Patents by Inventor G. John Schoeffel

G. John Schoeffel 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: 9872748
    Abstract: In an endodontic procedure, after the working of a root canal by instruments to remove material and shape the walls of the canal, irrigant is supplied via a microcannula. A vacuum is applied via a tube which is inserted partway down the root canal. The irrigant is supplied in a manner sufficient to ensure delivery to a side vent of the microcannula. The vacuum at the end of tube draws the irrigant and debris up from the apex of the root canal into the tube. The side vent may have a plurality of more round holes, a diagonal slit, or a U shaped slit, or any other shape. The vent opening should not extend more than approximately 0.75 mm from the closed spherical tip of the microcannula, it must be burr free and the opening must be smaller than the internal diameter of the microcannula.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: January 23, 2018
    Assignee: Ormco Corporation
    Inventor: G. John Schoeffel
  • Publication number: 20170196658
    Abstract: In an endodontic procedure, after the working of a root canal by instruments to remove material and shape the walls of the canal, irrigant is supplied via a microcannula. A vacuum is applied via a tube which is inserted partway down the root canal. The irrigant is supplied in a manner sufficient to ensure delivery to a side vent of the microcannula. The vacuum at the end of tube draws the irrigant and debris up from the apex of the root canal into the tube. The side vent may have a plurality of more round holes, a diagonal slit, or a U shaped slit, or any other shape. The vent opening should not extend more than approximately 0.75 mm from the closed spherical tip of the microcannula, it must be burr free and the opening must be smaller than the internal diameter of the microcannula.
    Type: Application
    Filed: August 10, 2016
    Publication date: July 13, 2017
    Inventor: G. John Schoeffel
  • Publication number: 20140363793
    Abstract: In an endodontic procedure, after the working of a root canal by instruments to remove material and shape the walls of the canal, irrigant is supplied via a microcannula. A vacuum is applied via a tube which is inserted partway down the root canal. The irrigant is supplied in a manner sufficient to ensure delivery to a side vent of the microcannula. The vacuum at the end of tube draws the irrigant and debris up from the apex of the root canal into the tube. The side vent may have a plurality of more round holes, a diagonal slit, or a U shaped slit, or any other shape. The vent opening should not extend more than approximately 0.75 mm from the closed spherical tip of the microcannula, it must be burr free and the opening must be smaller than the internal diameter of the microcannula.
    Type: Application
    Filed: May 19, 2014
    Publication date: December 11, 2014
    Applicant: ORMCO CORPORATION
    Inventor: G. John Schoeffel
  • Patent number: 8827705
    Abstract: In an endodontic procedure, after the working of a root canal by instruments to remove material and shape the walls of the canal, irrigant is supplied via a microcannula. A vacuum is applied via a tube which is inserted partway down the root canal. The tube and microcannula pass through a material created by a standard dental filling material of a composite nature which provides a seal at a position near the top of the coronal opening. The irrigant is supplied in a manner sufficient to ensure delivery to a side vent of the microcannula. The vacuum at the end of tube draws the irrigant and debris up from the apex of the root canal into the tube. The side vent may have a plurality of more round holes, a diagonal slit, or a U shaped slit, or any other shape. The vent opening should not extend more than approximately 0.75 mm from the closed spherical tip of the microcannula, it must be burr free and the opening must be smaller than the internal diameter of the microcannula.
    Type: Grant
    Filed: October 16, 2011
    Date of Patent: September 9, 2014
    Assignee: Ormco Corporation
    Inventor: G. John Schoeffel
  • Publication number: 20120034579
    Abstract: In an endodontic procedure, after the working of a root canal by instruments to remove material and shape the walls of the canal, irrigant is supplied via a microcannula. A vacuum is applied via a tube which is inserted partway down the root canal. The tube and microcannula pass through a material created by a standard dental filling material of a composite nature which provides a seal at a position near the top of the coronal opening. The irrigant is supplied in a manner sufficient to ensure delivery to a side vent of the microcannula. The vacuum at the end of tube draws the irrigant and debris up from the apex of the root canal into the tube. The side vent may have a plurality of more round holes, a diagonal slit, or a U shaped slit, or any other shape. The vent opening should not extend more than approximately 0.
    Type: Application
    Filed: October 16, 2011
    Publication date: February 9, 2012
    Applicant: DISCUS DENTAL, LLC
    Inventor: G. John Schoeffel
  • Publication number: 20080160481
    Abstract: In an endodontic procedure, after the working of a root canal by instruments to remove material and shape the walls of the canal, irrigant is supplied via a microcannula. A vacuum is applied via a tube which is inserted partway down the root canal. The tube and microcannula pass through a material created by a standard dental filling material of a composite nature which provides a seal at a position near the top of the coronal opening. The irrigant is supplied in a manner sufficient to ensure delivery to a side vent of the microcannula. The vacuum at the end of tube draws the irrigant and debris up from the apex of the root canal into the tube. The side vent may have a plurality of more round holes, a diagonal slit, or a U shaped slit, or any other shape. The vent opening should not extend more than approximately 0.75 mm from the closed spherical tip of the microcannula, it must be burr free and the opening must be smaller than the internal diameter of the microcannula.
    Type: Application
    Filed: October 30, 2007
    Publication date: July 3, 2008
    Applicant: Discus Dental, LLC
    Inventor: G. John Schoeffel
  • Patent number: 7226288
    Abstract: In an endodontic procedure, after the working of a root canal by instruments to remove material and shape the walls of the canal, irrigant is supplied via a microcannula. A vacuum is applied via a tube which is inserted partway down the root canal. The tube and microcannula pass through a material created by a standard dental filling material of a composite nature Which provides a seal at a position near the top of the coronal opening. The irrigant is supplied in a manner sufficient to ensure delivery to a side vent of the microcannula. The vacuum at the end of tube draws the irrigant and debris up from the apex of the root canal into the tube. The side vent may have a plurality of more round holes, a diagonal slit or a U shaped slit, or any other shape. The vent opening should not extend more than approximately 0.75 mm from the closed spherical tip of the microcannula, it must be burr free any the opening must be smaller than the internal diameter of the microcannula.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: June 5, 2007
    Assignee: Discus Dental Impressions, Inc.
    Inventor: G. John Schoeffel
  • Patent number: 6997714
    Abstract: After the working of a root canal by instruments to remove material and shape the walls of the canal, a microaspirator is inserted into the canal extending to about 5 mm from the apex and a vacuum is applied which sucks up some of the debris in the canal. Then a tube is inserted in the exposed opening of the canal with the vacuum still applied. Irrigant is supplied by the needle by an opening in the needle, but not under pressure. As the irrigant is supplied, it is drawn down to end of the aspirator by the vacuum which exists in the canal and up into the aspirator. The aspirator is removed and a second, smaller aspirator with a hole in its wall near its sealed end is inserted into the canal until it almost reaches the apex.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: February 14, 2006
    Inventor: G. John Schoeffel
  • Patent number: 5503554
    Abstract: Endodontic files which provide constant dentin volume removal from file to file based on the actual volume of dentin removed from file to file. Each file removes exactly the same increase in volume as its predecessor. In this manner, a clinician may use each file in a sequential manner from smallest to largest without the need to alternate sizes or rely on subjective factors. Correspondingly, the time required to prepare a patient's root canal drops as a function of the reduced need to interchange sizes along the way and provide a clinical method of preparing root canals that relies on objective clinical techniques.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: April 2, 1996
    Inventor: G. John Schoeffel