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Class Information
Number: 340/850
Name: Communications: electrical > Underwater
Description: Subject matter in which a significant portion of the communication takes place under water.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7612686 |
Emergency underwater notification device |
Nov. 3, 2009 |
| 7576447 |
Control and supply system |
Aug. 18, 2009 |
| 7466629 |
Manually agitated underwater signaling device |
Dec. 16, 2008 |
| 7436324 |
Maritime port inspection and ingress control |
Oct. 14, 2008 |
| 7388512 |
Diver locating method and apparatus |
Jun. 17, 2008 |
| 7365650 |
Underwater RF propagation path |
Apr. 29, 2008 |
| 7336198 |
Magnetostatic communication |
Feb. 26, 2008 |
| 7310286 |
System for undersea digital acoustic communications |
Dec. 18, 2007 |
| 7301474 |
Wireless communication system and method |
Nov. 27, 2007 |
| 7289038 |
Underwater sound radiation apparatus |
Oct. 30, 2007 |
| 7218574 |
High range rate signaling |
May. 15, 2007 |
| 7194330 |
Container tracking system |
Mar. 20, 2007 |
| 7148811 |
Emergency underwater notification device |
Dec. 12, 2006 |
| 7113097 |
Underwater device with transmitter |
Sep. 26, 2006 |
| 7058305 |
Optical submarine communication system and surge suppressing apparatus of the optical submarine communication system |
Jun. 6, 2006 |
| 6999857 |
Data communication and power transmission system for sensing devices |
Feb. 14, 2006 |
| 6989755 |
Signal transmission device and method |
Jan. 24, 2006 |
| 6972690 |
System and method for transmission of electrical signals in imperfectly-conducting media |
Dec. 6, 2005 |
| 6731879 |
Submarine communications system and landing-stage therefor |
May. 4, 2004 |
| 6600695 |
Method and apparatus for retrieving an unmanned underwater vehicle |
Jul. 29, 2003 |
| 6577921 |
Container tracking system |
Jun. 10, 2003 |
| 6420976 |
Underwater hydrocarbon production systems |
Jul. 16, 2002 |
| 6333685 |
Apparatus for detecting submergence of vehicle |
Dec. 25, 2001 |
| 6317055 |
Monitor information transmitting/receiving apparatus in submarine cable system |
Nov. 13, 2001 |
| 6307810 |
Underwater launched acoustic warning assembly |
Oct. 23, 2001 |
| 6130859 |
Method and apparatus for carrying out high data rate and voice underwater communication |
Oct. 10, 2000 |
| 6058874 |
Radio frequency communications for underwater vehicle |
May. 9, 2000 |
| 5841205 |
Branching unit for underwater telecommunications systems |
Nov. 24, 1998 |
| 5748102 |
Apparatus for interconnecting an underwater vehicle and a free floating communications pod |
May. 5, 1998 |
| 5706251 |
Scuba diving voice and communication system using bone conducted sound |
Jan. 6, 1998 |
| 5701276 |
Underwater communication system by means of coded pulses |
Dec. 23, 1997 |
| 5646366 |
Underwater defense system |
Jul. 8, 1997 |
| 5598152 |
Mine sweeping system for magnetic and non-magnetic mines |
Jan. 28, 1997 |
| 5592156 |
Underwater alpha-numeric communication system |
Jan. 7, 1997 |
| 5579284 |
Scuba diving voice and communication system using bone conducted sound |
Nov. 26, 1996 |
| 5534869 |
Open transmission line locating system |
Jul. 9, 1996 |
| 5455842 |
Method and apparatus for underwater communication |
Oct. 3, 1995 |
| 5444441 |
Electro-optical detection system for reflection free underwater images from aircraft |
Aug. 22, 1995 |
| 5412620 |
Hydroacoustic communications system robust to multipath |
May. 2, 1995 |
| 5379034 |
Apparatus and method of radio communication from a submerged underwater vehicle |
Jan. 3, 1995 |
| 5377165 |
Communication system for submarines |
Dec. 27, 1994 |
| 5365923 |
Sound responsive optical warning apparatus and method for SCBA |
Nov. 22, 1994 |
| 5291194 |
Apparatus for interconnecting an underwater vehicle and a free-floating pod |
Mar. 1, 1994 |
| H1231 |
Antiship torpedo defense system |
Sep. 7, 1993 |
| 5185605 |
Dive profile recorder |
Feb. 9, 1993 |
| 5172112 |
Subsea well pressure monitor |
Dec. 15, 1992 |
| 5050136 |
Super polyelectrolytic communication links |
Sep. 17, 1991 |
| 5019822 |
Marine object detector |
May. 28, 1991 |
| 5010530 |
Magnetic coupler for electroacoustic hydrophones |
Apr. 23, 1991 |
| 4999606 |
Dive parameter indicating assembly |
Mar. 12, 1991 |
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