(19)
(11) EP 3 759 506 A1

(12)

(43) Date of publication:
06.01.2021 Bulletin 2021/01

(21) Application number: 19714716.8

(22) Date of filing: 26.02.2019
(51) International Patent Classification (IPC): 
G01R 33/00(2006.01)
G01R 33/12(2006.01)
(86) International application number:
PCT/GB2019/050533
(87) International publication number:
WO 2019/166797 (06.09.2019 Gazette 2019/36)
(84) Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 27.02.2018 GB 201803195

(71) Applicant: HIRST MAGNETIC INSTRUMENTS LIMITED
Falmouth Cornwall TR11 4SN (GB)

(72) Inventors:
  • DUDDING, John
    Falmouth, Cornwall TR11 4SN (GB)
  • CLEWETT, James
    Falmouth, Cornwall TR11 4SN (GB)
  • WADE, Jack
    Falmouth, Cornwall TR11 4SN (GB)
  • CORNELIUS, Robin
    Falmouth, Cornwall TR11 4SN (GB)

(74) Representative: Craske, Stephen Allan 
Craske & Co. Shallowford Holsworthy Road Hatherleigh
Okehampton Devon EX20 3LE
Okehampton Devon EX20 3LE (GB)

   


(54) METHOD OF ESTIMATING THE CLOSED-CIRCUIT PROPERTIES OF A MAGNETIC MATERIAL