Patents by Inventor Afshin Falsafi
Afshin Falsafi 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: 9320685Abstract: Dental compositions are described comprising an addition-fragmentation agent of the formula: wherein R1, R2 and R3 are each independently Zm-Q-, a (hetero)alkyl group or a (hetero)aryl group with the proviso that at least one of R1, R2 and R3 is Zm-Q-; Q is a linking group have a valence of m+1; Z is an ethylenically unsaturated polymerizable group; m is 1 to 6; each X1 is independently —O— or —NR4—, where R4 is H or C1-C4 alkyl; and n is 0 or 1. Also described are dental articles prepared from a dental composition comprising an addition-fragmentation agent and methods of treating a tooth surface.Type: GrantFiled: May 8, 2015Date of Patent: April 26, 2016Assignee: 3M Innovative Properties CompanyInventors: William H. Moser, Guy D. Joly, Larry R. Krepski, Babu N. Gaddam, Ahmed S. Abuelyaman, Bradley D. Craig, Timothy D. Dunbar, Chuntao Cao, Joel D. Oxman, Afshin Falsafi, Hoa T. Bui
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Publication number: 20160008234Abstract: A curable dental composition comprising an addition-fragmentation agent and a curable dental resin is disclosed.Type: ApplicationFiled: August 14, 2012Publication date: January 14, 2016Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Guy D. Joly, Ahmed S. Abuelyaman, Bradley D. Craig, Afshin Falsafi, Joel D. Oxman, Larry R. Krepski, William H. Moser, Serkan Yurt
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Publication number: 20150328086Abstract: Addition-fragmentation oligomers of the general formula Z—By-A-(B-A)x-B-A-By—Z, where the A monomers units are derived from a diester or diacid, the B monomer units are derived from a difunctional monomer having functional groups co-reactive and at least one of the A or B monomers comprise a 1-methylene-3,3-dimethylpropyl group.Type: ApplicationFiled: November 27, 2013Publication date: November 19, 2015Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Ann R. Fornof, William H. Moser, Larry R. Krepski, Guy D. Joly, Ahmed S. Abuelyaman, Afshin Falsafi, Babu N. Gaddam
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Publication number: 20150283039Abstract: A curable dental composition comprising an addition-fragmentation agent and a curable dental resin is disclosed.Type: ApplicationFiled: October 31, 2013Publication date: October 8, 2015Inventors: Guy D. Joly, Ahmed S. Abuelyaman, Ann R. Fornof, Bradley D. Craig, Larry R. Krepski, William H. Moser, Serkan Yurt, Joel D. Oxman, Afshin Falsafi
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Publication number: 20150238389Abstract: Dental compositions are described comprising an addition-fragmentation agent of the formula: wherein R1, R2 and R3 are each independently Zm-Q-, a (hetero)alkyl group or a (hetero)aryl group with the proviso that at least one of R1, R2 and R3 is Zm-Q-; Q is a linking group have a valence of m+1; Z is an ethylenically unsaturated polymerizable group; m is 1 to 6; each X1 is independently —O— or —NR4—, where R4 is H or C1-C4 alkyl; and n is 0 or 1. Also described are dental articles prepared from a dental composition comprising an addition-fragmentation agent and methods of treating a tooth surface.Type: ApplicationFiled: May 8, 2015Publication date: August 27, 2015Inventors: William H. Moser, Guy D. Joly, Larry R. Krepski, Babu N. Gaddam, Ahmed S. Abuelyaman, Bradley D. Craig, Timothy D. Dunbar, Chuntao Cao, Joel D. Oxman, Afshin Falsafi, Hoa T. Bui
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Patent number: 9056043Abstract: Dental compositions are described comprising an addition-fragmentation agent comprising at least one ethylenically unsaturated terminal group and a backbone unit comprising an ?,?