Assignee
SONATECH INC
US8 patents
Top patents by PatentIndex Score
US5659520AAug 19, 1997
Super short baseline navigation using phase-delay processing of spread-spectrum-coded reply signals
SONATECH INC69 citations87
US5513886AMay 7, 1996
Undersea release apparatus
SONATECH INC39 citations85
US4924446AMay 8, 1990
Navigation system and method for determining the position of a relatively noisy platform using underwater transponders
SONATECH INC21 citations78
US4401987AAug 30, 1983
Ranging system having reduced recognition jitter
SONATECH INC17 citations70
US5493895AFeb 27, 1996
Modular penetrometer
SONATECH INC8 citations67
US5504685AApr 2, 1996
Method and apparatus for routing an underwater cable system
SONATECH INC11 citations66
US5444670AAug 22, 1995
Method and apparatus for determining soil strength from Doppler-shifted acoustic signatures
SONATECH INC18 citations60
US5557584ASep 17, 1996
Moderate depth underwater surveillance system
SONATECH INC13 citations59