Patents by Inventor Dan Fischer

Dan Fischer 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: 20070298378
    Abstract: A dental post analog includes an analog post body, and at least one of means for determining the depth of placement of the distal insertion portion, means for gripping the post body, or means for tethering the post body. The analog post body includes a distal insertion portion and a proximal portion that extends beyond the distal insertion portion. The distal insertion portion is configured for temporary insertion into a recess of a tooth, and at least approximately corresponds to the size, shape, and length of a permanent dental post. The post analog may be radiopaque. It may be disposable or autoclavable.
    Type: Application
    Filed: September 7, 2007
    Publication date: December 27, 2007
    Applicant: Ultradent Products, Inc.
    Inventors: Phillip Brown, James Broome, Dan Fischer, Randall Leininger, Bruce McLean
  • Publication number: 20070262178
    Abstract: A delivery tip for dispensing a high viscosity composition (e.g., a fluoride varnish composition) includes a tip body and a fiber flocked enlarged wing element disposed near a distal delivery end of the tip body. The tip body includes a passageway extending between an inlet orifice at a proximal end and a delivery orifice at the distal delivery end. A ratio of the width of the enlarged wing element to an inside diameter of the delivery orifice is at least about 5:1, which controls flow of the fluoride varnish composition through the delivery orifice while also providing for a wide application width for easily brushing the composition onto a patient's tooth.
    Type: Application
    Filed: May 12, 2006
    Publication date: November 15, 2007
    Applicant: Ultradent Products, Inc.
    Inventors: Dan Fischer, Bruce McLean
  • Publication number: 20070255200
    Abstract: A time-indicating syringe-in-syringe mixing system for mixing, storing and dispensing a two-part composition that, when mixed together, yields a time-sensitive dental composition. The system includes a first plunger, a hollow second plunger configured to contain a first component, a syringe barrel configured to contain a second component, structure for recording a date when a first component was mixed with a second component, and structure for protecting the recorded date from damage or alteration. The first plunger is slidably disposed within the hollow second plunger, and the hollow second plunger is slidably disposed within the syringe barrel during use. A second syringe may be coupled to the system to provide syringe-to-syringe mixing.
    Type: Application
    Filed: May 1, 2006
    Publication date: November 1, 2007
    Applicant: Ultradent Products, Inc.
    Inventors: Bruce McLean, Dan Fischer
  • Publication number: 20070196287
    Abstract: Composition and methods include a dental bleaching agent, potassium nitrate a fluoride salt for enhanced whitening and reduced tooth sensitivity. The potassium nitrate and fluoride salt both reduce or eliminate tooth sensitivity that may otherwise be caused by the bleaching agent. For prolonged treatment of teeth, lower quantities of potassium nitrate (e.g., 0.5%) have actually been found to work better than larger quantities (e.g., 3%). The dental compositions may be applied directly to the person's teeth, or they may be loaded into a comfortable fitting, flexible, thin-walled dental tray and placed over the person's teeth. In that case, the dental compositions will include a tackifying agent, such as carboxypolymethylene, which assists the composition in retaining the dental tray over the person's teeth as a result of the adhesive properties of the dental composition rather than due to mechanical interlocking of the tray over the person's teeth.
    Type: Application
    Filed: April 10, 2007
    Publication date: August 23, 2007
    Applicant: Ultradent Products, Inc.
    Inventor: Dan Fischer
  • Publication number: 20070111160
    Abstract: Gingival retraction cords are constructed from two or more strands that are interlocked to form a knitted, braided, woven, or twisted retraction cord. At least one strand is made from an absorbent material and another strand is made from a degradation-resistant material, such as nylon, polyester, fiberglass, or metal. The absorbent strands are impregnated with an active agent. The degradation-resistant strands resist degradation by the active agent. Alternatively, one or more strands are used to make the knit, weave, or braid and each strand is made from two or more different fibers. For example, one or more absorbent fibers and one or more synthetic fibers can be twisted to make a blended strand. The blended strands can be used to knit, braid, or weave a retraction cord. Because the degradation-resistant strands are part of the strand pattern, the retraction cords can be made sturdier without adversely affecting the cord's inherent deformation properties.
    Type: Application
    Filed: January 12, 2007
    Publication date: May 17, 2007
    Applicant: Ultradent Products, Inc.
    Inventors: Dan Fischer, Ammon Black
  • Publication number: 20070106210
    Abstract: A pre-dosed, pre-packaged mixing system and associated method for mixing, storing, and dispensing a two-part dental composition that becomes less stable upon mixing. The mixing system includes a pre-dosed, pre-packaged quantity of a first component contained within a first chamber, and a pre-dosed, pre-packaged quantity of a second component contained within a second chamber. The chambers are separated by separation means so as to separate the two-components prior to mixing. Once mixed, the practitioner is able to record a mixing and/or expiration date on at least a portion of the mixing system so as to indicate a shelf-life of the less stable mixed dental composition.
    Type: Application
    Filed: October 2, 2006
    Publication date: May 10, 2007
    Applicant: Ultradent Products, Inc.
