Patents Represented by Attorney, Agent or Law Firm D. Byron Miller
  • Method for reducing sensitization or irritation in transdermal drug delivery and means therefor
    Patent number: 4885154
    Abstract: A method and means for reducing sensitization or irritation caused by transdermally delivered drugs, wherein one or more metabolic modulators is coadministered with a sensitizing or irritating drug.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: December 5, 1989
    Assignee: Alza Corporation
    Inventors: Michel J. N. Cormier, Philip W. Ledger, Alfred Amkraut, Jean P. Marty
  • Collecting agents for use in the froth flotation of silica-containing ores
    Patent number: 4725351
    Abstract: A new froth flotation collecting agent and an improved flotation process for beneficiating silica-containing ores, particularly phosphate ores, are provided. In the process, silica particles are selectively separated, by froth flotation, as a froth phase from mineral particles, particularly phosphate particles, remaining in an aqueous concentrate phase in the presence of a silica-activating ion and a mixed collecting agent containing an anionic collector and a cationic collector.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: February 16, 1988
    Assignee: International Minerals & Chemical Corp.
    Inventor: Vikram P. Mehrotra
  • Method of decolorizing wet process phosphoric acid
    Patent number: 4643883
    Abstract: A method of decolorizing wet process phosphoric acid containing organic color-imparting impurities is provided. The process includes treating the acid with a strong oxidant at a temperature in the range of about 50.degree. to about 150.degree. C. by slowly adding the oxidant to the acid over a period of time of at least about 3 hours. The oxidized acid then is contacted with a regenerable activated carbon, preferably in a packed column, in order to adsorb the oxidized color-imparting impurities.
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: February 17, 1987
    Assignee: International Minerals & Chemical Corp.
    Inventors: Earl E. Borchert, Robert J. Urban, Ray E. Barker