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:
Jan. 16, 1990
Filed:
Apr. 21, 1987
Applicant:
Inventors:
Kiyotaka Furuno, Nishinomiya, JP;
Hidetoshi Tanigaki, Nishinomiya, JP;
Kouji Yano, Itami, JP;
Tadashi Ozaki, Kobe, JP;
Yoshihisa Fukuda, Kawanishi, JP;
Takumi Fujikawa, Takarazuka, JP;
Makoto Tanaka, Nishinomiya, JP;
Assignee:
Furuno Electric Company, Limited, Hyogo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
342140 ; 43 17 ;
Abstract
A fish school detecting method or apparatus radiates radio search signals with their carrier frequency in the S-band frequency range, successively in different azimuthal directions through a wide angular range, receives echo signals, and displays the echo signals on the screen of an indicator in such a manner that the echo signal reflected by a bird is clearly distinguished from the other objects, thereby locating the bird and detecting a fish school under the bird.