Patents by Inventor David N. DiGiulio

David N. DiGiulio 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).

  • Hair conditioning article and a method of its use
    Patent number: 4206195
    Abstract: An article especially designed for conditioning hair comprising a flexible substrate releasably carrying a hair conditioning agent and a water soluble salt. The article when rubbed onto hair provides combing, detangling, static fly-away and softness benefits. Additionally the manageability of the hair is improved.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: June 3, 1980
    Assignee: The Procter & Gamble Company
    Inventors: Raymond E. Bolich, Jr., David N. DiGiulio
  • Method for remineralizing tooth enamel
    Patent number: 4080440
    Abstract: Demineralized tooth enamel is remineralized by first forming a metastable mixture by mixing a solution containing a soluble calcium salt with a solution containing a soluble phosphate salt, the mixture having a pH of from about 2.5 to about 4 and a ratio of calcium ions to phosphate ions of from 0.01 to 100; and second, applying the metastable mixture to the tooth surface. Preferably, the second solution contains a soluble fluoride salt and the metastable mixture has a pH of about 2.7.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: March 21, 1978
    Assignee: The Procter & Gamble Company
    Inventors: David N. DiGiulio, Robert J. Grabenstetter