-unsaturated carbonyl; at least one monomer comprising at least two ethylenically unsaturated group; and inorganic oxide filler. The addition-fragmentation agent is preferably free-radically cleavable. The addition-fragmentation agent preferably comprises at least two ethylenically unsaturated terminal groups, such as (meth)acTylate groups. In some embodiments, the addition-fragmentation agent has the formula: wherein R1, R2 and R3 are each independently Zm, -Q-, a (hetero)alkyl group or a (hetero)aryl group with the proviso that at least one of R1, R2 and R3 is Zm-Q-; Q is a linking group have a valence of m+1; Z is an ethylenically unsaturated polymerizable group; m is 1 to 6; each X1 is independently —O— or —NR4—, where R4 is H or C1-C4 alkyl; and n is 0 or 1.Type: GrantFiled: February 8, 2012Date of Patent: June 16, 2015Assignee: 3M Innovative Properties CompanyInventors: Guy D. Joly, Larry R. Krepski, Babu N. Gaddam, Ahmed S. Abuelyaman, Bradley D. Craig, Timothy D. Dunbar, Chuntao Cao, Joel D. Oxman, Afshin Falsafi, William H. Moser, Hoa T. Bui
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Patent number: 8980969Abstract: Addition-fragmentation agents of the formula are disclosed having the following functional groups: 1) a labile addition-fragmentation group that can cleave and reform to relieve strain, 2) a free-radically polymerizable group, and 3) a surface-modifying functional group that associates with the surface of a substrate.Type: GrantFiled: August 14, 2012Date of Patent: March 17, 2015Assignee: 3M Innovative Properties CompanyInventors: Guy D. Joly, Ahmed S. Abuelyaman, Bradley D. Craig, Afshin Falsafi, Joel D. Oxman, Larry R. Krepski, William H. Moser, Serkan Yurt, Ann R. Fornof
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Publication number: 20140234528Abstract: 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: ApplicationFiled: April 23, 2014Publication date: August 21, 2014Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Bradley D. Craig, Tsi-Zong Tzou, Afshin Falsafi
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Publication number: 20140213686Abstract: A method of dispensing a hardenable dental composition, which can form a temporary bond, comprising 1) providing multi-part hardenable dental composition comprising part (A) in the form of a paste comprising acid-reactive glass particles and a liquid selected from the group consisting of water, a monomer having at least one ethylenically unsaturated group per monomer molecule, and a combination thereof; and part (B) comprising a water soluble polyacid and a liquid selected from the group consisting of water, a monomer having at least one ethylenically unsaturated group per monomer molecule, and a combination thereof; wherein an adhesion reducing component is included in part (A); part (B); or parts (A) and (B); water is included in part (A); part (B); or parts (A) and (B); the monomer having at least one ethylenically unsaturated group per monomer molecule is included in part (A); part (B); or parts (A) and (B); and at least one component for initiating polymerization of the monomer is included in part (A); pType: ApplicationFiled: April 1, 2014Publication date: July 31, 2014Inventors: Afshin Falsafi, Joel D. Oxman, Hoa T. Bui, Anupa N. Patel
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Publication number: 20140206788Abstract: Addition-fragmentation agents of the formula are disclosed having the following functional groups: 1) a labile addition-fragmentation group that can cleave and reform to relieve strain, 2) a free-radically polymerizable group, and 3) a surface-modifying functional group that associates with the surface of a substrate.Type: ApplicationFiled: August 14, 2012Publication date: July 24, 2014Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Guy D. Joly, Ahmed S. Abuelyaman, Bradley D. Craig, Afshin Falsafi, Joel D. Oxman, Larry R. Krepski, William H. Moser, Serkan Yurt, Ann R. Fornof
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Publication number: 20130316307Abstract: Dental compositions are described comprising an addition-fragmentation agent comprising at least one ethylenically unsaturated terminal group and a backbone unit comprising an ?,?