Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7381055 | Dental devices used for filling cavities with composite material A dental device for retaining composite material within a cavity is described. The device provides accurate placement of a retaining matrix band which holds dental composite material in place within the cavity under repair and precludes or prevents migration of the ... | 06/03/2008 |
| 7322823 | Dental matrix retainer The invention relates to a dental matrix retainer (1) used as an aid when filling two-surface cavities in the molars. It comprises a matrix holder (3) and a device for tensioning a matrix band (2) placed in the form of a loop (22) around ... | 01/29/2008 |
| 7284983 | Matrix band retainer A matrix band retainer for dental restoration has a unitary member of a stiff planar spring material. The unitary member has an open ring substantially in a first plane, with the plane of the material of the ring perpendicular to the first plane. A tine at each end ... | 10/23/2007 |
| 7175432 | Dental contact matrix limited A dental contact matrix system is described for the placement of dental fillings. The dental contact matrix system includes a matrix, a retainer for placing and retaining the 5 matrix and an elastic wedge. The retainer includes two lugs or tines that fit between two... | 02/13/2007 |
| 7165970 | Dental instrument A dental instrument includes a first arm, a second arm, which is pivotally coupled to the first arm about a pivot axis, and a spring. The first and second arms are pivotal with respect to each other in a plane generally orthogonal to the pivot axis. Each of the arms... | 01/23/2007 |
| 7077651 | Dental implement for tooth restorations A dental implement includes a wire member that forms a generally ring-shaped portion and first and second ends, which depend from the ring-shaped portion. The ring-shaped portion lies in a plane, with the first and second ends depending from the generally ring-shape... | 07/18/2006 |
| 6960082 | Atraumatic approximal space dilator The invention relates to a dental device for dilating interdental spaces. The device comprises two interdental matrices that can be inserted into interdental spaces two retaining arrangements to retain the interdental matrices, and a spacer device for guiding the re... | 11/01/2005 |
| 6439886 | Inflatable dental device A device having pliable walls is provided for placement in the mouth of a patent to serve, in one manner, as a matrix barrier with walls of the device bearing upon opposed tooth surfaces. An inlet permits inflation of the device, as by a dental syringe, o... | 08/27/2002 |
| 6336810 | Ring for use in preparing teeth for restoration The invention is an open-ended ring used in the preparation of a tooth for a restorative procedure. The ring is used in conjunction with a shield to secure the shield between a tooth to be restored and an adjacent tooth. The result is a close contact bein... | 01/08/2002 |
| 6293796 | Dental matrix clamp for tooth restoration procedures A matrix clamp used in dental procedures to restore teeth to their natural shapes has a pair of gripping portions that are each connected to a cross-over bar. When the gripping portions are depressed by finger pressure, a pair of clamping tines connected ... | 09/25/2001 |
| 6261095 | Dental tool for tooth restoration jIn restoration of teeth, the use of conventional matrix bands and wedges tends to leave gaps or spaces which can through inefficient restoration lead to fracture or infection, and also prove to be time consuming and inefficient. This invention addresses ... | 07/17/2001 |
| 6231341 | Dental Matrix tensioner A lingual dental matrix tensioner comprising two posts maintained parallel by two parallel rods through the posts at a right angle to the post axes One rod is threaded and has an end knob for adjusting the spacing between the posts, the other rod is a gui... | 05/15/2001 |
| 6206697 | Device for the retention and adaptation of a matrix for dental restorations The device for the retention and the adaptation of a matrix to the treated portion of a tooth includes a tightener clamp whose ends are each provided with an adaptation cushion having anchoring elements and adaptation elements, the cushion being destined ... | 03/27/2001 |
| 5788491 | Dental filling matrix band retainer method A dental matrix retention apparatus which comprises a longitudinally extending frame member, and two laterally extending fingers at an end of the frame member, the fingers being integral with the frame member, each finger having longitudinally spaced prim... | 08/04/1998 |
| 5788499 | Posterior composite restoration instrument and method A method and apparatus for restoration of teeth using light curable restoratives while assuring interproximal contact between the restored tooth and an adjacent tooth. The apparatus is in the form of a hand-held instrument with a specialized tip to hold a... | 08/04/1998 |
| 5722831 | Apparatus for fastening a matrix band to a tooth An apparatus for fastening a matrix band to a tooth includes an elongated frame, an elongated slide member, a locking unit and a single-direction positioning mechanism. A front end of the support frame is formed with a retaining member which engages slida... | 03/03/1998 |
| 5626475 | Dental matrix tensioner A dental matrix tensioner has a casing containing a pin rotatable relative to the casing, the pin having a slot therein for releasably receiving a dental matrix and for tightening the matrix about a tooth upon rotation of the pin relative to the casing. A... | 05/06/1997 |
| 5622496 | Technique for repairing teeth A double matrix band and technique for using the same is utilized in tooth repair to minimize interproximal spacing. The first portion of the matrix band is wrapped around the tooth adjacent to that being repaired, and the second portion of the band is th... | 04/22/1997 |
| 5607302 | Matrix retainer apparatus for dental restorations A matrix retainer apparatus for dental restorations is formed from a resilient, substantially planar main body, a pair of fines extending from the ends of the main body and retention members provided on the tines. The retention members serve to increase t... | 03/04/1997 |
| 5584692 | Tensioning gripper for ondotological use In a tensioning gripper with a ring and a coaxially arranged rotary pin, both the ring and the pin are provided with a slot suitable for receiving a matrix to be tensioned. The slot of the rotary pin has a symmetry plane parallel to the longitudinal axis ... | 12/17/1996 |
| 5460525 | Dual matrix band retainer A dual dental matrix band retainer for use in dentistry comprising a first matrix band retainer which is connected to a second matrix band retainer. Each matrix band retainer is provided with a matrix band which is looped around a different posterior toot... | 10/24/1995 |
| 5342197 | Dental matrix retainer clamp A disposable dental matrix retainer clamp for holding a matrix band, is disclosed. The retainer clamp comprises a main body element having a generally centrally located first longitudinal axis and first and second opposed lateral sides. A head element hav... | 08/30/1994 |
| 5055045 | Disposable dental matrix retainer clamp A dental matrix retainer package includes a plastic matrix retainer clamp which permits a matrix band to be unlocked from its tightened position over a tooth without releasing the matrix band from the clamp entirely, permits a matrix band to be swiveled t... | 10/08/1991 |
| 4915627 | Matrix clamp for dentistry A matrix clamp for dentistry comprises a frame, a threaded rod screwingly displaceable in the frame and having a front end and a rear end, a coulisse block arranged to releasably hold ends of a loop of a matrix band having an adjustable width, the couliss... | 04/10/1990 |
| 4310305 | Mechanical device for holding elastic articles A mechanical device for holding elastic articles comprising a pair of circlips pliers having a set of primary jaws and a set of handles. The primary jaws are adapted to open when the handles are squeezed together. The pliers further comprise a set of seco... | 01/12/1982 |
