Patents by Inventor Hershall William Kaufman

Hershall William Kaufman 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: 5968036
    Abstract: An improved dental procedure and apparatus where ultraviolet radiation pulses are used to etch selectively both hard tissue and soft tissue in dental procedures. There exists distinct ablation thresholds for hard and soft tissue which are dependent on the material being ablated for a given wavelength of the ultraviolet radiation. Sufficient differences in ablation threshold exist for enamel, dentin, and carious material, thereby allowing dentists to perform both hard tissue and soft tissue procedures without excess damage to healthy enamel, dentin or other pulp structures.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: October 19, 1999
    Assignee: International Business Machines Corporation
    Inventors: Barry Dean Goodman, James Jeffrey Wynne, Hershall William Kaufman, Jason Matthew Jacobs
  • Patent number: 5968035
    Abstract: An improved dental procedure and apparatus where ultraviolet radiation pulses are used to etch selectively both hard tissue and soft tissue in dental procedures. There exists distinct ablation thresholds for hard and soft tissue which are dependent on the material being ablated for a given wavelength of the ultraviolet radiation. Sufficient differences in ablation threshold exist for enamel, dentin, and carious material, thereby allowing dentists to perform both hard tissue and soft tissue procedures without excess damage to healthy enamel, dentin or other pulp structures.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: October 19, 1999
    Assignee: International Business Machines Corporation
    Inventors: Barry Dean Goodman, James Jeffrey Wynne, Hershall William Kaufman, Jason Matthew Jacobs
  • Patent number: 5957691
    Abstract: An improved dental procedure contacts a tooth with a fluoride carrier to produce a fluoride containing layer on the tooth. The tooth is then irradiated with UV radiation in the wavelength range of 100-400 nm. The fluoride carrier is at least 70% transparent to UV radiation, and the radiation is provided with sufficiently low energy to avoid inflicting pain on the patient.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: September 28, 1999
    Inventors: Barry Dean Goodman, James Jeffrey Wynne, Hershall William Kaufman, Jason Matthew Jacobs
  • Patent number: 5954712
    Abstract: An improved dental procedure and apparatus where ultraviolet radiation pulses are used to etch selectively both hard tissue and soft tissue in dental procedures. There exists distinct ablation thresholds for hard and soft tissue which are dependent on the material being ablated for a given wavelength of the ultraviolet radiation. Sufficient differences in ablation threshold exist for enamel, dentin, and carious material, thereby allowing dentists to perform both hard tissue and soft tissue procedures without excess damage of healthy enamel, dentin or other pulp structures.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: September 21, 1999
    Assignee: International Business Machines Corporation
    Inventors: Barry Dean Goodman, James Jeffrey Wynne, Hershall William Kaufman, Jason Matthew Jacobs
  • Patent number: 5897321
    Abstract: An improved dental procedure and apparatus where ultraviolet radiation pulses are used to etch selectively both hard tissue and soft tissue in dental procedures. There exists distinct ablation thresholds for hard and soft tissue which are dependent on the material being ablated for a given wavelength of the ultraviolet radiation. Sufficient differences in ablation threshold exist for enamel, dentin, and carious material, thereby allowing dentists to perform both hard tissue and soft tissue procedures without excess damage to healthy enamel, dentin or other pulp structures.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: April 27, 1999
    Assignee: International Business Machines Corporation
    Inventors: Barry Dean Goodman, James Jeffrey Wynne, Hershall William Kaufman, Jason Matthew Jacobs
  • Patent number: 5785703
    Abstract: An improved dental procedure and apparatus where ultraviolet radiation pulses are used to etch selectively both hard tissue and soft tissue in dental procedures. There exists distinct ablation thresholds for hard and soft tissue which are dependent on the material being abated for a given wavelength of the ultraviolet radiation. Sufficient differences in ablation threshold exist for enamel, dentin, and carious material, thereby allowing dentists to perform both hard tissue and soft tissue procedures without excess damage to healthy enamel, dentin or other pulp structures.
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: July 28, 1998
    Assignee: International Business Machines Corporation
    Inventors: Barry Dean Goodman, James Jeffrey Wynne, Hershall William Kaufman, Jason Matthew Jacobs