Certains contenus de cette application ne sont pas disponibles pour le moment.
Si cette situation persiste, veuillez nous contacter àObservations et contact

Avertissement La version image (PDF) disponible sur le site PATENTSCOPE est la version officielle. Cette version html en ligne est fournie pour aider les utilisateurs. Malgré le grand soin apporté à la compilation pour assurer une représentation précise et exacte des données figurant sur le document imprimé/les images, des erreurs ou omissions ne peuvent être exclues en raison des processus de transmission, de conversion de données et des limitations inhérentes aux processus de traduction automatique (éventuellement) utilisés. Les liens hypertexte suivis de ce symbole sont des ressources externes qui ne sont pas contrôlées par l’OMPI. L'OMPI décline toute responsabilité concernant les points mentionnés ci-dessus.

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/EP2018/073596 COV179046-WO01
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
03 September 2018 06 September 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. ____________
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.


     B01J 8/02 (2006.01)i; C07C 263/10 (2006.01)i; C07C 265/14 (2006.01)i; C01B 32/80 (2017.01)i
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
     B01J; C07C; C01B
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 2016109987 A1 (WANHUA CHEMICAL GROUP CO LTD [CN]) 14 July 2016 (2016-07-14)
figure 1
US 2017096389 A1 (KNAUF THOMAS [DE] ET AL) 06 April 2017 (2017-04-06)
the whole document
US 4064218 A (SCHOLZ HEINRICH ET AL) 20 December 1977 (1977-12-20)
the whole document
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 2016109987 A1
14 July 2016
CN 105817183 A
EP 3243563 A1
US 2017348661 A1
WO 2016109987 A1
03 August 2016
15 November 2017
07 December 2017
14 July 2016
US 2017096389 A1
06 April 2017
CN 106458864 A
EP 3122720 A1
JP 2017512793 A
KR 20160137544 A
US 2017096389 A1
WO 2015144682 A1
22 February 2017
01 February 2017
25 May 2017
30 November 2016
06 April 2017
01 October 2015
US 4064218 A
20 December 1977
BE 844142 A
CH 620370 A5
DE 2531545 A1
FR 2317959 A1
GB 1547482 A
IT 1065068 B
JP S602090 B2
JP S5228492 A
NL 7607853 A
US 4064218 A
17 January 1977
28 November 1980
03 February 1977
11 February 1977
20 June 1979
25 February 1985
19 January 1985
03 March 1977
18 January 1977
20 December 1977
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:
18 December 2018
Date of mailing of the international search report:
02 January 2019
Authorized officer:
Pasanisi, Andrea
Top    Part 1: 1 2 3 4 5 6         Part 2: A B C D E