Patents by Inventor Dan Ericson

Dan Ericson 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).

  • Patent number: 9149343
    Abstract: A dental instrument, suitable for use when creating a dental filling, is provided. The dental instrument includes a wedge and a matrix. The matrix is fixedly attached to the wedge, and the wedge is adapted to be inserted into the approximal space between two teeth of a patient. The wedge has a bow shape along a length axis of the wedge, the matrix has a first bow shape along a length axis of the matrix, and the matrix also has a second bow shape along an axis perpendicular to the length axis of the matrix. A method of using the dental instrument and a disposable system, which further comprises a protective member, is further provided.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: October 6, 2015
    Assignee: Directa AB
    Inventors: Dan Ericson, Jan Johansson, Orjan Arkang, Stefan Leffler, Olof Larsson
  • Publication number: 20110306007
    Abstract: A dental instrument, suitable for use when creating a dental filling is provided. The dental instrument comprises a wedge and a matrix. The matrix is fixedly attached to the wedge, and the wedge is adapted to be inserted into the approximal space between two teeth of a patient. The wedge comprises a bow shape along a length axis of the wedge, the matrix comprises a first bow shape along a length axis of the matrix, and the matrix comprises a second bow shape along an axis perpendicular to the length axis of the matrix. A method of using the dental instrument and a disposable system, which further comprises a protective member, is further provided.
    Type: Application
    Filed: January 20, 2010
    Publication date: December 15, 2011
    Applicant: Directa AB
    Inventors: Dan Ericson, Jan Johansson, Orjan Arkang, Stefan Leffler, Olof Larsson
  • Publication number: 20080014546
    Abstract: The invention relates to a tool for making a dental filling of a light-hardening material. The tool comprises a tip (3) intended to be pressed down into the light-hardening material in connection with the filling of a tooth, as well as a holder (4) shaped as a sleeve with a surrounding wall (5) with an inner wall surface (14), which holder (4) is intended to receive a light guide (7). The holder comprises flexible members arranged to bear against, and by a certain force to hold, light guides of various outer dimensions. Moreover, the holder (4) is designed to press a light guide (7) placed in the holder (4) against the inner wall surface (14) of the holder, by a bearing pressure that varies along the periphery of the inner wall surface.
    Type: Application
    Filed: May 11, 2005
    Publication date: January 17, 2008
    Applicant: DENDEMA AKTIEBOLAG
    Inventors: Gustaf Sundstrom, Dan Ericson
  • Patent number: 6491520
    Abstract: A dental instrument is provided for removing caries attacked dentine in connection with chemical-mechanical treatment of caries by means of a caries-dissolving solution applied to the caries for loosening the caries tooth substance. The instrument comprises a tool head with a number of scraping edges or bristles for scraping away the loosened caries tooth substance. In the spacings formed therebetween drops of the gel solution used for the chemical-mechanical treatment can be carried (transported) up to the tooth treatment site. The instrument is power-driven in order to provide the tool head with a predetermined scraping motion.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: December 10, 2002
    Assignee: MediTeam Dental AB
    Inventors: Lennart Carlsson, Rolf Bornstein, Dan Ericson
  • Patent number: 6413502
    Abstract: The invention relates to a preparation for use in chemical-mechanical treatment of caries in the form of a two-component caries dissolving liquid in which one of the components consists of sodium hypochlorite and the other component of amino acids, preferably three amino-acids with different charge states; one neutral, one with a negative net charge and one with a positive net charge. A viscosity increasing substance in the form of 3% carboxy methyl cellulose, or any other polysaccharide, as well as a coloring agent, 0.04% Erythrosin, which is able to interact with carious tooth substance has been added to the amino acid component. This means that less liquid is spent, the liquid becomes easier to control and handle and the suspended material becomes more visible.
    Type: Grant
    Filed: July 1, 1999
    Date of Patent: July 2, 2002
    Assignee: Medi Team Dentalutveckling I Goteborg AB
    Inventors: Rolf Bornstein, Dan Ericson
  • Patent number: 6403060
    Abstract: The invention relates to a preparation for use in chemical-mechanical treatment of caries in the form of a two-component caries dissolving liquid in which one of the components consists of sodium hypochlorite and the other component of a substance with the ability to reduce the aggressive influence of sodium hypochlorite on mucous membranes. The other component is a gel component which consists of a gel substance without any amino acids or a gel substance mixed with one or more amino acids.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: June 11, 2002
    Assignee: Mediteam Dentalutveckling I
    Inventors: Rolf Bornstein, Dan Ericson
  • Patent number: 6099310
    Abstract: The invention relates to a dental instrument for removing carious dentine in connection with chemical-mechanical treatment of caries by means of a caries-dissolving solution applied to the caries for loosening the carious tissue. The instrument comprises at least one non-rotating tool-head (4, 5) for manually scraping away the loosened carious dental material. The tool head is star-shaped with a number of scraping edges (6) having a curved outer contour (periphery) for excavating loosened carious dental material in connection with said treatment method. The scraping edges (6) are designed to scrape in different directions, the bottom parts as well as the sides (peripheral parts) of a tooth cavity. The open spaces (9) formed between the scraping edges (6) admit transport by the instrument of drops of the solution used for the chemical-mechanical treatment method up to the carious tooth site.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: August 8, 2000
    Assignee: MediTeam Dentalutveckling I Goteborg AB
    Inventors: Rolf Bornstein, Dan Ericson
  • Patent number: D627887
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: November 23, 2010
    Assignee: Directa AB
    Inventors: Jan Johansson, Dan Ericson, Orjan Arkang, Stefan Leffler, Olof Larsson