-unsaturated carbonyl; at least one monomer comprising at least two ethylenically unsaturated group; and inorganic oxide filler. The addition-fragmentation agent is preferably free-radically cleavable. The addition-fragmentation agent preferably comprises at least two ethylenically unsaturated terminal groups, such as (meth)acTylate groups. In some embodiments, the addition-fragmentation agent has the formula: wherein R1, R2 and R3 are each independently Zm, -Q-, a (hetero)alkyl group or a (hetero)aryl group with the proviso that at least one of R1, R2 and R3 is Zm-Q-; Q is a linking group have a valence of m+1; Z is an ethylenically unsaturated polymerizable group; m is 1 to 6; each X1 is independently —O— or —NR4—, where R4 is H or C1-C4 alkyl; and n is 0 or 1.Type: ApplicationFiled: February 8, 2012Publication date: November 28, 2013Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Guy D. Joly, Larry R. Krepski, Babu N. Gaddam, Ahmed S. Abuelyaman, Bradley D. Craig, Timothy D. Dunbar, Chuntao Cao, Joel D. Oxman, Afshin Falsafi, William H. Moser, Hoa T. Bui
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Patent number: 8557893Abstract: Substituted saccharide compounds, dental compositions comprising substituted saccharide compounds, and methods of using dental compositions are described. In one embodiment, the substituted saccharide amide compound comprises a hydrophobic group and at least one free-radically polymerizable group with the proviso that the hydrophobic group is not bonded to the ethylenically unsaturated carbon atom of the free-radically polymerizable group. The hydrophobic group is typically bonded to a nitrogen atom of a saccharide amine residue or a carbonyl moiety of saccharide amide residue.Type: GrantFiled: August 19, 2011Date of Patent: October 15, 2013Assignee: 3M Innovative Properties CompanyInventors: Jie Yang, Sumita B. Mitra, Yi He, Brian A. Shukla, Naimul Karim, Afshin Falsafi, Richard B. Ross, Paul R. Klaiber, George W. Griesgraber
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Publication number: 20130164709Abstract: Substituted saccharide compounds, dental compositions comprising substituted saccharide compounds, and methods of using dental compositions are described. In one embodiment, the substituted saccharide amide compound comprises a hydrophobic group and at least one free-radically polymerizable group with the proviso that the hydrophobic group is not bonded to the ethylenically unsaturated carbon atom of the free-radically polymerizable group. The hydrophobic group is typically bonded to a nitrogen atom of a saccharide amine residue or a carbonyl moiety of saccharide amide residue.Type: ApplicationFiled: August 19, 2011Publication date: June 27, 2013Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Jie Yang, Sumita B. Mitra, Yi He, Brian A. Shukla, Naimul Karim, Afshin Falsafi, Richard B. Ross, Paul R. Klaiber, George W. Griesgraber
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Patent number: 8465284Abstract: Methods and compositions including an aqueous liquid that includes an acid-sensitive dye are disclosed for use in dental and orthodontic procedures. The aqueous liquid can be useful for providing a visible color change to indicate contact with acidic materials including, for example, etching compositions, self-etching adhesives, and self-adhesive compositions.Type: GrantFiled: July 7, 2005Date of Patent: June 18, 2013Assignee: 3M Innovative Properties CompanyInventors: Bradley D. Craig, Robert Lee, Ahmed S. Abuelyaman, Afshin Falsafi, Steven M. Aasen, Joel D. Oxman
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Patent number: 8450388Abstract: The present application provides dental fillers, and methods of making and using dental fillers that include a treated surface that includes a caseinate. Dental compositions including such dental fillers can be useful for delivering ions to the oral environment. Dental compositions, and methods of using dental compositions that include a caseinate and a hardenable resin or a water-dispersible, polymeric film former are also provided.Type: GrantFiled: July 11, 2012Date of Patent: May 28, 2013Assignee: 3M Innovative Properties CompanyInventors: Richard P. Rusin, Sumita B. Mitra, Kevin M. Cummings, Paul A. Burgio, Afshin Falsafi
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Publication number: 20120295214Abstract: A method of dispensing a hardenable dental composition comprising 1) providing a two-part hardenable dental composition, and 2) extruding the composition through a static mixer in fluid communication with a first reservoir containing the first part and a second reservoir containing the second part, wherein a plunger is positioned in each reservoir for simultaneously forcing both parts into the static mixer, extruding the composition through the static mixer, and dispensing the composition, and wherein an extrusion force is applied to the plunger for extruding the composition through the static mixer without the aid of a mechanical advantage provided by an attached or external device. Also disclosed is a method of bonding a prosthetic device to a dental structure using the dispensing method, a device for dispensing the composition using the dispensing method, a kit comprising the device, and the composition used in the dispensing method.Type: ApplicationFiled: December 16, 2010Publication date: November 22, 2012Inventors: Yizhong Wang, Afshin Falsafi, Joel D. Oxman, Tiffany T. Ton
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Publication number: 20120277343Abstract: The present application provides dental fillers, and methods of making and using dental fillers that include a treated surface that includes a caseinate. Dental compositions including such dental fillers can be useful for delivering ions to the oral environment. Dental compositions, and methods of using dental compositions that include a caseinate and a hardenable resin or a water-dispersible, polymeric film former are also provided.Type: ApplicationFiled: July 11, 2012Publication date: November 1, 2012Inventors: Richard P. Rusin, Sumita B. Mitra, Kevin M. Cummings, Paul A. Burgio, Afshin Falsafi
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Publication number: 20120258424Abstract: The abstract has been amended as follows: A method of dispensing a hardenable dental composition, which can form a temporary bond, comprising 1) providing multi-part hardenable dental composition comprising part (A) in the form of a paste comprising acid-reactive glass particles and a liquid selected from the group consisting of water, a monomer having at least one ethylenically 10 unsaturated group per monomer molecule, and a combination thereof; and part (B) comprising a water soluble polyacid and a liquid selected from the group consisting of water, a monomer having at least one ethylenically unsaturated group per monomer molecule, and a combination thereof; and 2) extruding the composition through a static mixer in fluid communication with a first reservoir containing the part (A) and a second reservoir 20 containing the part (B); wherein a plunger is positioned in each reservoir for simultaneously forcing part (A) and part (B) into the static mixer.Type: ApplicationFiled: December 16, 2010Publication date: October 11, 2012Inventors: Afshin Falsafi, Joel D. Oxman, Hoa T. Bui, Anupa N. Patel
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Patent number: 8278368Abstract: The present application provides dental fillers, and methods of making and using dental fillers that include a treated surface that includes a caseinate. Dental compositions including such dental fillers can be useful for delivering ions to the oral environment. Dental compositions, and methods of using dental compositions that include a caseinate and a hardenable resin or a water-dispersible, polymeric film former are also provided.Type: GrantFiled: November 7, 2005Date of Patent: October 2, 2012Assignee: 3M Innnovatve Properties CompanyInventors: Richard P. Rusin, Sumita B. Mitra, Kevin M. Cummings, Paul A. Burgio, Afshin Falsafi
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Patent number: 8029286Abstract: The present invention is directed to dental compositions that can be used as adhesives for bonding a dental material to a dental structure surface and/or as a dental restorative material. The dental composition is preferably applied to a dental structure surface under conditions effective to etch the dental structure surface.Type: GrantFiled: September 19, 2008Date of Patent: October 4, 2011Assignee: 3M Innovative Properties CompanyInventors: Bradley D. Craig, Steven M. Aasen, Ahmed S. Abuelyaman, David K. Cinader, Afshin Falsafi, Reinhold Hecht, Thomas Luchterhandt, Sumita B. Mitra, Prabhakara S. Rao, Brian A. Shukla, Markus Watermann