Patents by Inventor Lani S. Kangas
Lani S. Kangas 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).
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Patent number: 7649029Abstract: The present invention features ionomer compositions containing nanozirconia fillers. The compositions can be used in a variety of dental and orthodontic applications, for example, as adhesives, cements, restoratives, coatings and sealants.Type: GrantFiled: May 17, 2004Date of Patent: January 19, 2010Assignee: 3M Innovative Properties CompanyInventors: Brant U. Kolb, Hoa T. Bui, Jason P. Thalacker, Lani S. Kangas, Joel D. Oxman, Kenton D. Budd, Jacqueline C. Rolf, Sumita B. Mitra
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Patent number: 7361216Abstract: The present invention features ionomer compositions containing nanofillers. The compositions can be used in a variety of dental and orthodontic applications, for example, as adhesives, cements, restoratives, coatings and sealants.Type: GrantFiled: October 27, 2006Date of Patent: April 22, 2008Assignee: 3M Innovative Properties CompanyInventors: Lani S. Kangas, Hoa T. Bui, Jason P. Thalacker, Brant U. Kolb, Joel D. Oxman, Jacqueline C. Rolf
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Patent number: 7156911Abstract: The present invention features ionomer compositions containing nanofillers. The compositions can be used in a variety of dental and orthodontic applications, for example, as adhesives, cements, restoratives, coatings and sealants.Type: GrantFiled: May 17, 2004Date of Patent: January 2, 2007Assignee: 3M Innovative Properties CompanyInventors: Lani S. Kangas, Hoa T. Bui, Jason P. Thalacker, Brant U. Kolb, Joel D. Oxman, Jacqueline C. Rolf
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Patent number: 7090722Abstract: Acid-reactive dental fillers, and methods of making and using such fillers, are disclosed. The acid-reactive dental fillers include a trivalent metal, oxygen, fluorine, an alkaline earth metal, and, optionally, silicon. The acid-reactive dental fillers are preferably nanostructured, for example, in the form of nanoparticles.Type: GrantFiled: May 17, 2004Date of Patent: August 15, 2006Assignee: 3M Innovative Properties CompanyInventors: Kenton D. Budd, Jason P. Thalacker, Sumita B. Mitra, Brant U. Kolb, Lani S. Kangas
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Patent number: 6664359Abstract: A tackified composition comprising (a) a polydiorgannosiloxane polyurea segmented copolymer comprising the reaction product of (i) at least one polyaminie, wherein the polyamine comprises at least one polydiorganosiloxane diamine, or a mixture of at least one polydiorganosiloxane diamine and at least one organic polyamine, and (ii) at least one polyisocyanate, wherein the mol ratio of isocyanate to amined is between 0.9:1 and 0.95:1 or between 1.05:1 and about 1.3:1, and (b) silicate resins. The tackified compositions are useful as pressure sensitive adhesives, particularly for foamed backing tapes, medical tapes and the like, hot melt adhesives, vibration dampers, anti-corrosive materials.Type: GrantFiled: October 2, 1997Date of Patent: December 16, 2003Assignee: 3M Innovative Properties CompanyInventors: Lani S. Kangas, Mieczyslaw H. Mazurek, Kurt C. Melancon, Walter R. Romanko, Audrey A. Sherman
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Patent number: 6521732Abstract: A (meth)acrylate terpolymer comprising 1-30% of total terpolymer weight epoxy-functional (meth)acrylate monomer units, 1-98% of total terpolymer weight tackifier (meth)acrylate monomer units, and 1-98% of total terpolymer weight compatibilizing (meth)acrylate monomer units, wherein the compatibilizing (meth)acrylate monomer unit is a (meth)acrylic ester derived from an aromatic alcohol containing 6-14 carbon atoms. Also provided are self-fixturing adhesive compositions comprising the acrylate terpolymer of the present invention and methods of their use.Type: GrantFiled: April 5, 2001Date of Patent: February 18, 2003Assignee: 3M Innovative Properties CompanyInventors: Mario Alberto Perez, Ahmed Salih Abuelyaman, Ikuko Ebihara, Lani S. Kangas
