Patents by Inventor Tsi-Zong Tzou

Tsi-Zong Tzou 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: 20240065809
    Abstract: Orthodontic appliances, methods of preparing and seating said orthodontic appliances, and kits including said orthodontic appliances are described.
    Type: Application
    Filed: December 30, 2021
    Publication date: February 29, 2024
    Inventors: Tsi-Zong TZOU, Ming-Lai LAI
  • Patent number: 10307224
    Abstract: Orthodontic appliances and related methods are provided, including a fast-dissolving and humidity-resistant coating, containing a colorant and a binder selected from a polyamide, cellulose derivative, or homopolymer/copolymer of poly(ethylene oxide). The coating can facilitate appliance identification and serve as a reference marking to assist the practitioner in appliance placement. Advantageously, the composition of these coatings allows the color marking to be rinsed off quickly, and yet the color of the coating does not bleed during storage even in high humidity environments. The fast-dissolving nature of these coatings also allows the coating to be deposited in concave and recessed areas of the appliance, such as the archwire slot and vertical slot, since these coatings can be removed prior to archwire installation.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: June 4, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Tsi-Zong Tzou, Matthew T. Scholz
  • Patent number: 9517186
    Abstract: The present application provides a glass composition comprising 10-50% by weight CaO, at least 15% and less than 50% by weight P2O5, less than 3% by weight Al2O3, less than 10% by weight Li2O, Na2O, and K2O combined, and 0-60% by weight of SrO, MgO, BaO, ZnO, or combinations thereof; dental compositions comprising the glass composition, and methods of making and using such dental compositions.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: December 13, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Richard P. Rusin, Kevin M. Cummings, Sumita B. Mitra, Paul A. Burgio, Tsi-Zong Tzou, David S. Arney
  • Publication number: 20150125823
    Abstract: The present application provides a glass composition comprising 10-50% by weight CaO, at least 15% and less than 50% by weight P2O5, less than 3% by weight Al2O3, less than 10% by weight Li2O, Na2O, and K2O combined, and 0-60% by weight of SrO, MgO, BaO, ZnO, or combinations thereof; dental compositions comprising the glass composition, and methods of making and using such dental compositions.
    Type: Application
    Filed: January 12, 2015
    Publication date: May 7, 2015
    Inventors: Richard P. Rusin, Kevin M. Cummings, Sumita B. Mitra, Paul A. Burgio, Tsi-Zong Tzou, David S. Arney
  • Patent number: 8957126
    Abstract: The present application provides dental compositions, and methods of making and using dental compositions that include a calcium and phosphorus releasing glass. Such dental compositions can be useful for delivering ions to the oral environment.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: February 17, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Richard P. Rusin, Kevin M. Cummings, Sumita B. Mitra, Paul A. Burgio, Tsi-Zong Tzou, David S. Arney
  • Publication number: 20140234528
    Abstract: Provided are methods for making adhesive coated orthodontic appliances having a silane treated metallic bonding surface, and related assemblies. Exemplary methods of making an adhesive coated orthodontic appliance include providing a metallic bonding surface on the orthodontic appliance for attachment to a tooth surface, sand blasting the bonding surface with a silica-based media, functionalizing the bonding surface in the presence of a pH-modified coupling agent solution, and applying an adhesive onto at least a portion of the bonding surface, where the adhesive is a hydrophilic adhesive having a water uptake of at least 0.5 percent of its original weight after hardening.
    Type: Application
    Filed: April 23, 2014
    Publication date: August 21, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Bradley D. Craig, Tsi-Zong Tzou, Afshin Falsafi
  • Publication number: 20140212827
    Abstract: Orthodontic appliances and related methods are provided, including a fast-dissolving and humidity-resistant coating, containing a colorant and a binder selected from a polyamide, cellulose derivative, or homopolymer/copolymer of poly(ethylene oxide). The coating can facilitate appliance identification and serve as a reference marking to assist the practitioner in appliance placement. Advantageously, the composition of these coatings allows the color marking to be rinsed off quickly, and yet the color of the coating does not bleed during storage even in high humidity environments. The fast-dissolving nature of these coatings also allows the coating to be deposited in concave and recessed areas of the appliance, such as the archwire slot and vertical slot, since these coatings can be removed prior to archwire installation.
    Type: Application
    Filed: August 14, 2012
    Publication date: July 31, 2014
    Inventors: Tsi-Zong Tzou, Matthew T. Scholz
  • Publication number: 20120070794
    Abstract: Provided are methods for making adhesive coated orthodontic appliances having a silane treated metallic bonding surface, and related assemblies. Exemplary methods of making an adhesive coated orthodontic appliance include providing a metallic bonding surface on the orthodontic appliance for attachment to a tooth surface, sand blasting the bonding surface with a silica-based media, functionalizing the bonding surface in the presence of a pH-modified coupling agent solution, and applying an adhesive onto at least a portion of the bonding surface, where the adhesive is a hydrophilic adhesive having a water uptake of at least 0.5 percent of its original weight after hardening.
    Type: Application
    Filed: September 8, 2011
    Publication date: March 22, 2012
    Inventors: Bradley D. Craig, Tsi-Zong Tzou
  • Publication number: 20100196840
    Abstract: Systems for moving teeth of a patient's dental arch from a first tooth arrangement to a second tooth arrangement include a plurality of resilient appliances such as positioning trays or elongated arch members that are used in sequence. Each appliance of the systems includes a row of spaced apart couplings for connection to respective teeth of the dental arch. The appliances have certain geometric characteristics that match the geometric characteristics of other appliances of the system, and at least one appliance has a stiffness that is greater than the stiffness of at least one other appliance.
    Type: Application
    Filed: April 13, 2010
    Publication date: August 5, 2010
    Inventors: Ming-Lai Lai, Tsi-Zong Tzou
  • Publication number: 20100183996
    Abstract: Containers for photocurable materials are made of a polymer and metallic particles. The containers are particularly useful for storing materials having dyes that are highly sensitive to light. The containers are especially useful for storing dental materials such as orthodontic adhesives, including adhesives in syringes and cartridges as well as adhesives that are precoated onto the base of an orthodontic appliance.
    Type: Application
    Filed: March 30, 2010
    Publication date: July 22, 2010
    Inventors: Tsi-Zong Tzou, Joan V. Brennan
  • Publication number: 20090317772
    Abstract: The present application provides dental compositions, and methods of making and using dental compositions that include a calcium and phosphorus releasing glass. Such dental compositions can be useful for delivering ions to the oral environment.
    Type: Application
    Filed: November 7, 2005
    Publication date: December 24, 2009
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Richard P. Rusin, Kevin M. Cummings, Sumita B. Mitra, Paul A. Burgio, Tsi-Zong Tzou, David S. Arney
  • Publication number: 20070248926
    Abstract: Systems for moving teeth of a patient's dental arch from a first tooth arrangement to a second tooth arrangement include a plurality of resilient appliances such as positioning trays or elongated arch members that are used in sequence. Each appliance of the systems includes a row of spaced apart couplings for connection to respective teeth of the dental arch. The appliances have certain geometric characteristics that match the geometric characteristics of other appliances of the system, and at least one appliance has a stiffness that is greater than the stiffness of at least one other appliance.
