Patents by Inventor Uwe Walz

Uwe Walz 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).

  • Patent number: 8026295
    Abstract: Dental composition having an improved light and thermal stability, including a mixture of at least a polymerizable resin, at least a polymerizable monomer, at least a polymerization initiator and/or a sensitizer and stabilizer, and at least an organic and/or inorganic filler and pigments in a content of 0 to 90 percent and at least one of the stable radicals.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: September 27, 2011
    Assignee: Dentsply International, Inc.
    Inventors: Uwe Walz, Joachim E. Klee
  • Publication number: 20100160485
    Abstract: An aqueous one-pack self-etching and self-priming dental adhesive composition having a pH of at most 2, which comprises: (i) a polymerizable N-substituted alkylacrylic or acrylic acid amide monomer which optionally contains an inorganic acidic moiety selected from a phosphonic acid moiety or a sulfonic acid moiety, and (ii) a curing system.
    Type: Application
    Filed: August 27, 2009
    Publication date: June 24, 2010
    Inventors: Joachim Klee, Uwe Walz, Uwe Lehman
  • Publication number: 20100022681
    Abstract: The invention concerns a dental composition comprising bisacrylamides that are polymerizable by free-radical polymerization and by Michael-addition polymerization with amines. The application of polymerization and addition polymerization with amines opens the possibility to completely reacted materials that have no oxygen inhibited layers. The claimed bisacrylamides have an improved hydrolytic stability.
    Type: Application
    Filed: September 28, 2009
    Publication date: January 28, 2010
    Inventors: Uwe Walz, Joachim E. Klee
  • Publication number: 20080237907
    Abstract: A process for the preparation of a polymerizable dental composition comprising the steps of (a) preparing a liquid mixture comprising (i) 1 to 99% w/w of a hybrid monomer component containing at least one hybrid monomer compound having one hydrolysable siloxane group and at least one polymerizable organic moiety, and (ii) 99 to 1% w/w of a monomer component polymerizable with the polymerizable organic moiety of the hybrid monomer compounds; and (b) adding at least a stoichiometrically sufficient amount of water to the mixture to hydrolyse the hydrolysable siloxane group of the hybrid monomer compound and to form spherical polymerizable nanoparticles having an average particle size of from 1 to 100 nm dispersed in the monomer component, whereby the nanoparticles have a structure with Si—O—Si bonds and peripherally exposed polymerizable organic moieties.
    Type: Application
    Filed: June 4, 2008
    Publication date: October 2, 2008
    Inventors: Joachim E. Klee, Uwe Walz, Andreas Facher, Christoph Weber, Rolf Mulhaupt, Holger Frey, Ekkehard Muh
  • Publication number: 20080194730
    Abstract: An aqueous one-pack self-etching and self-priming dental adhesive composition having a pH of at most 2, which comprises: (i) a polymerizable N-substituted alkylacrylic or acrylic acid amide monomer which optionally contains an inorganic acidic moiety selected from a phosphonic acid moiety or a sulfonic acid moiety, and (ii) a curing system.
    Type: Application
    Filed: March 20, 2008
    Publication date: August 14, 2008
    Inventors: Joachim Klee, Uwe Walz, Uwe Lehmann
  • Publication number: 20080103229
    Abstract: Dental composition having an improved light and thermal stability, including a mixture of at least a polymerizable resin, at least a polymerizable monomer, at least a polymerization initiator and/or a sensitizer and stabilizer, and at least an organic and/or inorganic filler and pigments in a content of 0 to 90 percent and at least one of the stable radicals.
    Type: Application
    Filed: December 18, 2007
    Publication date: May 1, 2008
    Inventors: Uwe Walz, Joachim Klee
  • Publication number: 20070293642
    Abstract: One-part self-etching, self-priming dental adhesive composition having a pH of at most 2, which comprises (a) a polymerizable acidic phosphoric acid ester monomer (b) one or more polymerizable acidic monomers (c) a polymerizable N-substituted alkylacrylic or acrylic acid amide monomer; (d) optionally an organic and/or inorganic acid; (e) an organic water soluble solvent and/or water; and (f) polymerization initiator, inhibitor and stabilizer.
