Patents by Inventor Grodon B. Blackwell

Grodon B. Blackwell 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).

  • Dental composite restorative material and method of restoring a tooth
    Publication number: 20020128347
    Abstract: A composite material is provided which, while having an unusually high filler content may be extruded from a dental syringe and remains easily adaptable in the dental cavity. When materials of the present invention are cured, dental restorations are provided which have unusually high surface hardness and yield strength, as well as a low volume shrinkage on curing. This is achieved by use of a mixture of filler particles with a specific size, size range, and size relationship. Such a combination of properties makes the material of the present invention particularly useful for restoring cavities in posterior teeth.
    Type: Application
    Filed: October 16, 2001
    Publication date: September 12, 2002
    Inventors: Grodon B. Blackwell, Karin Utz
  • Dental composite restorative material and method of restoring a tooth
    Patent number: 6306927
    Abstract: A composite material is provided which, while having an unusually high filler content may be extruded from a dental syringe and remains easily adaptable in the dental cavity. When materials of the present invention are cured, dental restorations are provided which have unusually high surface hardness and yield strength, as well as a low volume shrinkage on curing. This is achieved by use of a mixture of filler particles with a specific size, size range, and size relationship. Such a combination of properties makes the material of the present invention particularly useful for restoring cavities in posterior teeth.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: October 23, 2001
    Assignee: Dentsply DeTrey GmbH
    Inventors: Grodon B. Blackwell, Karen Utz