Patents by Inventor Edward KAVAZANJIAN

Edward KAVAZANJIAN 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).

  • Cementation methods
    Patent number: 11274323
    Abstract: The present invention provides methods for mineral precipitation and/or cementation of permeable or fractured non-porous materials using isolated urease.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: March 15, 2022
    Assignee: Arizona Board of Regents on behalf of Arizona State University
    Inventors: Edward Kavazanjian, Nasser Hamdan
  • ENZYME EXTRACTION METHODS
    Publication number: 20210395720
    Abstract: Disclosed are methods of extracting an enzyme, comprising soaking a seed in an aqueous solution, homogenizing the seed to produce a homogenized suspension, and filtering the homogenized suspension to produce a crude extract, wherein the crude extract comprises urease and non-urease proteins.
    Type: Application
    Filed: August 25, 2021
    Publication date: December 23, 2021
    Inventors: Edward Kavazanjian, Nasser Hamdan, Hamed Khodadadi Tirkolaei, Neda Javadi
  • BIOCEMENTATION SYSTEMS AND METHODS
    Publication number: 20210189238
    Abstract: The present disclosure provides a method of biocementation comprising contacting a granular, cohesionless soil with a solution, wherein the solution comprises urea, urease, a source of calcium ions, and a source of non-urease proteins, wherein the urea, urease, source of calcium ions, and source of non-urease proteins are provided in effective amounts suitable to cause crystallization of calcium carbonate.
    Type: Application
    Filed: March 4, 2021
    Publication date: June 24, 2021
    Inventors: Edward Kavazanjian, Nasser Hamdan, Hamed Khodadadi Tirkolaei, Abdullah Almajed
  • CEMENTATION METHODS
    Publication number: 20200340021
    Abstract: The present invention provides methods for mineral precipitation and/or cementation of permeable or fractured non-porous materials using isolated urease.
    Type: Application
    Filed: February 5, 2020
    Publication date: October 29, 2020
    Inventors: Edward Kavazanjian, Nasser Hamdan
  • Hydrogel biocement systems and methods
    Patent number: 10794029
    Abstract: A soil stabilization method of forming an admixture of at least one hydrogel precursor and urease enzyme, and contacting at least a portion of the admixture with soil, and forming a hydrogel network in-situ within at least a portion of the soil, wherein at least a portion of the hydrogel network includes in-situ precipitated calcium carbonate. In some embodiments, at least a portion of the hydrogel network is formed in-situ by polymerizing the at least one hydrogel precursor in the presence of the urease enzyme.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: October 6, 2020
    Assignee: Arizona Board of Regents on behalf of Arizona State University
    Inventors: Ximin He, Edward Kavazanjian, Nasser Hamdan, Zhi Zhao
  • Mineral precipitation methods
    Patent number: 10724198
    Abstract: The present invention provides methods for mineral precipitation of porous particulate starting materials using isolated urease.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: July 28, 2020
    Assignee: Arizona Board of Regents, a body corporate of the State of Arizona acting for and on behalf of Arizona State University
    Inventors: Edward Kavazanjian, Nasser Hamdan
  • Cementation methods
    Patent number: 10563233
    Abstract: The present invention provides methods for mineral precipitation and/or cementation of permeable or fractured non-porous materials using isolated urease.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: February 18, 2020
    Assignee: Arizona Board of Regents on behalf of Arizona State University
    Inventors: Edward Kavazanjian, Nasser Hamdan
  • MINERAL PRECIPITATION METHODS
    Publication number: 20190382976
    Abstract: The present invention provides methods for mineral precipitation of porous particulate starting materials using isolated urease.
    Type: Application
    Filed: August 22, 2019
    Publication date: December 19, 2019
    Inventors: Edward Kavazanjian, Nasser Hamdan
  • Methods and systems for in situ temporary containment of shallow contaminated soils
    Patent number: 10399130
    Abstract: A method for installing an in situ, low-permeability temporary horizontal barrier at depth for vertical containment of a soil mass including installing a low permeability vertical barrier having walls located to contain a predetermined soil volume, the vertical barrier having a horizontal surface area in a plane perpendicular to its walls; and injecting low permeability reagents capable of forming a temporary horizontal barrier in a pattern suitable for creating a horizontal subsurface barrier joined to all of the vertical barrier walls to form an in situ barrier.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: September 3, 2019
    Assignees: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY, CHEVRON U.S.A. INC.
    Inventors: Rolf U. Halden, Edward Kavazanjian, Alizee M. Jenck, Nasser Hamdan, Thomas Hoelen
  • Mineral precipitation methods
    Patent number: 10392767
    Abstract: The present invention provides methods for mineral precipitation of porous particulate starting materials using isolated urease.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: August 27, 2019
    Assignee: Arizona Board of Regents on behalf of Arizona State University
    Inventors: Edward Kavazanjian, Nasser Hamdan
  • HYDROGEL BIOCEMENT SYSTEMS AND METHODS
    Publication number: 20190256770
    Abstract: A soil stabilization method of forming an admixture of at least one hydrogel precursor and urease enzyme, and contacting at least a portion of the admixture with soil, and forming a hydrogel network in-situ within at least a portion of the soil, wherein at least a portion of the hydrogel network includes in-situ precipitated calcium carbonate. In some embodiments, at least a portion of the hydrogel network is formed in-situ by polymerizing the at least one hydrogel precursor in the presence of the urease enzyme.
    Type: Application
    Filed: February 13, 2017
    Publication date: August 22, 2019
    Applicant: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY
    Inventors: Ximin He, Edward Kavazanjian, Nasser Hamdan, Zhi Zhao
  • METHODS AND SYSTEMS FOR IN SITU TEMPORARY CONTAINMENT OF SHALLOW CONTAMINATED SOILS
    Publication number: 20180200765
    Abstract: A method for installing an in situ, low-permeability temporary horizontal barrier at depth for vertical containment of a soil mass including installing a low permeability vertical barrier having walls located to contain a predetermined soil volume, the vertical barrier having a horizontal surface area in a plane perpendicular to its walls; and injecting low permeability reagents capable of forming a temporary horizontal barrier in a pattern suitable for creating a horizontal subsurface barrier joined to all of the vertical barrier walls to form an in situ barrier.
    Type: Application
    Filed: July 18, 2016
    Publication date: July 19, 2018
    Applicant: Arizona Board of Regents on behalf of Arizona State University
    Inventors: Rolf U. Halden, Edward Kavazanjian, Alizee M. Jenck, Nasser Hamdan, Thomas Hoelen
  • Cementation Methods
    Publication number: 20180119185
    Abstract: The present invention provides methods for mineral precipitation and/or cementation of permeable or fractured non-porous materials using isolated urease.
    Type: Application
    Filed: November 3, 2017
    Publication date: May 3, 2018
    Applicant: Arizona Board of Regents on behalf of Arizona Stat e University
    Inventors: Edward Kavazanjian, Nasser Hamdan
  • Mineral Precipitation Methods
    Publication number: 20160244931
    Abstract: The present invention provides methods for mineral precipitation of porous particulate starting materials using isolated urease.
    Type: Application
    Filed: October 28, 2014
    Publication date: August 25, 2016
    Inventors: Edward KAVAZANJIAN, Nasser HAMDAN
  • Mineral Precipitation Methods
    Publication number: 20160236943
    Abstract: The present invention provides methods for mineral precipitation of porous particulate starting materials using isolated urease.
    Type: Application
    Filed: October 28, 2014
    Publication date: August 18, 2016
    Inventors: Edward KAVAZANJIAN, Nasser HAMDAN