Patents by Inventor Leif Hagne

Leif Hagne 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).

  • Extensible polishing mono-filament dental floss
    Patent number: 6340027
    Abstract: Monofilament dental floss/tape of polymer material including fluoride and polishing powder the dental floss/tape (1) being ribbon-shaped and having material properties that enable it to be stretched to increase its length by at least 100% and also to reduce its cross-sectional area by up to ten times, and also a method fot the use of monofilament polymer dental floss/tape (1) by preparing a suitable length of dental floss/tape (1) for cleaning the teeth , by extending it to a reduce cross section so that the area of the whole piece of floss/tape can thereafter be used to clean the teeth distally and/or mesially.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: January 22, 2002
    Assignee: Athena Nordic AB
    Inventors: Leif Hagne, Lars Jönsson
  • Inlay, inlay holder, method for tooth restoration, and tooth restoration set for carrying out the method
    Patent number: 5567156
    Abstract: A prefabricated inlay (1) for restoring a tooth by application and fixation in a cavity prepared in the tooth and having essentially the same shape as the inlay part adapted for insertion, is provided with a pin (6) which projects from the inlay part not adapted for insertion and which is arranged to be received in an inlay holder. The whole inlay (1) is made of a material translucent to light that is suitable for curing a light-curing material used for fixing the inlay in the cavity. The inlay holder has a light source and a light guide having a tip (18) with a recess (19) for receiving the pin (6) of the inlay (1), such that the light generated by the light source can be guided through the light guide and the inlay (1) to the light-curing material.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: October 22, 1996
    Assignee: Nordiska Dental AB
    Inventors: Leif Hagne, Rolf Greven
  • Improvements in a method of and a retraction cord for uncovering and draining the preparation limit line of teeth
    Patent number: 4871311
    Abstract: A retraction cord is provided for use in uncovering and draining the preparation limit line of a tooth where the tooth emerges from gum tissue which is subject to bleeding during the course of conducting a procedure such as the taking of a dental impression, the cementing of a crown and the performance of conservative caries therapy. Practicing the method includes inserting said cord in a gingival crevice extending perimetrically of a tooth having a preparation limit line, where the tooth emerges from gum tissue, between the tooth and the gum tissue, and permitting the cord to absorb moisture so that the cord swells and thereby mechanically uncovers said preparation limit line and mechanically compresses said gum tissue, tending to stop bleeding of such gum tissue.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: October 3, 1989
    Inventor: Leif Hagne