Patents by Inventor Ursula Sell

Ursula Sell 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).

  • Recording material for water-dilutable inks
    Patent number: 6136448
    Abstract: A recording material, more particularly for ink-jet printers, comprises an inking layer formulated to locally receive a water-soluble pigment solution and containing an epoxy cross-linkable, carboxyl-grouped cationic mixed polymer, an epoxidized metal oxide and a water-soluble polymer.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: October 24, 2000
    Assignees: FEW Forschungs- und Entwicklungsgesellschaft Wolfen mbH, EMTEC Magnetics GmbH
    Inventors: Christoph Roth, Angela Kuhrt, Ursula Sell
  • Ultraviolet dosimeter film
    Patent number: 6015621
    Abstract: An ultraviolet-sensitive dosimeter material comprises at least one diazonium compound featuring absorption in the ultraviolet wavelength range, and a binder. The diazonium compound is preferably formed by a diazonium salt of the general formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and X.sup.- are selected from the following groups:R.sub.1 : H, halogen, alkyl with C.sub.1 -C.sub.5, alkoxy with C.sub.1 -C.sub.5, aryloxy,R.sub.2 : H, halogen, alkyl with C.sub.1 -C.sub.5, alkoxy with C.sub.1 -C.sub.5, aryloxy,NR'R" (R', R" same or differing alkyl compounds or heterocyclic armines, or COOR.sub.4 (R.sub.4 alkyl with C.sub.1 -C.sub.5), andR.sub.3 : H, alkoxy with C.sub.1 -C.sub.5, andX.sup.- : diazo process anions, or perfluorinated aliphatic or aromatic anions.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: January 18, 2000
    Assignee: Syntec Gesellschaft fur Chemie und Technologie der Informationsaufzeichnu ng mbH
    Inventors: Regina Lischewski, Ursula Sell, Jorg Marx, Uwe Gohs