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International application No. Applicant's or agent's file reference
PCT/US2018/020001 86227WO02
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
27 February 2018 28 February 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.


     D04H 1/425 (2012.01)i; D06M 15/00 (2006.01)i; D01F 2/28 (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):
     D04H; D06M; D01F
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.
WO 9302247 A1 (EASTMAN KODAK CO [US]) 04 February 1993 (1993-02-04)
page 1, lines 5-31
page 3, line 6 - page 4, line 24
page 5, lines 19-34
page 7, line 19
page 9, lines 26-34
page 11, lines 5-30
page 14, line 1
page 23, lines 10-35
page 25, lines 19-31
page 26, lines 13-33
page 27, lines 10-17
page 28, lines 15-19
page 29, lines 1-22
page 54, line 8 - page 56, line 9
EP 3128070 A1 (DAICEL CORP [JP]) 08 February 2017 (2017-02-08)
page 2, paragraphs 1,3
page 3, paragraph 8 - page 6, paragraph 54
page 8, paragraph 69-74
CA 677852 A (CELANESE CORP) 14 January 1964 (1964-01-14)
pages 2-5,7,9
EP 2907493 A1 (LIVEDO CORP [JP]) 19 August 2015 (2015-08-19)
page 2, paragraph 1
page 15, paragraph 128
page 16, paragraph 131-140
page 17, paragraph 143
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
WO 9302247 A1
04 February 1993
AT 136334 T
CA 2114026 A1
DE 69209649 D1
DE 69209649 T2
EP 0595958 A1
ES 2085634 T3
JP 3087909 B2
JP 3553852 B2
JP H07504233 A
JP 2000313894 A
JP 2000313895 A
US 5234720 A
US 5372739 A
US 5677058 A
WO 9302247 A1
15 April 1996
04 February 1993
09 May 1996
26 September 1996
11 May 1994
01 June 1996
18 September 2000
11 August 2004
11 May 1995
14 November 2000
14 November 2000
10 August 1993
13 December 1994
14 October 1997
04 February 1993
EP 3128070 A1
08 February 2017
CN 106133236 A
EP 3128070 A1
JP 2015196915 A
US 2017020749 A1
WO 2015152335 A1
16 November 2016
08 February 2017
09 November 2015
26 January 2017
08 October 2015
CA 677852 A
14 January 1964
EP 2907493 A1
19 August 2015
CN 104736116 A
EP 2907493 A1
JP 6128791 B2
JP 2014079324 A
TW 201420088 A
US 2016199527 A1
WO 2014061379 A1
24 June 2015
19 August 2015
17 May 2017
08 May 2014
01 June 2014
14 July 2016
24 April 2014
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:
08 May 2018
Date of mailing of the international search report:
17 May 2018
Authorized officer:
Beins, Ulrika
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