公开(公告)号：WO2004007384A1

公开(公告)日：2004-01-22

申请号：PCT/EP2003/007275

申请日：2003-07-07

Applicant: NOVARA TECHNOLOGY S.R.L. ,  COSTA, Fulvio ,  COSTA, Lorenzo

Inventor： COSTA, Fulvio ,  COSTA, Lorenzo

IPC: C03C1/00

CPC classification number: C03C1/008 ,  C23C18/1216 ,  C23C18/1254

Abstract: Process for the preparation and the deposition of vitreous films on substrates comprising: the dissolution of one or more metal alkoxides in aprotic solvent, the hydrolysis of the resulting solution, yhe eventual removalof the formed alcohol, the deposition of the resulting sol on the substrate surface of interest and the final drying of the film.

Abstract translation: 用于在基材上制备和沉积玻璃膜的方法，包括：将一种或多种金属醇盐溶解在非质子溶剂中，所得溶液的水解，最终除去形成的醇，将所得溶胶沉积在基材表面上 感兴趣的和最后的干燥的电影。

公开(公告)号：EP1320515A1

公开(公告)日：2003-06-25

申请号：EP01943533.8

申请日：2001-06-21

Applicant: Novara Technology S.R.L.

Inventor： COSTA, Lorenzo ,  SPARPAGLIONE, Massimo

IPC: C03C1/00 ,  C01B33/158 ,  C01B33/16

CPC classification number: C01B33/16 ,  C01B33/1585 ,  C03B19/12 ,  C03C1/006 ,  Y02P20/544

Abstract: It is described a sol-gel process that allows to obtain dry gels, and possibly the corresponding dense glassy bodies, having higher dimensions compared to similar known processes.

公开(公告)号：EP1583721A1

公开(公告)日：2005-10-12

申请号：EP03785922.0

申请日：2003-12-23

Applicant: Novara Technology S.R.L.

Inventor： BOARA, Giulio ,  SPARPAGLIONE, Massimo ,  COSTA, Lorenzo

IPC: C03C1/00 ,  C03B19/12 ,  C03C3/06

CPC classification number: C03C3/06 ,  C03B19/12 ,  C03C1/006 ,  C03C2203/26 ,  C03C2203/27 ,  C03C2203/34 ,  C03C2203/52

Abstract: Glassy articles are prepared by subjecting to hydrolysis and policondensation a solution or suspension of a suitable precursor, mainly comprising a silicon alkoxide, and by drying the obtained gel in a pressure chamber, the gel solvent having been substituted by a non-protic solvent, mainly acetone, under nitrogen flowing, at temperature and pressure conditions lower than the gel solvent critical values. The dried gel is then densified by a thermal treatment.

公开(公告)号：EP1521724A1

公开(公告)日：2005-04-13

申请号：EP03763735.2

申请日：2003-07-07

Applicant: Novara Technology S.R.L.

Inventor： COSTA, Fulvio ,  COSTA, Lorenzo

IPC: C03C1/00 ,  C03B8/02

CPC classification number: C03C1/008 ,  C23C18/1216 ,  C23C18/1254

Abstract: Process for the preparation and the deposition of vitreous films on substrates comprising: the dissolution of one or more metal alkoxides in aprotic solvent, the hydrolysis of the resulting solution, yhe eventual removalof the formed alcohol, the deposition of the resulting sol on the substrate surface of interest and the final drying of the film.

公开(公告)号：EP1412296A2

公开(公告)日：2004-04-28

申请号：EP02745248.1

申请日：2002-04-30

Applicant: Novara Technology S.R.L.

