Patents by Inventor Oswald Gasser

Oswald Gasser 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: 7175430
    Abstract: The invention relates to deformable, curable or film-forming support materials which contain diagnostically useful additives for locus- and substance-specific intraoral diagnostics, and processes for the preparation of images for intraoral locus- and substance-specific diagnostic purposes, in which diagnostically useful additives are applied to deformable, curable or film-forming support materials containing no diagnostically useful additives, in such a quantity that a diagnostic signal can be observed, the diagnostic result being obtained without a cultivation step.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: February 13, 2007
    Assignee: 3M ESPE AG
    Inventors: Oswald Gasser, Rainer Guggenberger, Bernd Gangnus, Ingo Häberlein
  • Patent number: 7097456
    Abstract: The invention relates to filling systems containing as component i) a sealing system which is capable of bonding to the tooth hard substance, as component ii) a filling material suitable for restorative dentistry, the filling system containing in addition a component iii) in component i) and/or component ii) which reduces the curing of the respective other component by disturbance of the curing mechanism only in the boundary layer between sealant and filling material such that the bonding between components i) and ii) is less than the bonding of component i) to the tooth hard substance.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: August 29, 2006
    Assignee: 3M ESPE AG
    Inventors: Karsten Dede, Oliver Frey, Oswald Gasser, Rainer Guggenberger, Thomas Luchterhandt, Wolfgang Weinmann, Thomas Klettke
  • Patent number: 7083411
    Abstract: Fine-grained powders or powder mixtures can be used to provide for spray cleaning of supragingival tooth surfaces. The abrasion of the tooth surface by the spraying of powder does not exceed 0.15 mm3 in relation to a tooth surface of 10 mm2 during a spray period lasting 2 minutes at a pressure of 4 bars and a distance of no more than 2.5 mm between the tooth surface and nozzle of the spray jet.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: August 1, 2006
    Assignee: 3M Espe AG
    Inventors: Thomas Flemmig, Bernd Gangnus, Oswald Gasser, Rainer Guggenberger, Ingo Haeberlein, Bettina Windmmueller
  • Publication number: 20050147944
    Abstract: The invention features a dental mill blank constructed from an uncured, self-supporting, hardenable organic composition. The invention also provides a method of making a dental appliance. The method involves machining an uncured dental mill blank into an uncured shaped article and then at least partially curing the shaped article. The shaped article may be cured in multiple steps with or without additional machining steps in between the curing steps.
    Type: Application
    Filed: December 31, 2003
    Publication date: July 7, 2005
    Inventors: Naimul Karim, Oswald Gasser
  • Patent number: 6908953
    Abstract: The present invention is directed to polymerizable dental compositions containing (a) 3 to 80 wt. % of cycloaliphatic epoxides; b) 0 to 80 wt. % of an epoxide or a mixture of epoxides which are different from a); c) 3 to 85 wt. % of a filler material; d) 0.01 to 25 wt. % of initiators, inhibitors and/or accelerators; e) 0 to 25 wt. % of auxiliary agents, the individual percentages of which are in relation to the total weight. The new polymerizable agents are particularly suited as dental material.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: June 21, 2005
    Assignee: ESPE Dental AG
    Inventors: Wolfgang Weinmann, Oswald Gasser, Rainer Guggenberger, Gunther Lechner, Wolfgang Soglowek, Joachim Zech
  • Patent number: 6894144
    Abstract: The invention relates to elastomer materials based on N-alkylaziridino compounds with a base component which contains the aziridino compounds and with a catalyst component which contains at least one acid-acting compound, both components being mixed before use, characterized in that, as acid-acting compound of the catalyst component, one or more boric acid complexes are used which can be obtained by reaction of boric acid and/or a boric acid derivative with at least one OH-functional compound, the OH functions being able to be present wholly or partly protected, and this reaction being carried out either as an upstream reaction between boric acid and/or a boric acid derivative and at least one such OH-functional compound or during or after the preparation of the catalyst component or by mixing the catalyst component with the base component which then contains at least one OH-functional compound.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: May 17, 2005
    Assignee: 3M Espe AG
    Inventors: Joachim Zech, Gunther Eckhardt, Cornelia Führer, Bernd Gangnus, Andreas Rombach, Oswald Gasser, Thomas Klettke, Erich Wanek
  • Patent number: 6852822
