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International application No. Applicant's or agent's file reference
PCT/US2019/061663 O0354.70033WO00
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
15 November 2019 28 December 2018
FOR FURTHER ACTION: See Form PCT/ISA/220 as well as, where applicable, item 5 below.
This international search report has been prepared by this International Searching Authority and is transmitted to the applicant according to Article 18. A copy is being transmitted to the International Bureau.
It is also accompanied by a copy of each prior art document cited in this report.
1. Basis of the report
a. With regard to the language, the international search was carried out on the basis of:
the international application in the language in which it was filed.
a translation of the international application into                                          which is the language of a translation furnished for the purposes of international search (Rules 12.3(a) and 23.1(b)).
This international search report has been established taking into account the rectification of an obvious mistake authorized by or notified to this Authority under Rule 91 (Rule 43.6bis(a)).
With regard to any nucleotide and/or amino acid sequence disclosed in the international application, the international search was carried out on the basis of a sequence listing:
2. Certain claims were found unsearchable
3. Unity of invention is lacking
This International Searching Authority found multiple inventions in this international application, as follows:
1. claims: 1-5, 7-24, 29-33, 35-50, 55-59, 61-75
The group of inventions 1 is directed to an improvement of the SNR of images acquired by a MRI system.
2. claims: 25-28, 51-54, 76-79
The group of inventions 2 is directed to the portability of a MRI system.
3. claims: 6, 34, 60, 80-154
The group of inventions 3 is directed to a hysteresis model.
4. claims: 155-196
The group of inventions 4 is directed to measuring hysteresis in a MRI system.
As all required additional search fees were timely paid by the applicant, this international search report covers all searchable claims.
As all searchable claims could be searched without effort justifying additional fees, this Authority did not invite payment of additional fees.
As only some of the required additional search fees were timely paid by the applicant, this international search report covers only those claims for which fees were paid, specifically claims Nos.:
No required additional search fees were timely paid by the applicant. Consequently, this international search report is restricted to the invention first mentioned in the claims; it is covered by claims Nos.: 1-5, 7-24, 29-33, 35-50, 55-59, 61-75
Remark on Protest
The additional search fees were accompanied by the applicant’s protest and, where applicable, the payment of a protest fee.
The additional search fees were accompanied by the applicant’s protest but the applicable protest fee was not paid within the time limit specified in the invitation.
No protest accompanied the payment of additional search fees.
4. Title of the invention
The text is approved as submitted by the applicant.
The text has been established by this Authority to read as follows:
5. Abstract
The text is approved as submitted by the applicant.
The text has been established, according to Rule 38.2, by this Authority as it appears in Box No. IV. The applicant may, within one month from the date of mailing of this international search report, submit comments to this Authority.
6. Drawings
The figure of the drawings to be published with the abstract is Figure No.     10A    
as suggested by the applicant.
as selected by this Authority, because the applicant failed to suggest a figure.
as selected by this Authority, because this figure better characterizes the invention.
none of the figures is to be published with the abstract.


     G01R 33/389 (2006.01)i; G01R 33/44 (2006.01)i; G01R 33/565 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
EPO-Internal, WPI Data


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
EP 1004892 A1 (GEN ELECTRIC [US]) 31 May 2000 (2000-05-31)
paragraphs [0026] - [0028], [0043] - [0044], [0010]; figures 1,13
paragraph [0018] - paragraph [0021]; figure 10
paragraph [0022] - paragraph [0024]; figure 11
paragraph [0015]; figures 8, 9
paragraph [0033] - paragraph [0036]; figure 12
EP 1197760 A2 (GE MED SYS GLOBAL TECH CO LLC [US]) 17 April 2002 (2002-04-17)
paragraphs [0008] - [0009], [0048] - [0051], [0052] - [0064], [0065]
figure 3
JP H0910186 A (GE YOKOGAWA MED SYST LTD) 14 January 1997 (1997-01-14)
paragraphs [0022] - [0023], [0025] - [0026]; figures 1-3
paragraph [0027] - paragraph [0028]; figures 5-7
paragraph [0029] - paragraph [0034]; figures 8-10
US 5652517 A (MAKI KAZUTOSHI [JP] ET AL) 29 July 1997 (1997-07-29)
column 3, line 17 - line 42
US 2002097049 A1 (GOTO TAKAO [JP]) 25 July 2002 (2002-07-25)
paragraph [0040]
US 2018238978 A1 (MCNULTY CHRISTOPHER THOMAS [US] ET AL) 23 August 2018 (2018-08-23)
paragraphs [0125] - [0126], [0130], [0134] - [0136]
figures 2-3
Special categories of cited documents:
document defining the general state of the art which is not considered to be of particular relevance
document cited by the applicant in the international application
earlier application or patent but published on or after the international filing date
document which may throw doubts on priority claim(s) or which is cited to establish the publication date of another citation or other special reason (as specified)
document referring to an oral disclosure, use, exhibition or other means
document published prior to the international filing date but later than the priority date claimed
later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention
document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone
document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents, such combination being obvious to a person skilled in the art
document member of the same patent family


Patent document cited in search report Publication date
Patent family member(s) Publication date
EP 1004892 A1
31 May 2000
CN 1258001 A
EP 1004892 A1
JP 2000157509 A
KR 20000047701 A
28 June 2000
31 May 2000
13 June 2000
25 July 2000
EP 1197760 A2
17 April 2002
CN 1355425 A
EP 1197760 A2
JP 3853585 B2
JP 2002119491 A
KR 20020028849 A
US 2002041283 A1
26 June 2002
17 April 2002
06 December 2006
23 April 2002
17 April 2002
11 April 2002
JP H0910186 A
14 January 1997
JP 3576641 B2
JP H0910186 A
13 October 2004
14 January 1997
US 5652517 A
29 July 1997
JP 3472642 B2
JP H08266506 A
US 5652517 A
02 December 2003
15 October 1996
29 July 1997
US 2002097049 A1
25 July 2002
CN 1374069 A
EP 1207402 A2
JP 2002159463 A
KR 20020037716 A
US 2002097049 A1
16 October 2002
22 May 2002
04 June 2002
22 May 2002
25 July 2002
US 2018238978 A1
23 August 2018
US 2018238978 A1
US 2019025389 A1
US 2019033402 A1
US 2019250227 A1
US 2019250228 A1
23 August 2018
24 January 2019
31 January 2019
15 August 2019
15 August 2019
Name and mailing address of the ISA/:
European Patent Office
P.B. 5818, Patentlaan 2, 2280 HV Rijswijk,
Telephone No. (+31-70)340-2040
Facsimile No. (+31-70)340-3016
Date of the actual completion of the international search:
20 February 2020
Date of mailing of the international search report:
24 June 2020
Authorized officer:
Vanhaecke, Nicolas
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