    Type: Application
    Filed: December 15, 2004
    Publication date: December 20, 2007
    Applicant: Dentsply De Trey GmbH
    Inventors: Joachim Klee, Uwe Lehmann, Uwe Walz
  • Publication number: 20070129458
    Abstract: The invention concerns a dental composition comprising bisacrylamides that are polymerizable by free-radical polymerization and by Michael-addition polymerization with amines. The application of polymerization and addition polymerization with amines opens the possibility to completely reacted materials that have no oxygen inhibited layers. The claimed bisacrylamides have an improved hydrolytic stability.
    Type: Application
    Filed: January 29, 2007
    Publication date: June 7, 2007
    Inventors: Uwe Walz, Joachim Klee
  • Publication number: 20060246017
    Abstract: The present invention provides a polymerizable phosphoric acid ester derivative having the following formula (A): wherein Z is COOR1, COSR1, CON(R1)2, CONR1 R2, or CONHR1, R1 and R2 independently are a hydrogen atom, a substituted or unsubstituted C1 to C18 alkyl group optionally substituted by a C3 to C8 cycloalkyl group, a substituted or unsubstituted C3 to C8 cycloalkyl group, a substituted or unsubstituted C4 to C,18 aryl or heteroaryl group, a substituted or unsubstituted C5 to C18 alkylaryl or alkylheteroaryl group, or a substituted or unsubstituted C7 to C30 aralkyl group, whereby two R1 residues may form together with the N-atom to which they are bonded a 5- to 7-membered heterocyclic ring which may contain beside said N-atom a further nitrogen atom or an oxygen atom, and whereby the substituted groups may be substituted by 1 to 5 C1 to C5 alkyl group(s); a is an integer of from 1 to 10, preferably 1 to 5; b is an integer of from 1 to 10, preferably 1 to 5; and R represents an organic residue containi
    Type: Application
    Filed: March 5, 2004
    Publication date: November 2, 2006
    Applicant: Dentsply De Trey Gmbh
    Inventors: Joachim Klee, Uwe Walz, Uwe Lehmann, Huaibing Liu
  • Patent number: 7041709
    Abstract: A composition including nanoparticles each having an acidic polymerizable siloxane moiety. For example, a hydrolysis stable, self-etching, self-priming dental adhesive composition including 90 to 10 percent by weight of an aqueous phase, and 10 to 90 percent by weight of acidic polymerizable nanoparticles. The acidic polymerizable nanoparticles are obtainable by hydrolysis of a mixture containing one or more hydrolyzable organosilicon compounds wherein (i) at least a portion of the hydrolyzable organosilicon compounds contains one or more polymerizable groups and (ii) at least a portion of the hydrolyzable organosilicon compounds contain one or more acidic moieties.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: May 9, 2006
    Assignee: Dentsply DeTrey GmbH
    Inventors: Joachim E. Klee, Uwe Lehmann, Uwe Walz
  • Patent number: 6998111
    Abstract: A composition is adapted to be stored for at least 24 hours at between 0° C. to 40° C. and between 0 percent and 100 percent humidity. The composition includes from 0.2 to 5 percent by weight of a peroxide, from 0.2 to 3 percent by weight of a metal containing material, from 0.1 to 3 percent by weight of a protected reducing agent. The protected reducing agent is adapted to form an active reducing agent. Optionally the composition includes from 0 to 1 percent by weight of an amine.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: February 14, 2006
    Assignee: Dentaply DeTrey GmbH
    Inventors: Joachim E. Klee, Uwe Walz
  • Publication number: 20050054748
    Abstract: A dental composition including a mono- and/or a poly-cyanoacrylate, a polymerizable monomer, a stabilizer, an initiator, and optionally, pigments and a filling material.