    Abstract: The invention provides processes for making low viscosity condensates, condensates per se, and processes for making polymers from these condensates. The invention also encompasses the polymer products of these processes, especially articles for dental use. The condensates per se of the invention are of hydrolyzable silanes. The condensates can contain one or more elements selected from the group consisting of B, AI, P, Sn, Pb, the transition metals, the lanthanides and the actinides. Processes of the invention for making polymers from the condensates optionally include use of compounds that can be polymerized ionically or by radical reactions in addition to the hydrolyzable silanes. Curing of the polymers is optionally performed by photochemical, thermal or by redox-induction methods.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: February 8, 2005
    Assignee: 3M ESPE AG
    Inventors: Peter Bissigner, Oswald Gasser, Rainer Guggenberger, Wolfgang Soglowek
  • Publication number: 20040024113
    Abstract: The invention relates to polymerizable compositions comprising
    Type: Application
    Filed: March 18, 2003
    Publication date: February 5, 2004
    Applicant: ESPE Dental AG
    Inventors: Wolfgang Weinmann, Oswald Gasser, Rainer Guggenberger, Gunther Lechner, Wolfgang Soglowek, Joachim Zech
  • Patent number: 6648644
    Abstract: The invention relates to the use of fine powders or powder mixtures for the preparation of an agent for powder-jet cleansing of dental root surfaces, wherein the powders or powder mixtures provide a density of no more than 2.0 g/cm3 and/or a mean particle size of no more than 45 &mgr;m.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: November 18, 2003
    Assignee: ESPE Dental AG
    Inventors: Thomas Flemmig, Bernd Gangnus, Oswald Gasser, Rainer Guggenberger
  • Patent number: 6624236
    Abstract: The invention relates to polysiloxanes from cross-linkable monomers based on cyclosiloxanes and their use in polymerizable compositions. The invention relates in particular to polysiloxanes from sol-gel-condensable cyclosiloxane(meth)acrylates as well as resinous compositions, obtainable by hydrolytic condensation of one or more hydrolyzable and condensable cyclosiloxane(meth)acrylates.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: September 23, 2003
    Assignee: 3M Espe AG
    Inventors: Peter Bissinger, Oswald Gasser, Rainer Guggenberger, Wolfgang Soglowek, Gunther Eckhardt
  • Patent number: 6566413
    Abstract: The invention relates to novel cyclic siloxane compounds of the following general formula (I): in which: n=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 preferably 1, 2, 3, 4, 5; A=H or C1-C15 alk(en)yl, C3-C15 cycloalk(en)yl, C6-C12 aryl, C8-C18 alkaryl, where, in the said radicals, in each case one or more C atoms can be replaced by O, C═O, O(C═O), SiR2 and/or NR, R being an aliphatic radical with 1 to 7 C atoms, in which one or more C atoms can be replaced by O, C═O, and/or O(C═O); B=E or a linear, branched or polycyclic aliphatic- or aromatic-groups-containing hydrocarbon radical which links 2 to 10 of the cyclosiloxane radicals defined above, less B, to one another and contains 2 to 50 C atoms and additionally 0 to 30 other atoms from the group O, N, S, P, Si, Cl, F, Br, I and from which correspondingly 1 to 9, preferably 1 to 4 of the above defined cyclosiloxane radicals, less B, are pending; E=A or a polymerizable group G—Q—L, where o
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: May 20, 2003
    Assignee: 3M ESPE AG
    Inventors: Wolfgang Weinmann, Joachim Zech, Oswald Gasser, Rainer Guggenberger, Gunther Eckhardt, Peter Bissinger, Wolfgang Soglowek
  • Publication number: 20020002212
    Abstract: The invention relates to polymerizable compositions comprising
    Type: Application
    Filed: January 16, 2001
    Publication date: January 3, 2002
    Applicant: Espe Dental AG
    Inventors: Wolfgang Weinmann, Oswald Gasser, Rainer Guggenberger, Gunther Lechner, Wolfgang Soglowek, Joachim Zech
  • Patent number: 6245828
    Abstract: The present invention is directed to polymerizable dental compositions containing a) 3 to 80 wt. % of cycloaliphatic epoxides; b) 0 to 80 wt. % of an epoxide or a mixture of epoxides which are different from a); c) 3 to 85 wt. % of a filer material; d) 0.01 to 25 wt. % of initiators, inhibitors and/or accelerators; e) 0 to 25 wt. % of auxiliary agents, the individual percentages of which are in relation to the total weight. The new polymerizable agents are particularly suited as dental material.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: June 12, 2001
    Assignee: ESPE Dental AG
    Inventors: Wolfgang Weinmann, Oswald Gasser, Rainer Guggenberger, Gunther Lechner, Wolfgang Soglowek, Joachim Zech
  • Patent number: 5569691
