Global Patent Index - EP 1047949 A2

EP 1047949 A2 2000-11-02 - METHODS OF AND APPARATUS FOR NQR TESTING A SAMPLE

Title (en)

METHODS OF AND APPARATUS FOR NQR TESTING A SAMPLE

Title (de)

VERFAHREN UND GERÄT FÜR DIE UNTERSUCHUNG EINER PROBE MITTELS KERNQUADRUPOLRESONANZ

Title (fr)

PROCEDES ET DISPOSITIF PERMETTANT DE TESTER UN ECHANTILLON PAR RESONANCE QUADRIPOLAIRE NUCLEAIRE

Publication

EP 1047949 A2 (EN)

Application

EP 98947680 A

Priority

  • GB 9803099 W
  • GB 9721892 A

Abstract (en)

[origin: WO9919740A1] Methods of and apparatus for Nuclear Quadrupole Resonance (NQR) testing a sample containing quadrupolar nuclei exhibiting a given value of spin-lattice relaxation time, T1, are disclosed. The off-resonance and the sensitivity of the NQR test may be futher improved by applying excitation (in the form of "bridging pulses") between the two excitation blocks. The method comprises applying two excitation blocks to excite nuclear quadrupole resonance, there being a given delay time between the two blocks, detecting resonance response signals, and comparing the response signals from respective blocks. The delay time is less than the T1 value of the nuclei.

IPC 1-7 (main, further and additional classification)

G01R 33/44

IPC 8 full level (invention and additional information)

G01R 33/44 (2006.01)

CPC (invention and additional information)

G01R 33/441 (2013.01); G01N 24/084 (2013.01)

Citation (search report)

See references of WO 9919740A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9919740 A1 19990422; WO 9919740 B1 19990527; CA 2307307 A1 19990422; EP 1047949 A2 20001102; EP 1574873 A1 20050914; GB 9721892 D0 19971217

INPADOC legal status


2005-08-24 [18R] REFUSED

- Effective date: 20050403

2003-07-30 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030616

2000-11-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000406

2000-11-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE