Patents by Inventor Sumita B. Mitra

Sumita B. Mitra 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).

  • THERAPEUTIC DENTAL COMPOSITION AND RELATED METHODS
    Publication number: 20100150847
    Abstract: Dental compositions are provided comprising a compound of Formula (I) or a pharmaceutically acceptable salt thereof: wherein n is an integer from about 2 to about 5.
    Type: Application
    Filed: July 10, 2008
    Publication date: June 17, 2010
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Jie Yang, Bhaskar V. Velamakanni, Sumita B. Mitra, Alphonsus V. Pocius, John J. Stofko, JR., Jeremy M. Yarwood
  • Self-etching emulsion dental compositions and methods
    Patent number: 7699605
    Abstract: 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: Grant
    Filed: October 9, 2008
    Date of Patent: April 20, 2010
    Assignees: 3M Espe AG, 3M Innovative Properties Company
    Inventors: Steven M. Aasen, Ahmed S. Abuelyaman, David K. Cinader, Jr., Hendrik M. Grupp, Miriam Hansen, Thomas Klettke, Guenther Lechner, Kevin M. Lewandowski, Thomas Luchterhandt, Sumita B. Mitra, Prabhakara S. Rao, Victoria A. Russell, Michael S. Wendland
  • ADHESIVE COMPOSITION FOR HARD TISSUE
    Publication number: 20100090157
    Abstract: An adhesive composition including an etchant for a hard tissue surface, at least one multifunctional crosslinkable (meth)acrylate monomer with a functionality greater than 4, and water. The adhesive composition is a water-in-oil emulsion.
    Type: Application
    Filed: December 17, 2007
    Publication date: April 15, 2010
    Inventors: Prabhakara S. Rao, Steven M. Aasen, Ahmed S. Abuelyaman, Sumita B. Mitra, Bradley D. Craig, Brian A. Shukla, David J. Plaut, Victoria A. Russell
  • Hardenable self-supporting structures and methods
    Patent number: 7674850
    Abstract: Compositions, particularly for forming dental products, having a hardenable self-supporting structure with sufficient malleability to be subsequently customized into a second shape and then hardened, and methods.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: March 9, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Naimul Karim, Todd D. Jones, Kevin M. Lewandowski, Duane D. Fansler, James M. Nelson, Marcelino Salviejo-Rivas, Babu N. Gaddam, Ahmed S. Abuelyaman, Sumita B. Mitra
  • (METH)ACRYLOYL-CONTAINING MATERIALS, COMPOSITIONS, AND METHODS
    Publication number: 20100021869
    Abstract: Di-, tri-, and/or tetra-(meth)acryloyl-containing materials and compositions are provided. Such materials and compositions can preferably be hardened, without undue shrinkage, to provide hardened materials and/or compositions with properties useful, for example, in dental applications. In one aspect, the present invention provides a compound of the formula (Formula I) wherein: each X independently represents an oxygen atom (O) or a nitrogen atom (N); Y and A each independently represent an organic group, with the proviso that Y does not represent —NHCH2CH2— if (i) p=O and R1 represents —C(O)C(CH3)?CH2, and/or (ii) q=0 and R2 represents —C(O)C(CH3)?CH2; m=1 to 5; n=0 to 5; p and q are independently 0 or 1; and R1 and R2 each independently represent H, —C(O)CH?CH2, or —C(O)C(CH3)?CH2.
    Type: Application
    Filed: December 12, 2007
    Publication date: January 28, 2010
    Inventors: Ahmed S. Abuelyaman, Sumita B. Mitra
  • METHODS OF USING A DENTAL COMPOSITION HAVING AN ACIDIC COMPONENT AND A PHOTOBLEACHABLE DYE
    Publication number: 20100015578
    Abstract: Methods of using a dental composition having a photobleachable dye and an acidic component with a pKa of less than 4.5 are disclosed. The photobleachable dye is selected from the group consisting of aminoanthraquinone dyes, azo dyes, and combinations thereof. The aged color of the dental composition is substantially the same as the color of the dental composition immediately after hardening.
    Type: Application
    Filed: December 12, 2007
    Publication date: January 21, 2010
    Inventors: Afshin Falsafi, Joel D. Oxman, Tiffany T. Ton, Joan V. Brennan, David K. Cinader, JR., Bhaskar V. Velamakanni, Sumita B. Mitra
  • Dental compositions containing nanozirconia fillers
    Patent number: 7649029
    Abstract: 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: Grant
    Filed: May 17, 2004
    Date of Patent: January 19, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Brant U. Kolb, Hoa T. Bui, Jason P. Thalacker, Lani S. Kangas, Joel D. Oxman, Kenton D. Budd, Jacqueline C. Rolf, Sumita B. Mitra
  • DENTAL COMPOSITIONS WITH CALCIUM PHOSPHORUS RELEASING GLASS
    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
  • Self-adhesive dental compositions and methods
    Patent number: 7632098
    Abstract: 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: Grant
    Filed: August 11, 2004
    Date of Patent: December 15, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Afshin Falsafi, Steven M. Aasen, Ahmed S. Abuelyaman, David K. Cinader, Bradley D. Craig, Reinhold Hecht, Thomas Luchterhandt, Sumita B. Mitra, Joel D. Oxman, Prabhakara S. Rao, Brian A. Shukla, Markus Watermann
  • DENTAL FILLERS INCLUDING A PHOSPHORUS CONTAINING SURFACE TREATMENT, AND COMPOSITIONS AND METHODS THEREOF
    Publication number: 20090305194
    Abstract: The present application provides dental fillers, and methods of making and using dental fillers that include a treated surface that includes phosphorus and a divalent cation. Dental compositions including such dental fillers can be useful for delivering ions to the oral environment.
