Patents by Inventor Laura Kajita

Laura Kajita 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).

  • Patent number: 11091393
    Abstract: The present invention involves a granular product to remove oil and grease from oily waste water; specifically targeting produced/flow-back water generated in the offshore oilfield industry. This granular product may be loaded into either filter media canisters or bulk filtration vessels and used onsite to filter the water. This invention may also be used as a pre-treatment step to other polishing filter systems.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: August 17, 2021
    Assignee: Oil-Dri Corporation of America
    Inventor: Laura Kajita
  • Publication number: 20190225541
    Abstract: The present invention involves a granular product to remove oil and grease from oily waste water; specifically targeting produced/flow-back water generated in the offshore oilfield industry. This granular product may be loaded into either filter media canisters or bulk filtration vessels and used onsite to filter the water. This invention may also be used as a pre-treatment step to other polishing filter systems.
    Type: Application
    Filed: January 15, 2019
    Publication date: July 25, 2019
    Inventor: Laura Kajita
  • Patent number: 9828301
    Abstract: The present invention relates to a mineral or organic carrier capable of binding a source for humates and/or fulvic acid; and a pH adjuster or modifier, methods for manufacturing the same as well as agricultural and pesticidal uses of the same.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: November 28, 2017
    Assignee: OIL-DRI CORPORATION OF AMERICA
    Inventor: Laura Kajita
  • Patent number: 9458475
    Abstract: The present methods involves methods of improving ethanol production which may comprise the addition of clay during ethanol production.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: October 4, 2016
    Assignee: OIL-DRI CORPORATION OF AMERICA
    Inventors: Robert G. Goss, Marc Herpfer, Laura Kajita, Yasmith Bernal
  • Publication number: 20160145162
    Abstract: The present invention relates to a mineral or organic carrier capable of binding a source for humates and/or fulvic acid; and a pH adjuster or modifier, methods for manufacturing the same as well as agricultural and pesticidal uses of the same.
    Type: Application
    Filed: November 24, 2015
    Publication date: May 26, 2016
    Inventor: Laura Kajita
  • Publication number: 20140141481
    Abstract: The present methods involves methods of improving ethanol production which may comprise the addition of clay during ethanol production.
    Type: Application
    Filed: October 9, 2013
    Publication date: May 22, 2014
    Applicant: Oil-Dri Corporation of America
    Inventors: Robert G. Goss, Marc Herpfer, Laura Kajita, Yasmith Bernal
  • Patent number: 5670435
    Abstract: A chemical composition and method for treating oil-contaminated waste waters, and, more particularly, waste waters in the form of oily emulsions that may also contain dissolved metal ions, and/or metal solids, to sorb (adsorb and/or absorb) the contaminants between and within platelets of sodium bentonite clay particles, and calcium bentonite clay particles, and the contaminants are encapsulated or trapped in a matrix of calcium bentonite platelets and sodium bentonite platelets that are flocculated by a flocculant, such as a cationic polymer, so that leaching of contaminants into the waste water, or subsequently into a liquid portion of a landfill, is unexpectedly reduced.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: September 23, 1997
    Assignee: AMCOL International Corporation
    Inventor: Laura Kajita
  • Patent number: 5578219
    Abstract: A method of treating a water-swellable clay after the clay has been mined and dried to improve its properties when in contact with contaminated water. After the common initial drying of the clay to a moisture content of 12% by weight or less, the clay is impregnated with an aqueous solution containing a dissolved, water-soluble polymer, in an amount of at least about 0.5% by weight based on the dry weight of the clay, and the clay is wetted to a moisture content of more than 12% by weight, preferably at least about 15% or more, based on the dry weight of the clay, and then redried to a moisture content of 12% by weight or less, based on the dry weight of the clay.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: November 26, 1996
    Assignee: AMCOL International Corporation
    Inventor: Laura Kajita
  • Patent number: 5556547
    Abstract: A method of treating a water-swellable clay after the clay has been mined and dried to improve its properties when in contact with contaminated water. After the common initial drying of the clay to a moisture content of 12% by weight or less, the clay is impregnated with an aqueous solution containing a dissolved, water-soluble polymer, in an amount of at least about 0.5% by weight based on the dry weight of the clay, and the clay is wetted to a moisture content of more than 12% by weight, preferably at least about 15% or more, based on the dry weight of the clay, and then redried to a moisture content of 12% by weight or less, based on the dry weight of the clay.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: September 17, 1996
    Assignee: AMCOL International Corporation
    Inventor: Laura Kajita
  • Patent number: 5476142
    Abstract: A flexible grout composition and method of disposing the composition in position, in contact with an earthen formation, such as a coating on a trench wall, or within a bore hole, for example to cement a conduit within the bore hole to prevent fluid loss, for sealing and grouting well casings, plugging abandoned wells, and waterproofing earthen structures, particularly in environments where the grout composition is in contact with contaminated water. The flexible grout composition includes a water-swellable clay, such as sodium bentonite; an optional solid particulate filler, such as an essentially nonswellable bentonite clay, such as calcium bentonite, herein defined as a bentonite clay having calcium as the predominant exchangeable cation; a water-soluble polymer; and an optional dispersing agent, such as sodium acid pyrophosphate (SAPP).
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: December 19, 1995
    Assignee: American Colloid Company
    Inventor: Laura Kajita
  • Patent number: 5407879
    Abstract: A method of treating a water-swellable clay after the clay has been mined and dried to improve its properties when in contact with contaminated water. After the common initial drying of the clay to a moisture content of 12% by weight or less, the clay is impregnated with an aqueous solution containing a dissolved, water-soluble polymer, in an amount of at least about 0.5% by weight based on the dry weight of the clay, and the clay is wetted to a moisture content of more than 12% by weight, preferably at least about 15% or more, based on the dry weight of the clay, and then redried to a moisture content of 12% by weight or less, based on the dry weight of the clay.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: April 18, 1995
    Assignee: American Colloid Company
    Inventor: Laura Kajita