Patents Assigned to Novara Technology S.r.l.
  • Method for the preparation of aerogels
    Patent number: 7378072
    Abstract: A method for the preparation of aerogels that involves the exchange of the liquid present in the aquagel with xenon and the subsequent extraction thereof.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: May 27, 2008
    Assignee: Novara Technology S.R.L.
    Inventors: Lorenzo Costa, Fulvio Costa
  • Sol-gel process for the production of glassy articles
    Publication number: 20060059709
    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.
    Type: Application
    Filed: December 23, 2003
    Publication date: March 23, 2006
    Applicant: NOVARA TECHNOLOGY S.R.L.
    Inventors: Giulio Boara, Massimo Sparpaglione, Lorenzo Costa
  • Method for the preparation of aerogels
    Publication number: 20050244323
    Abstract: A method for the preparation of aerogels that involves the exchange of the liquid present in the aquagel with xenon and the subsequent extraction thereof.
    Type: Application
    Filed: June 24, 2003
    Publication date: November 3, 2005
    Applicant: Novara Technology S.R.L.
    Inventors: Lorenzo Costa, Fulvio Costa
  • Process for preparing silica or silica-based thick vitreous films according to the sol-gel technique and thick films thereby obtained
    Patent number: 6852300
    Abstract: A sol-gel process allowing 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 characterized by absence of defects, that turn out to be particularly suitable as waveguides in flat optical devices.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: February 8, 2005
    Assignee: Novara Technology S.r.l.
    Inventors: Lorenzo Costa, Pier Paolo Costa, Stefania Grandi
  • Sol-gel process for the production of manufactures containing an incompressible insert and manufactures thereby obtained
    Patent number: 6799442
    Abstract: A sol-gel process is described that allows dry gels to be produced, and where necessary, the corresponding dense vitreous bodies, around an incompressible insert. A particular feature of the process is the step of rotating a container holding the sol and incompressible insert throughout the gelling step under such conditions that a wet gel adhering to the insert is produced, which is then dried. The process is useful particularly for the production of preforms for optical fibers, which are also claimed.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: October 5, 2004
    Assignee: Novara Technology S.r.l.
    Inventors: Fulvio Costa, Pierpaolo Costa, Lorenzo Costa
  • Process for preparing silica or silica-based thick vitreous films according to the sol-gel technique and thick films thereby obtained
    Patent number: 6562408
    Abstract: 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 characterized by absence of defects, that turn out to be particularly suitable as waveguides in flat optical devices.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: May 13, 2003
    Assignee: Novara Technology S.R.L.
    Inventors: Lorenzo Costa, Pier Paolo Costa, Stefania Grandi