Patents by Inventor Naimul Karim

Naimul Karim 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: 20100330524
    Abstract: Methods of manufacturing hardenable dental articles, packaged hardenable dental articles, and methods of packaging hardenable dental articles are disclosed. In various embodiments, the manufacturing may involve molding a hardenable dental material in a mold cavity that may be lined with a mold liner. The mold body may also form the package of the hardenable dental article formed within the mold cavity. In other embodiments, the hardenable dental articles may be provided in mold cavities located in sacrificial mold bodies that may be torn, stretched, softened, dissolved, etc. to release the hardenable dental articles in the mold cavities.
    Type: Application
    Filed: September 8, 2010
    Publication date: December 30, 2010
    Inventors: Naimul Karim, Darin J. Meyertholen, Robert M. Biegler, Kevin M. Cummings, Lance C. Gore, James R. Kvitrud, Robert W. Peterson, Daniel T. Scott
  • Publication number: 20100285429
    Abstract: A dental mill blank is formed from a number of different self-supporting, malleable, curable (SMC) materials distributed within the blank so that a dental article machined from the blank closely resembles natural dentition in appearance or function. When in an uncured state, a single mill blank can be adapted to fit a variety of different tooth sizes and shapes, thus reducing the inventory of mill blank types required for fabrication of the range of possible tooth shapes and sizes.
    Type: Application
    Filed: November 18, 2008
    Publication date: November 11, 2010
    Inventors: Naimul Karim, Sumita B. Mitra
  • Publication number: 20100268363
    Abstract: A dental article is fabricated from an SMC material using three-dimensional data captured from natural dentition to guide a computer-controlled milling machine. The three-dimensional data may include scans of an original tooth structure and a prepared tooth surface to characterize all surfaces of a dental article, or certain features may be created within a computer-assisted design environment taking account of occlusion, proximal contacts, and the like. In addition the model applied to a computer-controlled milling machine may account for shrinkage of the SMC material during any post-milling curing steps in order to ensure an accurate fit to the prepared tooth surface.
    Type: Application
    Filed: November 20, 2008
    Publication date: October 21, 2010
    Inventors: Naimul Karim, Sumita B. Mitra
  • Patent number: 7816423
    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: October 13, 2008
    Date of Patent: October 19, 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
  • Publication number: 20100260924
    Abstract: A digital painting process provides computer-controlled finishing of dental articles. The process can selectively apply different materials over portions of a dental article in one or more layers to achieve a multi-chromatic finish having a variety of colors, finishes, and surface properties that closely match the appearance and function of human dentition.
    Type: Application
    Filed: November 20, 2008
    Publication date: October 14, 2010
    Inventors: Naimul Karim, Sumita B. Mitra
  • Patent number: 7811486
    Abstract: Methods of manufacturing hardenable dental articles, packaged hardenable dental articles, and methods of packaging hardenable dental articles are disclosed. In various embodiments, the manufacturing may involve molding a hardenable dental material in a mold cavity that may be lined with a mold liner. The mold body may also form the package of the hardenable dental article formed within the mold cavity. In other embodiments, the hardenable dental articles may be provided in mold cavities located in sacrificial mold bodies that may be torn, stretched, softened, dissolved, etc. to release the hardenable dental articles in the mold cavities.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: October 12, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Naimul Karim, Darin J. Meyertholen, Robert M. Biegler, Kevin M. Cummings, Lance C. Gore, James R. Kvitrud, Robert W. Peterson, Daniel T. Scott
  • Publication number: 20100244294
    Abstract: A dental article such as a crown is fabricating by layering one or more preformed shells of SMC material onto an understructure. The understructure may be fabricated from any suitably strong material for use in replacing dentition. At the same time, a number of SMC shells may be used to provide a finished dental article having a natural-looking, multi-chromatic appearance. The SMC material(s) may be cured to provide an exterior hardness suitable for use in dental applications.
    Type: Application
    Filed: November 24, 2008
    Publication date: September 30, 2010
    Inventors: Naimul Karim, Sumita B. Mitra, Marcelino Salviejo-Rivas
  • Publication number: 20100233655
    Abstract: By capturing a highly detailed three-dimensional digital model of dentition, a suitable replacement dental article be fabricated with a combination of digitally-controlled reductive processes such as milling and digitally-controlled additive processes such as digital painting. A dental article so-manufactured can provide an aesthetically pleasing, multi-chromatic appearance that closely matches surrounding dentition.
