Patents by Inventor Phyllis F. Albert

Phyllis F. Albert 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).

  • Method for removing oil or asphalt from inorganic particles having pigment in an outer layer thereof
    Patent number: 5338368
    Abstract: A method for deoiling oil residues from surfaces of inorganic particles each having pigment in an outer layer thereon, comprising contacting the surfaces with a deoiling solution comprising a mixture of monocyclic terpene and aliphatic petroleum distillates in an amount and manner effective to wet substantially all the surfaces of the inorganic particles, whereby the deoiling solution removes substantially all the oil residues from the surfaces of the inorganic particles.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: August 16, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert B. Fletcher, Wilson S. Bigham, Phyllis F. Albert