Patents by Inventor Laura M. Randall

Laura M. Randall 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).

  • Amorphous precipitated silica abrasive
    Patent number: 5747003
    Abstract: A statistically large population of particles of amorphous precipitated silica comprising pigmentary phase particles and glassy phase particles and having a glassy phase fraction in the range of from 0.3 to 30 area percent is useful as an abrasive for dentifrice compositions, especially toothpaste.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: May 5, 1998
    Assignee: PPG Industries, Inc.
    Inventors: Shantilal M. Mohnot, Harold E. Swift, Thomas G. Krivak, Robert H. Fear, Laura M. Randall, Laurence E. Jones