Patents by Inventor Varin Ayala

Varin Ayala 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 producing fully oxidized white liquor
    Patent number: 5500085
    Abstract: A method for white liquor oxidation in a kraft mill utilizes a two-stage selective oxidation system in which the first stage is operated to remove sulfide while the second stage is operated to oxidize a significant fraction of the remaining oxidizable sulfur compounds to sulfate. The resulting selectively oxidized white liquor products are used as alkali sources for various process steps in the mill. Optionally, white liquor can be oxidized in a single stage to convert a significant fraction of the oxidizable sulfur compounds to sulfate. Methods for controlling the selective oxidation process are disclosed.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: March 19, 1996
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Vincent L. Magnotta, Varin Ayala, John F. Cirucci
  • Selective white liquor oxidation
    Patent number: 5382322
    Abstract: A method for white liquor oxidation in a kraft mill utilizes a two-stage selective oxidation system in which the first stage is operated to remove sulfide while the second stage is operated to oxidize a significant fraction of the remaining oxidizable sulfur compounds to sulfate. The resulting selectively oxidized white liquor products are used as alkali sources for various process steps in the mill. Optionally, white liquor can be oxidized in a single stage to convert a significant fraction of the oxidizable sulfur compounds to sulfate. Methods for controlling the selective oxidation process are disclosed.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: January 17, 1995
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Vincent L. Magnotta, Ronald C. Naddeo, Varin Ayala, John F. Cirucci, Virgil G. Fox, Jr.
  • Perfluorinated dibutyl derivatives compounds
    Patent number: 4849553
    Abstract: Novel compositions of matter are disclosed having the formula: ##STR1## wherein the carbon rings are fully fluorinated to remove all hydrogens and olefinic character. The compositions have utility as heat transfer agents, hydraulic fluids, vapor phase soldering fluids, gas (O.sub.2, N.sub.2, CO.sub.2, H.sub.2, etc.) transport agents, such as in biological and medical fields, as well as utility as burn-in test fluid.
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: July 18, 1989
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Webb I. Bailey, Frank K. Schweighardt, Varin Ayala
  • Perfluorinated Di-isopropylmethyl decalin
    Patent number: 4827053
    Abstract: Novel compositions include compounds of the formula: ##STR1## wherein the carbon rings are fully fluorinated.
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: May 2, 1989
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Webb I. Bailey, Frank K. Schweighardt, Varin Ayala