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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/GB2019/053438 P60231WO
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
05 December 2019 07 December 2018
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.

Apparatus (1) for manufacturing a three-dimensional object from a powder, the apparatus (1) comprising: a build bed (201) having a build area (190), wherein successive layers of said three-dimensional object are formed in the build bed (201); a powder distribution sled (300) operable to distribute a layer of powder within the build area (190), the powder distribution sled (300) being driveable in a first direction along a first axis, across the build area (190), and driveable in a second direction, opposite to the first direction, along the first axis; and a print sled (350) operable to deposit a pattern of fluid onto the layer of powder within the build area (190) to define the cross section of said object in said layer, the print sled (350) being driveable in the first direction along a second axis across the build area, and driveable in the second direction along the second axis; wherein the first axis is parallel to, or coaxial with, the second axis; wherein the print sled (350) comprises one or more droplet deposition heads (370) for depositing the fluid, a first radiation source assembly (L1), and a second radiation source assembly (L2); wherein the powder distribution sled (300) comprises a powder distribution device (320) for distributing the powder, a third radiation source assembly (L3) and a fourth radiation source assembly (L4); and wherein each of the first, second, third and fourth radiation source assemblies is operable to both preheat and sinter powder within the build area (190). A method of manufacturing a three-dimensional object from a powder using such apparatus is also provided.

6. Drawings
The figure of the drawings to be published with the abstract is Figure No.     3    
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.


     B29C 64/165 (2017.01)i; B33Y 10/00 (2015.01)i; B33Y 30/00 (2015.01)i
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
     B29C; B33Y
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 2018075033 A1 (HEWLETT PACKARD DEVELOPMENT CO [US]) 26 April 2018 (2018-04-26)
figures 1-10
US 2017368748 A1 (DE PENA ALEJANDRO MANUEL [ES] ET AL) 28 December 2017 (2017-12-28)
figures 1-10
paragraphs [0019], [0021], [0034] - [0039]
paragraph [0100]
US 2017355137 A1 (EDERER INGO [DE] ET AL) 14 December 2017 (2017-12-14)
figures 10, 12
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
WO 2018075033 A1
26 April 2018
BR 112019003589 A2
BR 112019003681 A2
CN 109562564 A
CN 109562569 A
EP 3487681 A1
EP 3487683 A1
JP 2019524508 A
JP 2019524517 A
KR 20190029675 A
KR 20190029694 A
US 2019039303 A1
WO 2018075033 A1
WO 2018075087 A1
21 May 2019
21 May 2019
02 April 2019
02 April 2019
29 May 2019
29 May 2019
05 September 2019
05 September 2019
20 March 2019
20 March 2019
07 February 2019
26 April 2018
26 April 2018
US 2017368748 A1
28 December 2017
BR 112017015820 A2
CN 107223084 A
EP 3250363 A1
JP 6460554 B2
JP 2018501994 A
KR 20170102908 A
US 2017368748 A1
WO 2016119898 A1
17 July 2018
29 September 2017
06 December 2017
30 January 2019
25 January 2018
12 September 2017
28 December 2017
04 August 2016
US 2017355137 A1
14 December 2017
CN 107206677 A
DE 102015006533 A1
EP 3237181 A1
KR 20170097055 A
US 2017355137 A1
WO 2016101942 A1
26 September 2017
23 June 2016
01 November 2017
25 August 2017
14 December 2017
30 June 2016
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:
12 March 2020
Date of mailing of the international search report:
20 March 2020
Authorized officer:
Sacepe, Nicolas
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