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International application No. Applicant's or agent's file reference
PCT/US2016/035459 SSV4-58912WO
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
02 June 2016 02 July 2015
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 34/06 (2006.01)i; F16K 1/18 (2006.01)i; E21B 17/00 (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 modelsJapanese 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: wellbore, electrically actuated safety valve, flapper, flow tube, solenoid, collet, motor, linear actuator, and follower


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US 6253843 B1 (RAWSON et al.) 03 July 2001 See column 4, lines 15-42, column 8, lines 49-65 and figures 2A-2B.
US 4796708 A (LEMBCKE, JEFFREY J.) 10 January 1989 See column 5, lines 42-63, column 6, line 60 – column 7, line 27.
US 2014-0000870 A1 (VICK, JR. et al.) 02 January 2014 See abstract and paragraph [0009].
US 2004-0173362 A1 (WAITHMAN et al.) 09 September 2004 See paragraphs [0016]-[0035] and figures 1-5.
US 2002-0108747 A1 (DIETZ et al.) 15 August 2002 See paragraphs [0014]-[0041] and figures 1-5.
Special categories of cited documents:
document defining the general state of the art which is not considered to be of particular relevance
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 6253843 B1
03 July 2001
CA 2244942 A1
CA 2244942 C
GB 2326181 A
GB 2326181 B
NO 315815 B1
NO 983630 A
WO 98-26156 A1
18 June 1998
08 February 2005
16 December 1998
04 October 2000
27 October 2003
07 October 1998
18 June 1998
US 4796708 A
10 January 1989
GB 2252582 A
12 August 1992
US 2014-0000870 A1
02 January 2014
AU 2012-383527 A1
AU 2012-383527 B2
SG 11201408048 A
WO 2014-003731 A1
27 November 2014
10 December 2015
29 January 2015
03 January 2014
US 2004-0173362 A1
09 September 2004
US 2002-0108747 A1
15 August 2002
EP 1236862 A2
EP 1236862 A3
US 6619388 B2
04 September 2002
11 February 2004
16 September 2003
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:
27 September 2016
Date of mailing of the international search report:
27 September 2016
Authorized officer:
LEE, Hun Gil
Telephone No. +82-42-481-8525
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