    Type: Application
    Filed: June 21, 2007
    Publication date: October 25, 2007
    Inventors: Ming-Lai Lai, Tsi-Zong Tzou
  • Patent number: 7234936
    Abstract: Systems for moving teeth of a patient's dental arch from a first tooth arrangement to a second tooth arrangement include a plurality of resilient appliances such as positioning trays or elongated arch members that are used in sequence. Each appliance of the systems includes a row of spaced apart couplings for connection to respective teeth of the dental arch. The appliances have certain geometric characteristics that match the geometric characteristics of other appliances of the system, and at least one appliance has a stiffness that is greater than the stiffness of at least one other appliance.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: June 26, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Ming-Lai Lai, Tsi-Zong Tzou
  • Publication number: 20060105285
    Abstract: Protective fluoropolymer layers for dental articles, particularly orthodontic appliances, are provided that reduce adhesion of materials such as food, bacteria, and proteinaceous substances to these surfaces, which can cause staining. Methods of reducing adhesion of these materials to such surfaces are also provided.
    Type: Application
    Filed: November 17, 2004
    Publication date: May 18, 2006
    Inventors: Naiyong Jing, Gerald Hofmann, Tsi-Zong Tzou
  • Publication number: 20060105179
    Abstract: Protective fluoropolymer layers for dental articles, particularly orthodontic appliances, that include an elastomeric substrate, are provided that reduce adhesion of materials such as food stains, bacteria and proteinaceous substances to these surfaces, which can cause staining. Methods of reducing adhesion of these materials to such surfaces are also provided.
    Type: Application
    Filed: November 17, 2004
    Publication date: May 18, 2006
    Inventors: Gerald Hofman, Naiyong Jing, Tsi-Zong Tzou, Mark Muggli
  • Publication number: 20060099544
    Abstract: Systems for moving teeth of a patient's dental arch from a first tooth arrangement to a second tooth arrangement include a plurality of resilient appliances such as positioning trays or elongated arch members that are used in sequence. Each appliance of the systems includes a row of spaced apart couplings for connection to respective teeth of the dental arch. The appliances have certain geometric characteristics that match the geometric characteristics of other appliances of the system, and at least one appliance has a stiffness that is greater than the stiffness of at least one other appliance.
    Type: Application
    Filed: November 8, 2004
    Publication date: May 11, 2006
    Inventors: Ming-Lai Lai, Tsi-Zong Tzou
  • Publication number: 20060099545
    Abstract: A series of orthodontic appliances is used in sequence to move the patient's teeth to desired positions. In one aspect, the shape of at least a portion of the patient's dental arch is determined, and a series of appliances is then selected based on the determined shape. In another aspect, the appliances are resilient and used in a sequence such that the stiffness of the current appliance in use increases as the course of treatment progresses.
    Type: Application
    Filed: November 8, 2004
    Publication date: May 11, 2006
    Inventors: Ming-Lai Lai, Tsi-Zong Tzou
  • Patent number: 6988887
    Abstract: An orthodontic separator, dimensioned such that it can be inserted between adjacent teeth. The separator is characterized in that it exhibits an increase in compressive force after insertion between adjacent teeth in the oral environment. The separator, after insertion, exerts sufficient force on the adjacent teeth to push the teeth apart.
    Type: Grant
    Filed: February 18, 2002
    Date of Patent: January 24, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: James D. Hansen, Tsi-Zong Tzou
  • Publication number: 20030196914
    Abstract: Containers for photocurable materials are made of a polymer and metallic particles. The containers are particularly useful for storing materials having dyes that are highly sensitive to light. The containers are especially useful for storing dental materials such as orthodontic adhesives, including adhesives in syringes and cartridges as well as adhesives that are precoated onto the base of an orthodontic appliance.
    Type: Application
    Filed: April 18, 2002
    Publication date: October 23, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Tsi-Zong Tzou, Joan V. Brennan
  • Publication number: 20030157454
    Abstract: An orthodontic separator, said separator dimensioned such that it can be inserted between adjacent teeth, said separator being characterized in that when inserted between adjacent teeth in the oral environment, it exhibits an increase in compressive force, wherein the separator exerts sufficient force on the adjacent teeth to push the teeth apart.
    Type: Application
    Filed: February 18, 2002
    Publication date: August 21, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: James D. Hansen, Tsi-Zong Tzou