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Publication number: 20010031837Abstract: A (meth)acrylate terpolymer is provided comprising 1-30% of total terpolymer weight epoxy-functional (meth)acrylate monomer units, 1-98% of total terpolymer weight tackifier (meth)acrylate monomer units, and 1-98% of total terpolymer weight compatibilizing (meth)acrylate monomer units, wherein said compatibilizing (meth)acrylate monomer unit is a (meth)acrylic ester derived from an aromatic alcohol containing 6-14 carbon atoms. Also provided are self-fixturing adhesive compositions comprising the acrylate terpolymer of the present invention and methods of their use.Type: ApplicationFiled: April 5, 2001Publication date: October 18, 2001Applicant: 3M Innovative Properties CompanyInventors: Mario Alberto Perez, Ahmed Salih Abuelyaman, Ikuko Ebihara, Lani S. Kangas
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Patent number: 6235850Abstract: A (meth)acrylate terpolymer is provided comprising 1-30% of total terpolymer weight epoxy-functional (meth)acrylate monomer units, 1-98% of total terpolymer weight tackifier (meth)acrylate monomer units, and 1-98% of total terpolymer weight compatibilizing (meth)acrylate monomer units, wherein said compatibilizing (meth)acrylate monomer unit is a (meth)acrylic ester derived from an aromatic alcohol containing 6-14 carbon atoms. Also provided are self-fixturing adhesive compositions comprising the acrylate terpolymer of the present invention and methods of their use.Type: GrantFiled: December 11, 1998Date of Patent: May 22, 2001Assignee: 3M Immovative Properties CompanyInventors: Mario Alberto Perez, Ahmed Salih Abuelyaman, Ikuko Ebihara, Lani S. Kangas
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Patent number: 5635545Abstract: Thermoplastic molding compositions are made from a mixture of thermoplastic material (for example, polycaprolactone), a free-radically polymerizable resin (for example, a urethane diacrylate oligomer), and free-radical initiator (for example, a visible-light cure photoinitiator). The mixture is solid at 38.degree. C., has a melting or softening point that comfortably can be withstood by oral tissues, and can be imprinted with a heat-stable custom shape memory and semi-thermoplastic properties by shaping the composition to a desired shape and then causing or permitting the resin to undergo polymerization.Type: GrantFiled: February 13, 1995Date of Patent: June 3, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Joel D. Oxman, Lani S. Kangas, F. Andrew Ubel, III
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Patent number: 5591786Abstract: Thermoplastic molding compositions are made from a mixture of thermoplastic material (for example, polycaprolactone), a free-radically polymerizable resin (for example, a urethane diacrylate oligomer), and free-radical initiator (for example, a visible-light cure photoinitiator). The mixture is solid at 38.degree. C., has a melting or softening point that comfortably can be withstood by oral tissues, and can be imprinted with a heat-stable custom shape memory and semi-thermoplastic properties by shaping the composition to a desired shape and then causing or permitting the resin to undergo polymerization.Type: GrantFiled: May 19, 1995Date of Patent: January 7, 1997Assignee: Minnesota Mining And Manufacturing CompanyInventors: Joel D. Oxman, F. Andrew Ubel, III, Lani S. Kangas
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Patent number: 5574114Abstract: A blend of isocyanate-terminated polyurethane prepolymers is provided. The blend consists essentially of a first crystalline prepolymer based upon polyhexamethylene adipate and a second prepolymer based upon polytetramethylene ether glycol.Type: GrantFiled: June 2, 1995Date of Patent: November 12, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Charles W. Stobbie, IV, John C. Tangen, Lani S. Kangas
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Patent number: 5559196Abstract: A blend of isocyanate-terminated polyurethane prepolymers is provided. The blend consists essentially of a first crystalline prepolymer based upon polyhexamethylene adipate and a second prepolymer based upon polytetramethylene ether glycol.Type: GrantFiled: June 2, 1995Date of Patent: September 24, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Charles W. Stobbie, IV, John C. Tangen, Lani S. Kangas
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Patent number: 5558941Abstract: A blend of isocyanate-terminated polyurethane prepolymers is provided. The blend consists essentially of a first crystalline prepolymer based upon polyhexamethylene adipate and a second prepolymer based upon polytetramethylene ether glycol.Type: GrantFiled: June 2, 1995Date of Patent: September 24, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Charles W. Stobbie, IV, John C. Tangen, Lani S. Kangas
