, JP;
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi Electronics Engineering Co. Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356339 ; 356352 ;
Abstract
In a small particle detection system for use in detecting small particles, which float in a gas, by utilizing the light scattering effect thereof, a detecting cell is disposed in an external optical resonator which is adapted to resonate with the output light from a laser oscillator. When the detecting cell is disposed in the laser oscillating optical resonator, the position is selectively determined; the former is set in the position in the latter in which the diameter of a laser beam is minimal.