    Type: Application
    Filed: September 17, 2004
    Publication date: March 10, 2005
    Inventors: Joachim Klee, Uwe Walz, Rolf Mulhaupt
  • Publication number: 20050043490
    Abstract: An esterified macromonomer within the scope of the general formula: wherein Z is an organic moiety, R1 is hydrogen or a substituted or unsubstituted alkyl having from 1 to 12 carbon atoms, oxyalkyl having from 1 to 12 carbon atoms, alkenyl having from 2 to 12 carbon atoms, cycloalkyl having from 5 to 12 carbon atoms, aryl having from 6 to 12 carbon atoms or aralkyl having from 7 to 12 carbon atoms, each E independently is a hydroxyl group, an organic ester moiety or an inorganic ester containing moiety and at least one E is an ester containing moiety, n and m each independently is an integer from 2 to 12. The esterified macromonomer is obtainable by esterification of at least a portion of the —OH groups of a macromonomer having at least one terminal double bond with at least one derivative of an inorganic or organic acid which introduces pendant groups exhibiting at least one acid moiety selected from the group of consisting of —COOH, —PO3H2, —SO3H, —BO2H or salts thereof.
    Type: Application
    Filed: September 10, 2004
    Publication date: February 24, 2005
    Inventors: Joachim Klee, Uwe Walz
  • Publication number: 20040266906
    Abstract: An aqueous one-pack self-etching and self-priming dental adhesive composition having a pH of at most 2, which comprises: (i) a polymerizable N-substituted alkylacrylic or acrylic acid amide monomer which optionally contains an inorganic acidic moiety selected from a phosphonic acid moiety or a sulfonic acid moiety, and (ii) a curing system.
    Type: Application
    Filed: April 26, 2004
    Publication date: December 30, 2004
    Inventors: Joachim Klee, Uwe Walz, Uwe Lehman
  • Publication number: 20040229972
    Abstract: The invention describes a low shrinking polymerizable dental material, comprising a mixture of a polymerizable resin, a polymerizable monomer, a polymerization initiator and/or sensibilizer and a filler in a content of about 20 to about 85 percent. The volumetric shrinkage during polymerization is less than about 1.5 Vol.- % due to its rheopex behavior.
    Type: Application
    Filed: June 15, 2004
    Publication date: November 18, 2004
    Inventors: Joachim E. Klee, Uwe Walz, Dirk Holter, Armin Burgath, Holger Erey, Rolf Mulhaupt
  • Publication number: 20040225029
    Abstract: Dental composition having an improved light and thermal stability, including a mixture of at least a polymerizable resin, at least a polymerizable monomer, at least a polymerization initiator and/or a sensitizer and stabilizer, and at least an organic and/or inorganic filler and pigments in a content of 0 to 90 percent and at least one of the stable radicals.
    Type: Application
    Filed: June 8, 2004
    Publication date: November 11, 2004
    Inventors: Uwe Walz, Joachim E. Klee
  • Publication number: 20040220291
    Abstract: Dental compositions comprising at least a polymerizable monomer and/or at least a polyaminoester that are prepared by reaction of bis- or polyacrylic esters and amines, pigments, organic and/or inorganic fillers, initiators and stabilizers.
    Type: Application
    Filed: March 4, 2004
    Publication date: November 4, 2004
    Inventors: Uwe Walz, Joachim E. Klee
  • Patent number: 6812266
    Abstract: A dental adhesive composition for bonding dental restoratives to dentin and enamel provides a one-part self-etching, self-priming dental adhesive composition having hydrolysis stable polymerizable acidic adhesive monomers.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: November 2, 2004
    Assignee: Dentsply DeTrey GmbH
    Inventors: Joachim E. Klee, Uwe Walz
  • Publication number: 20040209990
    Abstract: A low shrinking polymerizable dental material, includes a mixture of a polymerizable di- or poly(meth)acrylate, an alkoxylated bisphenol dimethacrylate, a polymerizable monomer, a polymerization initiator and/or sensitizer, a stabilizer and a filler in a content of 70 to 85 percent. The volumetric shrinkage during polymerization is less than 2.0 vol.-%.
    Type: Application
    Filed: January 12, 2004
    Publication date: October 21, 2004
    Inventors: Uwe Walz, Joachim E. Klee
  • Publication number: 20040171716
    Abstract: The invention concerns a dental composition comprising bisacrylamides that are polymerizable by free-radical polymerization and by Michael-addition polymerization with amines. The application of polymerization and addition polymerization with amines opens the possibility to completely reacted materials that have no oxygen inhibited layers. The claimed bisacrylamides have an improved hydrolytic stability.
    Type: Application
    Filed: March 4, 2004
    Publication date: September 2, 2004
    Inventors: Uwe Walz, Joachim E. Klee