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Patent number: 5536805Abstract: A blend of isocyanate-terminated polyurethane prepolymers comprising: (a) a first prepolymer which comprises the reaction product of an at least essentially semicrystalline hydroxy-functional material and a polyisocyanate; (b) a second prepolymer which comprises the reaction product of a poly(tetramethylene glycol) ether and a polyisocyanate; and (c) a third prepolymer which comprises the reaction product of an essentially amorphous hydroxy-functional material and a polyisocyanate. The blend may also include a fourth prepolymer which comprises the reaction product of a slightly branched hydroxy-functional material and a polyisocyanate.Type: GrantFiled: April 7, 1995Date of Patent: July 16, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventor: Lani S. Kangas
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Patent number: 5436302Abstract: A blend of isocyanate-terminated polyurethane prepolymers is provided. The blend consists essentially of a first crystalline prepolymer based upon polyhexamethylene adipate and a second prepolymer based upon polytetramethylene ether glycol.Type: GrantFiled: June 10, 1994Date of Patent: July 25, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Charles W. Stobbie, IV, John C. Tangen, Lani S. Kangas
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Patent number: 5418310Abstract: A blend of isocyanate-terminated polyurethane prepolymers comprising: (a) a first prepolymer which comprises the reaction product of an at least essentially semicrystalline hydroxy-functional material and a polyisocyanate; (b) a second prepolymer which comprises the reaction product of a poly(tetramethylene glycol)ether and a polyisocyanate; and (c) a third prepolymer which comprises the reaction product of an essentially amorphous hydroxy-functional material and a polyisocyanate. The blend may also include a fourth prepolymer which comprises the reaction product of a slightly branched hydroxy-functional material and a polyisocyanate.Type: GrantFiled: February 24, 1994Date of Patent: May 23, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventor: Lani S. Kangas
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Patent number: 5415544Abstract: A preloaded impression tray (5a), comprising a thermoplastic impression material (7) at least partially enveloped by a shell (1a), the thermoplastic impression material being a plasticized solid and having:(i) a softening point that comfortably can be withstood by oral tissues,(ii) sufficient depth in the shell and fluidity when softened to conform accurately to adult dentition and the gingival margin, and(iii) sufficient strength and flexibility when resolidified in the mouth to permit removal of the impression material from teeth without tearing or undesirable distortion.Type: GrantFiled: August 6, 1992Date of Patent: May 16, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Joel D. Oxman, F. Andrew Ubel, III, Lani S. Kangas, Todd R. Williams
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Patent number: 5403188Abstract: Dental crowns and bridges are made from thermoplastic molding compositions which are a mixture of thermoplastic material (for example, polycaprolactone), a free-radically polymerizable resin (for example, a urethane diacrylate oligomer), and free-radical initiator (for example, a visible-light cure photoinitiator). The mixture is solid at 38.degree. C., has a melting or softening point that comfortably can be withstood by oral tissues, and can be imprinted with a heat-stable custom shape memory and semi-thermoplastic properties by shaping the composition to a desired shape and then causing or permitting the resin to undergo polymerization.Type: GrantFiled: October 15, 1993Date of Patent: April 4, 1995Inventors: Joel D. Oxman, Lani S. Kangas, F. Andrew Ubel, III
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Patent number: 5137984Abstract: A mixture of hydroxy functional polymers which can be used to form isocyanate prepolymers which are non-hairing at application temperature are disclosed. Examples of suitable mixtures of hydroxy functional polymers that can be used to form the prepolymers are:(1) linear polyester blends, comprising a first and second polyester wherein each polyester is the reaction product of a polyol and a polyacid, whereina+b<or=4, c+d>or=6a+b>4 or .ltoreq.6, c+d>or=10a+b>6 or .ltoreq.Type: GrantFiled: May 15, 1990Date of Patent: August 11, 1992Assignee: Minnesota Mining and Manufacturing Co.Inventors: Lani S. Kangas, Charles W. Stobbie, IV