Patents by Inventor Charles F. Cox

Charles F. Cox 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: 20240115468
    Abstract: There is provided a composition for teeth desensitization. The composition comprises from 1 to 15 wt. % of suspended crystals of oxalic acid potassium salt dihydrate having a size of from 50 nm to less than 1000 nm. The composition comprises from 0.5 to 10 g/L of NaOH and has a pH of less than 2.
    Type: Application
    Filed: October 5, 2023
    Publication date: April 11, 2024
    Inventor: Charles F. COX
  • Publication number: 20180318191
    Abstract: A dental cleaning system and method is provided. The dental system contains: a first component containing an aqueous composition that includes —a carboxylic acid, a glycol, a metal chloride hydrate, water, and a surfactant; and, a second optional component selected from a metal carbonate, a metal bicarbonate, and mixtures thereof. The dental cleaning method includes: applying component one to teeth to be cleaned to thereby create a film over the teeth; optionally applying component two over the film created by component one and reacting the two components; and rinsing the teeth once cleaning is affected.
    Type: Application
    Filed: May 4, 2018
    Publication date: November 8, 2018
    Inventors: Charles F. Cox, Bradley A. Cox, Jeffrey S. Cox
  • Patent number: 6582680
    Abstract: A method of forming a solution of oxalic acid potassium salt dihydrate, useful for desensitizing dentin, comprising the steps of admixing an effective amount of oxalic acid potassium salt dihydrate in water having a pH of 2.0-4.0, heating the solution at a temperature range from 85° F. to 100° F. until a suspension is formed, ultrasonically vibrating this suspension for an effective amount of time and frequency to reduce the oxalic acid potassium salt dihydrate to a particle size of 1 to 10 microns.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: June 24, 2003
    Inventor: Charles F. Cox
  • Patent number: 6500407
    Abstract: A method of forming a solution of oxalic acid potassium salt dihydrate, useful for desensitizing dentin, comprising the steps of admixing an effective amount of oxalic acid potassium salt dihydrate in water having a pH of 2.0-4.0, heating the solution at a temperature range from 85° F. to 100° F. until a suspension is formed, ultrasonically vibrating this suspension for an effective amount of time and frequency to reduce the oxalic acid potassium salt dihydrate to a particle size of 1 to 10 microns.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: December 31, 2002
    Inventor: Charles F. Cox
  • Publication number: 20020187110
    Abstract: A method of forming a solution of oxalic acid potassium salt dihydrate, useful for desensitizing dentin, comprising the steps of admixing an effective amount of oxalic acid potassium salt dihydrate in water having a pH of 2.0-4.0, heating the solution at a temperature range from 85° F. to 100° F. until a suspension is formed, ultrasonically vibrating this suspension for an effective amount of time and frequency to reduce the oxalic acid potassium salt dihydrate to a particle size of 1 to 10 microns.
    Type: Application
    Filed: April 29, 2002
    Publication date: December 12, 2002
    Inventor: Charles F. Cox
  • Publication number: 20020187109
    Abstract: A method of forming a solution of oxalic acid potassium salt dihydrate, useful for desensitizing dentin, comprising the steps of admixing an effective amount of oxalic acid potassium salt dihydrate in water having a pH of 2.0-4.0, heating the solution at a temperature range from 85° F. to 100° F. until a suspension is formed, ultrasonically vibrating this suspension for an effective amount of time and frequency to reduce the oxalic acid potassium salt dihydrate to a particle size of 1 to 10 microns.
    Type: Application
    Filed: April 29, 2002
    Publication date: December 12, 2002
    Inventor: Charles F. Cox
  • Patent number: 6458339
    Abstract: A method of forming a solution of oxalic acid potassium salt dihydrate, useful for desensitizing dentin, comprising the steps of admixing an effective amount of oxalic acid potassium salt dihydrate in water having a pH of 2.0-4.0, heating the solution at a temperature range from 85° F. to 100° F. until a suspension is formed, ultrasonically vibrating this suspension for an effective amount of time and frequency to reduce the oxalic acid potassium salt dihydrate to a particle size of 1 to 10 microns.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: October 1, 2002
    Inventor: Charles F. Cox
  • Patent number: 6423301
    Abstract: A method of decreasing the permeability of dentin by the application of an effective amount of oxalic acid potassium salt, dihydrate is an aqueous solution at a pH of about 2.0 to 4.0 to the dentin.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: July 23, 2002
    Inventor: Charles F. Cox
  • Publication number: 20020081268
    Abstract: A method of decreasing the permeability of dentin by the application of an effective amount of oxalic acid potassium salt, dihydrate is an aqueous solution at a pH of about 2.0 to 4.0 to the dentin.
    Type: Application
    Filed: August 14, 2001
    Publication date: June 27, 2002
    Inventor: Charles F. Cox
  • Publication number: 20010004455
    Abstract: A method of decreasing the permeability of dentin by the application of an effective amount of oxalic acid potassium salt, dihydrate in an aqueous solution at a pH of about 2.0 to 4.0 to the dentin.
    Type: Application
    Filed: December 20, 2000
    Publication date: June 21, 2001
    Inventor: Charles F. Cox
  • Patent number: 5862931
    Abstract: A collapsible shipping container comprising a base portion, three walls which are hinged to the base at their respective lower edges, a fourth wall which assembles to the base by sliding into a channel, four identical corner posts having a pair of channels for sliding on to the vertical edges of the four sides, and a top lid. The hinges on the side walls allow the three hinged side panels to fold over onto each other in a tightly layered configuration. The hinges do not carry a load which allows the containers to be stacked. The corner posts have locking pins which fit into holes on the tops of the walls to firmly lock the walls together. Skids are provided on the bottom portion to allow the container to be picked up and moved by forklifts. The top lid holds the corner posts and completely encloses the collapsed container. Alternatively, the container may accept snap-in casters on the bottom.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: January 26, 1999
    Inventors: Charles F. Cox, Thomas F. Cox