Patents by Inventor Walter Caseri

Walter Caseri 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).

  • Organic-inorganic hybrid transistors
    Publication number: 20060151778
    Abstract: A new class of organic-inorganic materials for thin film semiconducting devices that exhibit good stability in air and water, as well as a new purification technique for thin film semiconducting devices that contain impurities, such as ionic species.
    Type: Application
    Filed: July 3, 2003
    Publication date: July 13, 2006
    Inventors: Margherita Fontana, Henning Sirringhaus, Paul Smith, Natalie Stutzmann, Walter Caseri
  • Silicon or silica substrate with a modified surface, process for producing the same, new orthoesters and process for producing the same
    Patent number: 5709715
    Abstract: The silicon or silica substrates described have a modified surface of a new type occupied by the alcohol fraction of an orthoester. The alcohol fraction may be saturated or unsaturated. The surface of the substrate is modified by being treated with an orthoester, the water being eliminated from the surface by hydrolysis and then replaced by the resulting alcohol or silylether. Besides many other compounds, new orthoesters having the formula R.sup.1 C?OCH.sub.2 --CH.sub.2 --O--CO--CH.dbd.CH.sub.2 !.sub.3, in which R.sup.1 stands for hydrogen or for a clearable organic residue, R stands for (CH.sub.2).sub.n, in which n stands for an integer between 1 and 18, and new orthoesters having the formula (I), are particularly appropriate. In the formula (I), R.sup.1 stands for hydrogen or an organic residue, R.sup.3 stands for hydrogen or an alkyl group with 1 to 6 carbon atoms; and R.sup.4 stands for hydrogen, an alkyl group or an alkyl group or a phenyl group.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: January 20, 1998
    Assignee: Owens-Corning Fiberglas Technology Inc.
    Inventors: Bruno Guidotti, Walter Caseri, Ulrich Suter, Wolfgang Saur
  • Polymers having phthalocyanine units and their use as optically transparent films
    Patent number: 5120610
    Abstract: Novel polymers contain phthalocyanine ring systems bonded via axial bonds to a central metal atom in the polymer chain and consist of repeating units of the general formula (I) ##STR1## In the general formula (I), Pc.sup.s is a phthalocyanine ring system having peripheral substituents, Me is the central atom of the phthalocyanine ring system, which atom is bonded in the polymer main chain, suitable central metal atoms Me being silicon and germanium, R is alkylene, R' and R" are each alkyl, cycloalkyl, aryl or alkoxy and Z is a silicon-carbon bond or further Si-containing groups. The novel polymers can be particularly advantageously used for the production of ultrathin layers by the LB technique, optically transparent films having high optical anisotropy and a high volume concentration of phthalocyanine radicals being formed.
    Type: Grant
    Filed: March 7, 1990
    Date of Patent: June 9, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerhard Wegner, Walter Caseri, Thomas Sauer