    Type: Application
    Filed: November 18, 2008
    Publication date: September 16, 2010
    Inventors: Naimul Karim, Sumita B. Mitra
  • Publication number: 20100062394
    Abstract: A dental article includes an external layer formed of a self-supporting hardenable preformed material having a dental article shape defined by an external layer surface. The external layer defines an interior volume. An interior material is disposed within the interior volume. The interior material is different than the external hardenable preformed material and the interior material has a yield stress value of 100 dyn/cm2 or greater.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 11, 2010
    Inventors: Todd D. Jones, Naimul Karim, Dwight W. Jacobs
  • 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
  • Publication number: 20100021868
    Abstract: Dental crown forms and methods of using them are disclosed. The dental crown forms may include one or more of the following features: a handle attached to the dental crown form at a location removed from the base of the dental crown form; a vented handle through which excess amounts of hardenable dental material can pass during placement of the crown form; and one or more lines of weakness that may be separated to remove a dental crown form from hardenable dental material after placement of the filled crown form. The dental crown forms may also be located in packages with hardenable dental material located within the dental crown forms as packaged.
    Type: Application
    Filed: October 5, 2009
    Publication date: January 28, 2010
    Inventors: James R. Kvitrud, Kevin M. Cummings, Naimul Karim
  • 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
  • Publication number: 20090305195
    Abstract: A solid dental crown and methods of using the solid dental crown are disclosed. The solid dental crown includes, a self-supporting solid hardenable preformed dental crown having an external crown shape defined by an external crown surface. The external crown surface defines a crown volume that is substantially filled with a hardenable composition. The hardenable composition has sufficient malleability so that the solid preformed dental crown can be pressed onto a prepared tooth surface to form a recess in the solid preformed dental crown defined by a recess surface that is complimentary to the prepared tooth surface.
    Type: Application
    Filed: September 10, 2007
    Publication date: December 10, 2009
    Inventors: Todd D. Jones, Naimul Karim, Dwight W. Jacobs, Kathleen A. Randolph
  • 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
  • Publication number: 20080293018
    Abstract: Preformed malleable dental crowns with a side-generic external shape with a plane of symmetry in the facial-lingual direction and/or a plane of symmetry in the mesial-distal direction. The preformed dental crowns also include a hardenable composition that has sufficient malleability such that the side-generic external shape can be formed into, e.g., a left-side specific or right-side specific adjusted external shape. Methods of the invention may include fitting the dental crowns by adjusting or forming them to provide side-specific features, followed by hardening of the hardenable composition.
    Type: Application
    Filed: April 27, 2006
    Publication date: November 27, 2008
    Inventors: Naimul Karim, Robert M. Biegler, David J. Colburn, Dwight W. Jacobs, Steven C. Keck
  • Publication number: 20080045626
    Abstract: Carbosilane-containing polymers (including oligomers) having the following structural features: greater than one repeat unit; at least 4 Si-arylene bonds; at least 1 (meth)acrylate moiety, Si—H moiety, or both; no Si—O bonds; preferably at least 4 silicon atoms; wherein 2 silicon atoms are separated by one arylene group in each repeat unit.
    Type: Application
    Filed: July 13, 2005
    Publication date: February 21, 2008
    Inventors: Kevin Lewandowski, Ahmed Abuelyaman, Todd Jones, Babu Gaddam, Sumita Mitra, Naimul Karim, Andrian Eckert, Peter Bissinger
  • Patent number: 6964985
    Abstract: The present invention provides a dental material that includes a hardenable resin system and a first initiator system capable of hardening the hardenable resin.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: November 15, 2005
    Assignee: 3M Innovative Properties Co.
    Inventors: Naimul Karim, Joel D. Oxman, Ahmed S. Abuelyaman, Babu N. Gaddam
  • 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
  • Publication number: 20050100868
    Abstract: Methods of manufacturing hardenable dental articles, packaged hardenable dental articles, and methods of packaging hardenable dental articles are disclosed. In various embodiments, the manufacturing may involve molding a hardenable dental material in a mold cavity that may be lined with a mold liner. The mold body may also form the package of the hardenable dental article formed within the mold cavity. In other embodiments, the hardenable dental articles may be provided in mold cavities located in sacrificial mold bodies that may be torn, stretched, softened, dissolved, etc. to release the hardenable dental articles in the mold cavities.
    Type: Application
    Filed: August 19, 2004
    Publication date: May 12, 2005
    Inventors: Naimul Karim, Darin Meyertholen, Robert Biegler, Kevin Cummings, Lance Gore, James Kvitrud, Robert Peterson, Daniel Scott
  • Publication number: 20050042576
    Abstract: Compositions, particularly for forming dental article forms, having a self-supporting structure with sufficient malleability to be subsequently customized into a second shape and then optionally cured, and methods.
    Type: Application
    Filed: August 19, 2003
    Publication date: February 24, 2005
    Inventors: Joel Oxman, Naimul Karim, Steven Keck