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International application No. Applicant's or agent's file reference
PCT/US2019/031737 6000-614025
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
10 May 2019
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
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.     1    
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.


     E21B 49/06 (2006.01)i; E21B 49/10 (2006.01)i; G01N 1/08 (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:
Korean utility models and applications for utility models
Japanese utility models and applications for utility models
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
eKOMPASS(KIPO internal) & Keywords: centrifuge, sample, holder, permeability, capillary pressure, second and rotation


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US 6415649 B1 (SPINLER, EUGENE A. et al.) 09 July 2002 See column 1, lines 8-17; column 4, line 4 - column 5, line 36; column 10, li nes 30-44; figures 1(b)-1(c); and table 1.
US 2008-0193511 A1 (MASSING, ULRICH) 14 August 2008 See paragraphs [0036]-[0037], [0071]-[0072], [0075] and figures 1-2.
US 2006-0116828 A1 (CHEN, QUAN et al.) 01 June 2006 See paragraphs [0024]-[0043], [0091]-[0092] and figures 1A-3B.
US 2007-0002681 A1 (VANDERBILT, DAVID P. et al.) 04 January 2007 See paragraphs [0014]-[0034] and figures 1-2.
KR 10-1288969 B1 (SAMSUNG ELECTRONICS CO., LTD.) 24 July 2013 See paragraphs [0045]-[0048] and figures 1-4.
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
US 6415649 B1
09 July 2002
US 6178807 B1
US 6178807 B2
30 January 2001
30 January 2001
US 2008-0193511 A1
14 August 2008
AT 545409 T
DK 2263653 T3
DK 1838286 T3
EP 2263653 B1
EP 2263653 A3
EP 2263653 A2
EP 1838286 B2
EP 1838286 B1
EP 1838286 A2
EP 1674081 A1
WO 2006-069985 A3
WO 2006-069985 A2
15 March 2012
21 May 2013
29 May 2012
13 February 2013
29 December 2010
22 December 2010
01 November 2017
15 February 2012
03 October 2007
28 June 2006
26 October 2006
06 July 2006
US 2006-0116828 A1
01 June 2006
AT 528659 T
CA 2524993 A1
CA 2524993 C
EP 1655617 A2
EP 1655617 A3
EP 1655617 B1
US 7352179 B2
15 October 2011
29 April 2006
14 October 2014
10 May 2006
17 May 2006
12 October 2011
01 April 2008
US 2007-0002681 A1
04 January 2007
KR 10-1288969 B1
24 July 2013
US 7727136 B2
US 2007-0238598 A1
KR 10-2007-0099995 A
01 June 2010
11 October 2007
10 October 2007
Name and mailing address of the ISA/:
Korean Intellectual Property Office
189 Cheongsa-ro, Seo-gu, Daejeon Metropolitan City, 302-701
Republic of Korea
Facsimile No. +82-42-481-8578
Date of the actual completion of the international search:
05 February 2020
Date of mailing of the international search report:
05 February 2020
Authorized officer:
PARK, Tae Wook
Telephone No. +82-42-481-3405
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