    Type: Application
    Filed: November 7, 2005
    Publication date: December 10, 2009
    Inventors: Richard P. Rusin, Sumita B. Mitra, Kevin M. Cummings
  • DENTAL COMPOSITIONS INCLUDING ORGANOGELATORS, PRODUCTS, AND METHODS
    Publication number: 20090305196
    Abstract: A hardenable dental composition that includes a polymerizable component and an organogelator.
    Type: Application
    Filed: September 12, 2007
    Publication date: December 10, 2009
    Inventors: Naimul Karim, Todd D. Jones, Kevin M. Lewandowski, Bradley D. Craig, Sumita B. Mitra, Jie Yang
  • DENTAL FILLERS, METHODS, COMPOSITIONS INCLUDING A CASEINATE
    Publication number: 20090304809
    Abstract: 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: Application
    Filed: November 7, 2005
    Publication date: December 10, 2009
    Inventors: Richard P. Rusin, Sumita B. Mitra, Kevin M. Cummings, Paul A. Burgio, Afshin Falsafi
  • DENTAL FILLERS AND COMPOSITIONS INCLUDING PHOSPHATE SALTS
    Publication number: 20090208909
    Abstract: The present application provides dental fillers, and methods of making and using dental fillers that include a treated surface that includes a phosphate salt. 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 phosphate salt and a hardenable resin or a water-dispersible, polymeric film former are also provided.
    Type: Application
    Filed: November 7, 2005
    Publication date: August 20, 2009
    Inventors: Richard P. Rusin, Sumita B. Mitra, Kevin M. Cummings
  • Dental compositions containing carbosilane monomers
    Patent number: 7576144
    Abstract: Carbosilane monomers that include the following structural features: at least two Si-arylene bonds; at least one (meth)acrylate moiety; no Si—O bonds; and preferably at least two silicon atoms.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: August 18, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Kevin M. Lewandowski, Ahmed S. Abuelyaman, Babu N. Gaddam, Sumita B. Mitra, Brian N. Holmes, Adrian S. Eckert, Peter Bissinger
  • Composition containing a polymerizable reducing agent, kit, and method
    Patent number: 7541393
    Abstract: The present invention provides a hardenable (i.e., curable by polymerization, crosslinking, ionic, or other chemical reaction) composition that includes polymerizable urea or thiourea compounds that function as reductants (i.e., reducing agents) in redox polymerization reactions.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: June 2, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Sumita B. Mitra, Afshin Falsafi
  • Hardenable dental compositions with low polymerization shrinkage
    Publication number: 20090118389
    Abstract: The present invention features a hardenable dental composition that contains: (1) at least one cyclic allylic compound having at least one sulfur atom in the ring, and (2) at least one at least one ethylenically unsaturated compound, such as a substituted (meth)acryloyl compound. The compositions also typically comprise an initiator system, preferably a photoinitator system containing at least 0.08 wt-% of one or more photosensitizers.
    Type: Application
    Filed: May 9, 2006
    Publication date: May 7, 2009
    Inventors: Ahmed S. Abuelyaman, Sumita B. Mitra, Kevin M. Lewandowski, David J. Plaut, Todd D. Jones
  • HARDENABLE SELF-SUPPORTING STRUCTURES AND METHODS
    Publication number: 20090032989
    Abstract: Compositions, particularly for forming dental products, having a hardenable self-supporting structure with sufficient malleability to be subsequently customized into a second shape and then hardened, and methods.
    Type: Application
    Filed: October 13, 2008
    Publication date: February 5, 2009
    Inventors: Naimul Karim, Todd D. Jones, Kevin M. Lewandowski, Duane D. Fansler, James M. Nelson, Marcelino Salviejo-Rivas, Babu N. Gaddam, Ahmed S. Abuelyaman, Sumita B. Mitra
  • SELF-ETCHING EMULSION DENTAL COMPOSITIONS AND METHODS
    Publication number: 20090035728
    Abstract: 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: Application
    Filed: October 9, 2008
    Publication date: February 5, 2009
    Inventors: Steven M. Aasen, Ahmed S. Abuelyaman, David K. Cinader, JR., Hendrik M. Grupp, Miriam Hansen, Thomas Klettke, Guenther Lechner, Kevin M. Lewandowski, Thomas Luchterhandt, Sumita B. Mitra, Prabhakara S. Rao, Victoria A. Russell, Michael S. Wendland
  • SELF-ETCHING DENTAL COMPOSITIONS AND METHODS
    Publication number: 20090011388
    Abstract: 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: Application
    Filed: September 19, 2008
    Publication date: January 8, 2009
    Inventors: 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
  • Methods of Applying Dental Agents to Dental Surfaces and Polymer Compositions
    Publication number: 20080305457
    Abstract: A method of applying a dental agent to a dental surface, the method including: applying a retentive polymeric coating to a dental surface; and subsequently contacting the retentive polymeric coating with a loading composition that includes a dental agent, wherein the contacting occurs under conditions effective to incorporate the dental agent into the retentive polymeric coating for release over time. Also provided are polymers that include a hydrophobic segment, a hydrophilic segment, a quaternary amine segment, and an alkoxy silane crosslinkable segment; and polymers that include a hydrophobic segment, a hydrophilic segment, a silicon-containing macromer segment, and an alkoxy silane crosslinkable segment.
    Type: Application
    Filed: December 28, 2006
    Publication date: December 11, 2008
    Inventors: Mahfuza B. Ali, Paul A. Burgio, Sumita B. Mitra