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International application No. Applicant's or agent's file reference
PCT/GB2020/050846 P075410WO
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
30 March 2020 05 April 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.     1B    
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.


     E04B 1/343 (2006.01)i; E04B 1/58 (2006.01)i; F16B 7/04 (2006.01)i; F16B 21/16 (2006.01)i; F16B 35/06 (2006.01)i; E04B 1/24 (2006.01)n
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
     E04B; F16B
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 2005076484 A1 (SUSSENBACH RAINER [US] ET AL) 14 April 2005 (2005-04-14)
paragraph [0022] - paragraph [0043]; figures 1-6
US 5845377 A (BIBEAULT MARK L [US]) 08 December 1998 (1998-12-08)
column 8, line 8 - column 10, line 18; figures 1-7, 20
column 13, line 32 - line 49; figures 21, 22
column 11, line 35 - column 12, line 41; figures 13-19
EP 2982808 A1 (PROLYTE GROUP B V [NL]) 10 February 2016 (2016-02-10)
paragraph [0052] - paragraph [0083]; figures 1-9
EP 0233113 A1 (AEROSPATIALE [FR]) 19 August 1987 (1987-08-19)
column 5, line 30 - column 7, line 52; figures 4-6
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 2005076484 A1
14 April 2005
DE 20315778 U1
EP 1524440 A1
US 2005076484 A1
11 December 2003
20 April 2005
14 April 2005
US 5845377 A
08 December 1998
EP 2982808 A1
10 February 2016
EP 2982808 A1
NL 2013311 A
PL 2982808 T3
US 2016040701 A1
10 February 2016
08 July 2016
29 September 2017
11 February 2016
EP 0233113 A1
19 August 1987
AT 44355 T
DE 3760292 D1
EP 0233113 A1
FR 2593436 A1
PT 84220 A
15 July 1989
10 August 1989
19 August 1987
31 July 1987
18 September 1987
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:
19 June 2020
Date of mailing of the international search report:
29 June 2020
Authorized officer:
Galanti, Flavio
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