Inventor： COSTA, Lorenzo ,  COSTA, Fulvio ,  CREPALDI, Matteo

IPC: C03B19/12 ,  C03B37/016

CPC classification number: C03C3/04 ,  C03B19/12 ,  C03B37/016 ,  C03C13/00

Abstract: Sol-gel process for the production of optical fiber preforms or overcladdings by preparing a sol, gelling the sol, drying the wet gel to a dry porous gel and densifying the dry gel to fully dense glass, wherein during the calcination treatment from 350 °C to 900 °C to remove organic impurities in the dry gel, it is carried out at least one reduced-pressure phase at a pressure comprised between about 0.01 and 0.5 bar.

公开(公告)号：EP1113987A1

公开(公告)日：2001-07-11

申请号：EP99946432.4

申请日：1999-09-06

Applicant: Novara Technology S.R.L.

Inventor： COSTA, Lorenzo ,  COSTA, Pier, Paolo ,  GRANDI, Stefania

IPC: C01B33/12 ,  C23C18/12

CPC classification number: C03C1/008 ,  C23C18/1212 ,  C23C18/1254 ,  C23C18/1279 ,  Y10T428/2495

Abstract: It is described a sol-gel process allowing the preparation, on a substrate, of glassy films of silicon oxide or mixed oxides based on silicon oxide, of thickness above 1 micrometer, generally between 2 and 20 micrometers, and characterised by absence of defects, that turn out to be particularly suitable as waveguides in flat optical devices.

公开(公告)号：EP1521721A1

公开(公告)日：2005-04-13

申请号：EP03738079.7

申请日：2003-06-24

Applicant: Novara Technology S.R.L.

Inventor： COSTA, Lorenzo ,  COSTA, Fulvio

IPC: C01B33/158 ,  B01J13/00

CPC classification number: B01J13/0091 ,  C01B33/1585

Abstract: The present invention is concerned with a method for the preparation of aerogels that includes a phase of exchange with the liquid present in the aquagel by the liquid xenon and the subsequent extraction thereof.

公开(公告)号：EP1439902A1

公开(公告)日：2004-07-28

申请号：EP01274643.4

申请日：2001-11-03

Applicant: Novara Technology S.R.L.

Inventor： COSTA, Lorenzo ,  COSTA, Pier, Paolo ,  COSTA, Fulvio

IPC: B01J13/00 ,  H01L33/00

CPC classification number: B01J13/0056 ,  B01J13/0069

Abstract: It is described a process based on sol-gel chemistry suitable to the production of nanocomposite materials being photoluminescent at ambient temperature, comprising silicon grains of dimension of nanometers embedded in a silica matrix.

公开(公告)号：EP1175377B1

公开(公告)日：2003-11-12

申请号：EP00911254.1

申请日：2000-03-08

Applicant: Novara Technology S.R.L.

Inventor： COSTA, Fulvio ,  COSTA, Pierpaolo ,  COSTA, Lorenzo

IPC: C03B37/016 ,  C03B19/12

CPC classification number: C03B19/12 ,  C03B37/016

公开(公告)号：EP1667938A1

公开(公告)日：2006-06-14

申请号：EP04765097.3

申请日：2004-09-11

Applicant: Novara Technology S.R.L.

Inventor： COSTA, Fulvio ,  GINI, Lucia ,  RÜCKEMANN, Andreas ,  COSTA, Lorenzo

IPC: C03C1/00 ,  C03B19/12 ,  C03C3/06 ,  G21F9/30

CPC classification number: C03C1/002 ,  C03B19/12 ,  C03C1/006 ,  C03C3/06 ,  C03C14/008 ,  C03C2203/26 ,  C03C2203/27 ,  C03C2203/34 ,  C03C2203/52 ,  C03C2214/14 ,  C03C2214/32 ,  G21F9/12 ,  G21F9/14 ,  G21F9/30 ,  G21F9/305

Abstract: Sol-gel-process to prepare aerogels comprising the preparation of a solution of a compound having the formula Xm-M-(OR)n-m, the hydrolysis of the compound to give a sol, gelation, drying, densifying and sintering. This method can be used to treat radioactive residues constituted by aqueous solutions of radioactive substances.