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Part 1:  1  2  3  4  5  6          Part 2:  A  B  C  D  E 
International application No. Applicant's or agent's file reference
PCT/US2018/018675 EBH-112-PCT
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
20 February 2018 30 March 2017
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.


     B01D 3/00 (2006.01)i; B01D 3/16 (2006.01)i; B01J 19/30 (2006.01)i; B01J 19/32 (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):
     B01D; B01J
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.
US 7297236 B1 (VANDER GRIEND DENNIS LEE [US]) 20 November 2007 (2007-11-20)
column 4, line 61 - column 8, line 55; figure 3
US 9499839 B2 (HAMRICK EDWARD BRIAN [US]) 22 November 2016 (2016-11-22)
figure 1
WO 2011137150 A1 (DU PONT [US]; HENNESSEY SUSAN MARIE [US]; MITCHELL ANNEMARIE [US]; STO) 03 November 2011 (2011-11-03)
the whole document
US 2007007201 A1 (LUPTON FRANCIS S [US]) 11 January 2007 (2007-01-11)
figures 1-6
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 7297236 B1
20 November 2007
US 7297236 B1
US 7572353 B1
20 November 2007
11 August 2009
US 9499839 B2
22 November 2016
BR 112016005352 A2
CN 107109440 A
EP 3140411 A1
RU 2642296 C1
US 2016068870 A1
US 2016097062 A1
WO 2016140711 A1
WO 2016140721 A1
24 January 2017
29 August 2017
15 March 2017
24 January 2018
10 March 2016
07 April 2016
09 September 2016
09 September 2016
WO 2011137150 A1
03 November 2011
AU 2011245408 A1
BR 112012027726 A2
CA 2791802 A1
CN 102947454 A
DK 2563924 T3
EP 2563924 A1
ES 2539370 T3
JP 2013524839 A
MY 160090 A
US 2012178976 A1
WO 2011137150 A1
30 August 2012
24 November 2015
03 November 2011
27 February 2013
22 June 2015
06 March 2013
30 June 2015
20 June 2013
28 February 2017
12 July 2012
03 November 2011
US 2007007201 A1
11 January 2007
AU 2006269312 A1
CN 101263088 A
EP 1901998 A1
JP 4921467 B2
JP 2009500173 A
KR 20080040688 A
TW 200804201 A
US 2007007201 A1
WO 2007008675 A1
18 January 2007
10 September 2008
26 March 2008
25 April 2012
08 January 2009
08 May 2008
16 January 2008
11 January 2007
18 January 2007
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:
24 April 2018
Date of mailing of the international search report:
04 May 2018
Authorized officer:
Thibault, Valerie
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