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:
Nov. 16, 2004
Filed:
Apr. 14, 2003
Applicant:
Inventors:
Duane E. Cummings, Monticello, MN (US);
Raphael J. Marzean, St. Michael, MN (US);
Paul W. Thorne, Ham Lake, MN (US);
Assignee:
MarCum Technologies, Inc., Anoka, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 1/596 ;
U.S. Cl.
CPC ...
G01S 1/596 ;
Abstract
The present invention separates noise from actual return echoes of ultrasonic sound waves generated by the transducer of a sonar type fish finder by comparing the timing of generated ultrasonic pulses and received signals and disregarding signals when such timing does not match.