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1. WO2020156891 - PROCÉDÉ DE PRÉPARATION D'ALUMINE ALPHA DE GRANDE SURFACE ET SON UTILISATION


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INTERNATIONAL SEARCH REPORT (ISR)
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/EP2020/051445 A490WO
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
21 January 2020 29 January 2019
Applicant
STUDIENGESELLSCHAFT KOHLE MBH
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)).
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)).
c.
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
a.
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.
b.
none of the figures is to be published with the abstract.

A. CLASSIFICATION OF SUBJECT MATTER

     C01F 7/44 (2006.01)i; B01J 21/04 (2006.01)i; B01J 37/00 (2006.01)i; B01J 35/00 (2006.01)i; B01J 35/10 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC

B. FIELDS SEARCHED

Minimum documentation searched (classification system followed by classification symbols):
     C01F; 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, COMPENDEX, INSPEC, WPI Data

C. DOCUMENTS CONSIDERED TO BE RELEVANT

Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
(1)
X
TONEJC A ET AL, "Comparison of the transformation sequence from gamma-AlOOH (boehmite) to alpha-Al2O3 (corundum) induced by heating and by ball milling", 15 May 1994 (1994-05-15), Vol. 181-182, page 1227-1231,
XP024168169
[retrieved on  1994-05-15]
1-8,12
Y
the whole document
9-11,13
(2)
X
EP 0554908 A1 (NORTON CO [US]) 11 August 1993 (1993-08-11)
12,14
examples
page 2, lines 56-57
(3)
X
MA H ET AL, "Synthesis and processing of nano-alpha-Al2O3 powders", TITANIUM POWDER METALLURGY AND ADDITIVE MANUFACTURING : 4TH INTERNATIONAL CONFERENCE ON TITANIUM POWDER METALLURGY & ADDITIVE MANUFACTURING (PMTI 2017) : SELECTED, PEER REVIEWED PAPERS FROM THE 4TH INTERNATIONAL CONFERENCE ON POWDER METALLURGY OF TIT,Vol. 206-213, 09 September 2001 (2001-09-09), page 43-46,
XP008025131
ISBN: 9783035711639
12,14
table 1
final paragraph (p. 46)
(4)
Y
FERNANDO D. CORTES-VEGA ET AL, "Room-temperature synthesis of chi-Al2O3 and ruby (alpha-Cr:Al2O3)", CRYSTENGCOMM,Vol. 20, No. 25, 21 May 2018 (2018-05-21), page 3505-3511,
XP055603189
9-11,13
the whole document
(5)
A
TONEJC A ET AL, "Equivalence of ball milling and thermal treatment for phase transitions in the Al2O3 system", February 1994 (1994-02), Vol. 204, No. 1-2, page L1-L3,
XP024176594
[retrieved on  1994-02-01]
1-14
the whole document
(6)
A
TONEJC A ET AL, "TRANSFORMATION OF -ALOOH (BOEHMITE) AND AL(HO)3 (GIBBSITE) TO X-AL2O3 (CORUNDUM) INDUCED BY HIGH ENERGY BALL MILLING", JOURNAL OF MATERIALS SCIENCE LETTERS, CHAPMAN AND HALL LTD. LONDON, GB,Vol. 13, No. 7, 01 April 1994 (1994-04-01), page 519/520,
XP000435080
1-14
the whole document
*
Special categories of cited documents:
"A"
document defining the general state of the art which is not considered to be of particular relevance
"D"
document cited by the applicant in the international application
"E"
earlier application or patent but published on or after the international filing date
"L"
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)
"O"
document referring to an oral disclosure, use, exhibition or other means
"P"
document published prior to the international filing date but later than the priority date claimed
"T"
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
"X"
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
"Y"
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

D. INFORMATION ON PATENT FAMILY MEMBERS

Patent document cited in search report Publication date
(day/month/year)
Patent family member(s) Publication date
(day/month/year)
EP 0554908 A1
11 August 1993
AT 139982 T
AU 650382 B2
BR 9300492 A
CA 2088282 A1
DE 69303383 T2
EP 0554908 A1
JP 2944839 B2
JP H05345611 A
US 6048577 A
15 July 1996
16 June 1994
10 August 1993
06 August 1993
06 February 1997
11 August 1993
06 September 1999
27 December 1993
11 April 2000
Name and mailing address of the ISA/:
European Patent Office
P.B. 5818, Patentlaan 2, 2280 HV Rijswijk,
Netherlands
Telephone No. (+31-70)340-2040
Facsimile No. (+31-70)340-3016
Date of the actual completion of the international search:
08 October 2020
Date of mailing of the international search report:
19 October 2020
Authorized officer:
Stratford, Katja
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