    Inventor: Dan Fischer
  • Publication number: 20070092451
    Abstract: A system for storing a dental composition having a given shelf-life. The storage system includes a container (e.g., a syringe) and activatable time sensitive marking means disposed on or within the container. Upon activation of the time sensitive marking means, the system begins to indicate time lapsed since activation. The time sensitive marking means allows a dental practitioner to determine whether a dental composition within the container has expired, or how much time remains before the composition expires and should either be used up or discarded.
    Type: Application
    Filed: October 25, 2005
    Publication date: April 26, 2007
    Inventors: Dan Loveridge, Dan Fischer, Jeff Wagner
  • Publication number: 20070068594
    Abstract: Locking structures and syringe systems provide increased locking force and/or sealing between a syringe and another syringe or applicator tip coupled thereto. One locking structure includes a tubular member having an interior surface, an exterior surface, and a longitudinal axis extending therethrough, one or more first tabs projecting from the exterior surface of the tubular member so as to at least partially encircle the tubular member, and means for increasing resistance between the one or more first tabs and corresponding structure (e.g., grooves) of a device (e.g., a syringe or applicator tip) that is selectively coupleable to the tubular member.
    Type: Application
    Filed: September 26, 2005
    Publication date: March 29, 2007
    Inventors: Dan Fischer, Bruce McLean
  • Publication number: 20070071791
    Abstract: A delivery system that includes a bone growth promoting material encapsulated within a water absorptive gelatinizable covering is used to promote bone growth in order to repair a bone defect and/or strengthen a weakened bone region. The delivery system may be shaped and sized in order to fit within a bleeding wound (e.g. one that is formed in the gingiva when a tooth is extracted). The covering may be formed of a gelatinizable gauze that forms a gel-like material when moistened with water. The delivery system is contained within a moisture resistant package prior to use. Alternatively, the delivery system comprises a bone growth promoting material and thickening agent contained within a syringe that, upon adding water, form a viscous gel or stiff putty. A polymerizable resin may be placed over the bone growth composition after placement on a bone to form a protective barrier layer.
    Type: Application
    Filed: October 13, 2006
    Publication date: March 29, 2007
    Inventor: Dan Fischer
  • Publication number: 20060246400
    Abstract: An exoskeleton support and associated placement system for use in placing a thin, flexible dental treatment strip over a person's tooth surfaces. The exoskeleton support includes an exoskeleton body that is curved so as to approximate the curvature of a person's dental arch. The exoskeleton support includes an inner surface that is oriented toward a person's tooth surfaces during use, an outer surface oriented away from the person's tooth surfaces during use, and means for temporarily holding or attaching a flexible dental treatment strip to the inner surface of the exoskeleton support. The exoskeleton support allows a user to more easily and accurately place a dental treatment strip on tooth surfaces to be treated.
    Type: Application
    Filed: May 2, 2005
    Publication date: November 2, 2006
    Inventors: Dan Fischer, Bruce McLean
  • Publication number: 20060245187
    Abstract: A dental curing light including an elongate wand having a proximal end and a distal end, a plurality of LEDs disposed at or near a distal end of the elongate wand and a printed circuit board for mounting the plurality of LEDs. The LEDs include a main through mount LED and a plurality of surface mount LEDs positioned around the main through mount LED. The main LED is through mounted relative to the printed circuit board such that the power connections of the main through mount LED are made through a hole or holes in the printed circuit board. The power connections of the main through mount LED are made on an opposite surface of the printed circuit board relative to the “top” surface to which the surface mount LEDs are mounted.
    Type: Application
    Filed: April 29, 2005
    Publication date: November 2, 2006
    Inventors: Robert Scott, Dee Jessop, Dan Fischer
  • Publication number: 20060228676
    Abstract: A dental post analog includes an analog post body, and at least one of means for determining the depth of placement of the distal insertion portion, means for gripping the post body, or means for tethering the post body. The analog post body includes a distal insertion portion and a proximal portion that extends beyond the distal insertion portion. The distal insertion portion is configured for temporary insertion into a recess of a tooth, and at least approximately corresponds to the size, shape, and length of a permanent dental post. The post analog may be radiopaque. It may be disposable or autoclavable.
    Type: Application
    Filed: March 31, 2005
    Publication date: October 12, 2006
    Inventors: Phillip Brown, James Broome, Dan Fischer, Randall Leininger, Bruce McLean
  • Publication number: 20060223033
    Abstract: A non-custom, tray-shaped dental treatment device includes a moisture-resistant barrier layer having a front side wall and a bottom wall, and a dental treatment composition. In addition, the tray-shaped dental treatment device includes at least one of the following anatomical features to enhance the fit of the device: (1) the bottom wall includes a plurality of cuts positioned to help the bottom wall better conform to abrupt changes in the diameters of a person's teeth where the bicuspids and canines meet, and/or (2) the bottom wall includes at least one V-shaped or U-shaped indentation configured to be inserted into the depression typically found along the top surfaces of a person's molars, and/or (3) the front side wall and bottom wall include radii of curvature that account for typical flaring of a patient's incisors.
    Type: Application
    Filed: June 5, 2006
    Publication date: October 5, 2006
    Applicant: Ultradent Products, Inc.
