Patents by Inventor Johan Evert Ten Elshof

Johan Evert Ten Elshof has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20170362740
    Abstract: The present application discloses and claims a method to make a flexible ceramic fibers (Flexiramics™) and polymer composites. The resulting composite has an improved mechanical strength (tensile) when compared with the Flexiramics™ alone. Several different polymers can be used, both thermosets and thermoplastics. Flexiramics™ has unique physical characteristics and the composite materials can be used for numerous industrial and laboratory applications.
    Type: Application
    Filed: June 16, 2016
    Publication date: December 21, 2017
    Inventors: Gerard Cadafalch Gazquez, Johan Evert ten Elshof, Roger Brunet Espinosa
  • Patent number: 8709254
    Abstract: A microporous organic-inorganic hybrid membrane based on silica of the invention has an average pore diameter of less than 0.6 nm, and comprises bridging organosilane moieties of the formula ?O1.5Si—CHR—SiO1.5? or ?O1.5Si—CH(CH3)—SiO1.5?. The membrane can be used in the separation of hydrogen from mixtures comprising hydrogen and CH4, CO2, CO, N2, and the like, and in the separation of water from alcohols having 1-3 carbon atoms, optionally in the presence of an inorganic or organic acid.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: April 29, 2014
    Assignee: Stichting Energieonderzoek Centrum Nederland
    Inventors: Rob Kreiter, Hessel Lennart Castricum, Jaap Ferdinand Vente, Johan Evert Ten Elshof, Maria Dirkje Anna Rietkerk, Henk Martin Veen
  • Publication number: 20130126432
    Abstract: Selective retaining a relatively hydrophilic molecule from a mixture of a relatively hydrophobic molecule and the relatively hydrophilic molecule can be achieved using a hydrophobic, microporous hybrid membrane based on silica, wherein at least 25% of the silicon atoms is bound to a bridging C1-C12-hyrdocarbylene group. The average number of carbon atoms of the bridging groups and any additional monovalent organic groups, taken together, is at least 3.5. The membrane can be part of a production facility for separating alcohol/water mixtures.
    Type: Application
    Filed: May 16, 2011
    Publication date: May 23, 2013
    Applicant: Stichting Energieonderzoek Centrum Nederland
    Inventors: Robert Kreiter, Goulven Gildas Paradis, Jaap Ferdinand Vente, Hessel Lennart Castricum, Johan Evert Ten Elshof
  • Patent number: 8277661
    Abstract: A hydrothermally stable, microporous organic-inorganic hybrid membrane based on silica, having an mean pore diameter of between 0.2 and 1.5 nm, is characterised in that between 5 and 40 mole % of the Si—O—Si bonds have been replaced by moieties having the one of the formulas: Si—{[CmH(n-1)X]—Si—}q, Si—[CmH(n-2)X2]—Si or Si—CmHn—Si{(CmHn)—Si—}y in which m=1-8, n=2m, 2m?2, 2m?4, 2m?6 or 2m?8; provided that n?2, X=H or (CH2)pSi, p=0 or 1, and q=1, 2, 3 or 4. The membrane can be produced by acid-catalysed hydrolysis of suitable bis-silane precursors such as bis(trialkoxysily)alkanes, preferably in the presence of monoorganyl-silane precursors such as trialkoxy-alkylsilanes.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: October 2, 2012
    Assignee: Stichting Energieonderzoek Centrum Nederland
    Inventors: Ashima Sah, Hessel Lennart Castricum, Jaap Ferdinand Vente, David Hermanus Adrianus Blank, Johan Evert Ten Elshof
  • Publication number: 20110259825
    Abstract: A microporous organic-inorganic hybrid membrane based on silica of the invention has an average pore diameter of less than 0.6 nm, and comprises bridging organosilane moieties of the formula ?O1.5Si—CHR—SiO1.5? or ?O1.5Si—CH(CH3)—SiO1.5?. The membrane can be used in the separation of hydrogen from mixtures comprising hydrogen and CH4, CO2, CO, N2, and the like, and in the separation of water from alcohols having 1-3 carbon atoms, optionally in the presence of an inorganic or organic acid.
    Type: Application
    Filed: July 14, 2009
    Publication date: October 27, 2011
    Inventors: Rob Kreiter, Hessel Lennart Castricum, Jaap Ferdinand Vente, Johan Evert Ten Elshof, Maria Dirkje Anna, Henk Martin Veen
  • Publication number: 20090246114
    Abstract: A hydrothermally stable, microporous organic-inorganic hybrid membrane based on silica, having an mean pore diameter of between 0.2 and 1.5 nm, is characterised in that between 5 and 40 mole % of the Si—O—Si bonds have been replaced by moieties having the one of the formulas: Si—{[CmH(n-1)X]—Si—}q, Si—[CmH(n-2)X2]—Si or Si—CmHn—Si{(CmHn)—Si—}y in which m=1-8, n=2m, 2m-2, 2m-4, 2m-6 or 2m-8; provided that n?2, X=H or (CH2)pSi, p=0 or 1, and q=1, 2, 3 or 4. The membrane can be produced by acid-catalysed hydrolysis of suitable bis-silane precursors such as bis(trialkoxysily)alkanes, preferably in the presence of monoorganyl-silane precursors such as trialkoxy-alkylsilanes.
    Type: Application
    Filed: January 16, 2007
    Publication date: October 1, 2009
    Applicant: STICHTING ENERGIEONDERZOEK CENTRUM NEDERLAND
    Inventors: Ashima Sah, Hessel Lennart Castricum, Jaap Ferdinand Vente, David Hermanus Adrianus Blank, Johan Evert Ten Elshof