    Abstract: The invention relates to a rubber-elastic composition which comprises a polyether material, and which in the completely vulcanized and completely polymerized form, contain 0.1 to 15 wt. %, relative to the total weight of the composition, of at least one hydrophilic nature imparting agent selecting from the group consisting of a hydrophilic silicone oil having one or more siloxane groups as a hydrophobic part and one or more ether groups as a hydrophilic part, a fluorinated hydro-carbon, a block copolymer of ethylene oxide/propylene oxide, a fatty alcohol derivative, an alkyl phenol derivative, a fatty amine, an amine oxide, a fatty acid glycol and glycerin derivative, a fatty acid, and a fatty acid monoester. The composition is suitable as dental impression composition and has, in the completely polymerized state, even with multiple disinfections in an aqueous disinfecting solution, a continuing good ability to flow on (small wetting angle) and an unchanged dimensional stability.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: October 29, 1996
    Assignee: Thera Patent GmbH & Co. KG Gesellschaft fur Industrielle Schutzrechte
    Inventors: Rainer Guggenberger, Erich Wanek, Oswald Gasser
  • Patent number: 5548002
    Abstract: It has been found that silicone resins which contain alkoxy functional groups and harden rapidly in the presence of moisture allow suitable one-component formulations as provisional fixing materials. The hardening rate can be adjusted by addition of suitable activators.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: August 20, 1996
    Assignee: Heraeus Kulzer GmbH & Co. KG
    Inventors: Peter Schwabe, Ottfried Schlak, Jens Winkel, Rainer Guggenberger, Oswald Gasser
  • Patent number: 5520922
    Abstract: There are provided formable compositions which comprise:(A) 25 to 80% by weight of a glass ionomer cement, containing (a) an aluminum fluorosilicate glass, (b) at least one polymeric polyacid with an average molecular weight >500, (c) water and (d) optionally a chelating agent;(B) and 20 to 75% by weight of a fluoride and/or oxide and/or mixed fluoride and/or mixed oxide of heavy metal elements which are essentially insoluble at ambient temperatures in an aqueous solution containing the polymeric polyacid and/or an aqueous solution containing the chelating agent.The compositions are especially well suited as filling materials for dental root canals.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: May 28, 1996
    Assignee: THERA Patent GmbH & Co. KG, Gesellschaft fur industrielle Schutzrechte
    Inventors: Oswald Gasser, Rainer Guggenberger
  • Patent number: 5425771
    Abstract: Bone replacement parts consisting of glass ionomer cement are superior to those made of ceramics especially since they may easily be produced and machined using common grinding and milling tools. The required prosthesis part may therefore be formed of freshly mixed glass ionomer cement during the respective operation, or an industrially prefabricated formed body approximating the idealized shape of the bone part to be replaced may be adapted to the anatomic conditions given.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: June 20, 1995
    Assignee: Thera Patent GmbH & Co. KG Gesellschaft fur industrielle Schutzrechte
    Inventors: Jan Helms, Gotz Geyer, Erich Wanek, Werner Zollner, Oswald Gasser
  • Patent number: 5314474
    Abstract: Bone replacement parts consisting of glass ionomer cement are superior to those made of ceramics especially since they may easily be produced and machined using common grinding and milling tools. The required prosthesis part may therefore be formed of freshly mixed glass ionomer cement during the respective operation, or an industrially prefabricated formed body approximating the idealized shape of the bone part to be replaced may be adapted to the anatomic conditions given.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: May 24, 1994
    Assignee: THERA Patent GmbH & Co. KG, Gesellschaft fur industrielle Schutzrechte
    Inventors: Jan Helms, Gotz Geyer, Erich Wanek, Werner Zollner, Oswald Gasser
  • Patent number: 5250585
    Abstract: A dental material in powder form and being based on(a) aluminum fluorosilicate glass,(b) base metals suitable for dental use, or alloys of these with each other, and optionally(c) dry polycarboxylic acid and/or(d) a chelating agent,which contains at least some of constituent (a) as a sintered mixture with constituent (b).
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: October 5, 1993
    Assignee: ESPE Stiftung & Co. Produktions- und Vertriebs KG
    Inventors: Rainer Guggenberger, Klaus Ellrich, Oswald Gasser, John W. McLean, Owen Makinson
  • Patent number: 5244933
    Abstract: Curable compositions are described which contain a binder and a high propion of fillers having a mean grain size of <50 .mu.m. The filler proportion of the curable compositions is so high that they cannot be used for the intended purpose because of their high viscosity However, they can be liquefied by exposure to oscillation in the frequency range of 20 Hz to 20 MHz with an amplitude of 1 .mu.m to 5 mm so that they are workable and can be employed for the intended purpose.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: September 14, 1993
    Assignee: Thera Patent GmbH & Co. KG Gesellschaft fur industrielle Schutzrechte
    Inventors: Stefan Eidenbenz, Klaus Ellrich, Oswald Gasser, Rainer Guggenberger, Andreas Iburg, Peter Koran, Michael J. Noack, Reinhold Nowak, Francois Roulet, Klaus-Peter Stefan, Werner Zollner