(19)
(11) EP 2 387 784 A2

(12)

(88) Date of publication A3:
24.03.2011

(43) Date of publication:
23.11.2011 Bulletin 2011/47

(21) Application number: 10702161.0

(22) Date of filing: 15.01.2010
(51) International Patent Classification (IPC): 
G10K 11/20(2006.01)
(86) International application number:
PCT/GB2010/050058
(87) International publication number:
WO 2010/082062 (22.07.2010 Gazette 2010/29)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30) Priority: 16.01.2009 GB 0900668

(71) Applicant: Subsea Asset Location Technologies Limited
Salisbury, Wiltshire SP4 6FA (GB)

(72) Inventors:
  • TILTMAN, Carl Peter
    Weymouth Dorset DT4 0EA (GB)
  • TULLOCH, Andrew Malcolm
    Reading Berkshire RG2 9QA (GB)

(74) Representative: Beckham, Robert William 
Beckhams IP Gatehouse Lake Road Portishead
Bristol BS20 7JA
Bristol BS20 7JA (GB)

   


(54) ACOUSTIC MARKERS