    Inventors: Bruce McLean, Dan Fischer, Peter Allred
  • Publication number: 20060223034
    Abstract: A dental kit for use in placing a dental post in a prepared recess (e.g., a root canal) of a person's tooth. The dental kit includes a finishing drill, a plurality of permanent dental posts, a dental post analog, and optionally, a starter drill. The kit also includes a container having an interior, means for suspending the kit components within the container, and a removable lid.
    Type: Application
    Filed: April 1, 2005
    Publication date: October 5, 2006
    Inventor: Dan Fischer
  • Publication number: 20060223035
    Abstract: A kit of dental sub-kits for use in placing a dental post in a prepared recess (e.g., a root canal) of a person's tooth. The kit includes a tray having an interior recess configured to removably receive therein a plurality of individual dental sub-kits. Each sub-kit may have an associated color, number, letter, or other marking to distinguish it from at least one other sub-kit within the kit. The color or marking associated with each sub-kit identifies the size of components contained within the sub-kit. Each sub-kit includes a finishing drill and one or more permanent dental posts. Each sub-kit may optionally include a starter drill and/or a dental post analog. Each sub-kit and its contents may be disposable or autoclavable.
    Type: Application
    Filed: April 1, 2005
    Publication date: October 5, 2006
    Inventor: Dan Fischer
  • Publication number: 20060223027
    Abstract: A syringe delivery system for dispensing a highly viscous material through a syringe delivery opening. The system includes a syringe barrel having a delivery opening, a plunger including a threaded shaft that threadably engages the syringe barrel for selectively dispensing a viscous material through the delivery opening, and a plunger gripping member in griping communication with the plunger that includes means for sealing the threaded shaft of the plunger so as to prevent contamination by foreign matter. According to one embodiment, a sheath may be included that covers the threaded shaft of the plunger so as to hide the plunger beneath the sheath. The sheath provides a sealed environment for the threaded shaft so as to prevent entrance or contamination by foreign matter.
    Type: Application
    Filed: April 1, 2005
    Publication date: October 5, 2006
    Inventors: Wade Smith, Bruce McLean, Dan Fischer
  • Publication number: 20060189707
    Abstract: Kits and methods for improving the wear and abrasion resistance of filling material involving applying a coating material to at least a portion of a surface of a dental filling material. The dental filling material to be coated is substantially free of organically modified inorganic particles. The coating material includes a polymerizable resin and a plurality of inorganic particles that are organically modified to have polymerizable functional groups thereon. The coating material is cured such that the polymerizable resin and the functional groups on the organically modified inorganic particles co-polymerize or cross-link to form a cured protective coating layer on the dental filling material. The cured coating layer has a maximum thickness of less than about 30 microns.
    Type: Application
    Filed: February 24, 2005
    Publication date: August 24, 2006
    Inventors: Norbert Abels, Dan Fischer, Claus-H Backes
  • Publication number: 20060183080
    Abstract: A kit used to form a customized dental tray from a heat-softenable polymeric material using a person's teeth as a template includes a preformed tray and a color-changing temperature indicator. The color-changing temperature indicator may be attached to or separate from the preformed tray. When heated together, the indicator signals to the user by a color change when the tray has reached a customization temperature range. This signal prevents errors of underheating and overheating common in the customization process.
    Type: Application
    Filed: November 21, 2003
    Publication date: August 17, 2006
    Inventors: Vasiliy Nosov, Dan Fischer
  • Publication number: 20060172260
    Abstract: A dental treatment system used to treat (e.g., bleach) a person's teeth. The inventive system includes an inner dental treatment tray having a tray configuration so as to fit over at least a portion of a person's upper or lower dental arch. The inner dental treatment tray is sufficiently thin and flexible so as to at least partially conform to a person's teeth without heating when used in combination with a dental treatment and/or adhesive composition. The dental treatment system includes an outer support tray positioned adjacent to the inner dental treatment tray so as to maintain the inner dental treatment tray in the tray configuration prior to placement of the inner dental treatment tray over the person's teeth. The dental treatment system also includes temporary adhesion means (e.g., a weak adhesive) for maintaining the outer support tray adjacent to the inner dental treatment tray prior to and during placement of the inner dental treatment tray over the person's teeth.
    Type: Application
    Filed: January 31, 2005
    Publication date: August 3, 2006
    Inventors: Peter Allred, Dan Fischer
  • Publication number: 20060078848
    Abstract: A dental treatment tray used to provide a desired treatment is injection molded from a composition that includes at least one thermoplastic resin and at least plasticizer. The plasticized thermoplastic resin permits the dental treatment tray to be injection molded even while having a wall thickness less than about 0.015 inch. The plasticizer increases the melt flow index of the thermoplastic resin while in a molten state, which facilitates complete filling of the mold cavity by the thermoplastic resin. The plasticizer also softens the thermoplastic polymer while in a solidified state in order to yield a dental tray that is even more flexible and comfortable for the user to wear.
    Type: Application
    Filed: October 12, 2004
    Publication date: April 13, 2006
    Inventors: Dan Fischer, Derrick Christman