Patents by Inventor Rangarani Karnati

Rangarani Karnati 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).

  • SURFACE-MODIFIED NANOPARTICLE COMPOSITIONS AND RELATED APPLICATIONS IN SUBTERRANEAN HYDROCARBON RECOVERY
    Publication number: 20230037819
    Abstract: Disclosed are surface-modified nanoparticles and surfactants used in compositions and methods for enhancing hydro-carbon recovery from subterranean formations.
    Type: Application
    Filed: May 14, 2020
    Publication date: February 9, 2023
    Inventors: Duy T. Nguyen, William T. Duttlinger, JR., Rangarani Karnati, Zhengang Zong, Kai He, Linh Do
  • Nanocrystalline cellulose and polymer-grafted nanocrystalline cellulose as rheology modifying agents for magnesium oxide and lime slurries
    Patent number: 10570347
    Abstract: Rheology modifying agents and methods of modifying the rheology of a slurry are disclosed. Methods for the prevention of fouling and methods for monitoring the rheology of a slurry are also provided. The slurry can be a lime slurry or a magnesium oxide slurry, for example. The rheology modifying agent can be polymer-grafted nanocrystalline cellulose. The rheology modifying agent can optionally include other components, such as a chelating agent.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: February 25, 2020
    Assignee: ECOLAB USA INC.
    Inventors: Shayan Moghadam, Rangarani Karnati, Heinrich E. Bode, Jasbir S. Gill
  • REMOVAL AND PREVENTION OF BIOFILM BY NANOPARTICLE CHEMISTRIES
    Publication number: 20190382693
    Abstract: Methods and compositions for biofilm removal in industrial applications and systems with prevalent biofilm and/or slime are disclosed. Various industrial processing, such as food and beverage processing, mining pipelines, cooling towers, and energy services applications benefit from the biofilm removal disclosed herein. In particular, the methods and compositions employ alumina nanoparticles alone or in combination with conventional biocides to remove biofilm and/or slime.
    Type: Application
    Filed: June 14, 2019
    Publication date: December 19, 2019
    Inventors: Cruz St. Peter, Ramakrishnan Balasubramanian, Duy Nguyen, Rangarani Karnati
  • Use of nanocrystaline cellulose and polymer grafted nanocrystaline cellulose for increasing retention in papermaking process
    Patent number: 10132040
    Abstract: Methods and compositions for improving the characteristics of paper substrates are disclosed. The methods involve adding to a paper substrate an NCC-polymer. NCC-polymers have unique chemical properties which result in improvements in wet strength, dry strength and drainage retention properties of the paper substrates.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: November 20, 2018
    Assignee: ECOLAB USA INC.
    Inventors: David J. Castro, Rangarani Karnati, Shawnee M. Wilson, Weiguo Cheng, Mei Liu, Zhiyi Zhang
  • Matrix and layer compositions for protection of bioactives
    Patent number: 10010506
    Abstract: The invention relates to matrix and layer compositions comprising a first polymer. The matrix and layer compositions are useful in the delivery of bioactives. In particular, the matrices and layers may have advantageous properties including mechanical properties and protection of bioactives and may also provide for pH-dependent release of a bioactive.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: July 3, 2018
    Assignee: Novus International, Inc.
    Inventors: Houston Stephen Smith, Matthew J. Fischer, Graciela B. Arhancet, Rangarani Karnati, John A. Hume, Xiaojun Wang
  • MATRIX AND LAYER COMPOSITIONS FOR PROTECTION OF BIOACTIVES
    Publication number: 20170216208
    Abstract: The invention relates to matrix and layer compositions comprising a first polymer. The matrix and layer compositions are useful in the delivery of bioactives. In particular, the matrices and layers may have advantageous properties including mechanical properties and protection of bioactives and may also provide for pH-dependent release of a bioactive.
    Type: Application
    Filed: April 17, 2017
    Publication date: August 3, 2017
    Inventors: Houston Stephen Smith, Matthew J. Fischer, Graciela B. Arhancet, Rangarani Karnati, John A. Hume, Xiaojun Wang
  • Matrix and layer compositions for protection of bioactives
    Patent number: 9655863
    Abstract: The invention relates to matrix and layer compositions comprising a first polymer. The matrix and layer compositions are useful in the delivery of bioactives. In particular, the matrices and layers may have advantageous properties including mechanical properties and protection of bioactives and may also provide for pH-dependent release of a bioactive.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: May 23, 2017
    Assignee: Novus International, Inc.
    Inventors: Houston Stephen Smith, Matthew J. Fischer, Graciela B. Arhancet, Rangarani Karnati, John A. Hume, Xiaojun Wang
  • NANOCRYSTALLINE CELLULOSE AND POLYMER-GRAFTED NANOCRYSTALLINE CELLULOSE AS RHEOLOGY MODIFYING AGENTS FOR MAGNESIUM OXIDE AND LIME SLURRIES
    Publication number: 20170107434
    Abstract: Rheology modifying agents and methods of modifying the rheology of a slurry are disclosed. Methods for the prevention of fouling and methods for monitoring the rheology of a slurry are also provided. The slurry can be a lime slurry or a magnesium oxide slurry, for example. The rheology modifying agent can be polymer-grafted nanocrystalline cellulose. The rheology modifying agent can optionally include other components, such as a chelating agent.
    Type: Application
    Filed: October 14, 2016
    Publication date: April 20, 2017
    Applicant: ECOLAB USA INC.
    Inventors: Shayan Moghadam, Rangarani Karnati, Heinrich E. Bode
  • USE OF NANOCRYSTALINE CELLULOSE AND POLYMER GRAFTED NANOCRYSTALINE CELLULOSE FOR INCREASING RETENTION IN PAPERMAKING PROCESS
    Publication number: 20160312410
    Abstract: Methods and compositions for improving the characteristics of paper substrates are disclosed. The methods involve adding to a paper substrate an NCC-polymer. NCC-polymers have unique chemical properties which result in improvements in wet strength, dry strength and drainage retention properties of the paper substrates.
    Type: Application
    Filed: July 5, 2016
    Publication date: October 27, 2016
    Applicant: ECOLAB USA INC.
    Inventors: David J. Castro, Rangarani Karnati, Shawnee M. Wilson, Weiguo Cheng, Mei Liu, Zhiyi Zhang
  • Matrix and layer compositions for protection of bioactives
    Patent number: 9452143
    Abstract: The invention relates to matrix and layer compositions comprising a first polymer. The matrix and layer compositions are useful in the delivery of bioactives. In particular, the matrices and layers may have advantageous properties including mechanical properties and protection of bioactives and may also provide for pH-dependent release of a bioactive.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: September 27, 2016
    Assignee: NOVUS INTERNATIONAL, INC.
    Inventors: Houston Stephen Smith, Matthew J. Fischer, Graciela B. Arhancet, Rangarani Karnati, John A. Hume, Xiaojun Wang
  • Functionalized polymer compositions
    Patent number: 9447068
    Abstract: The invention relates to functionalized polymers including homopolymers and copolymers and their uses in industrial applications and in agricultural applications. In particular, the homopolymers and copolymers may be, for example, used in polymer blends, used as nutritives and in feed compositions, and used in combination with a pharmaceutical or nutritive.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: September 20, 2016
    Assignee: NOVUS INTERNATIONAL, INC.
    Inventors: Graciela B. Arhancet, Matthew Mahoney, Xiaojun Wang, Rangarani Karnati
  • MATRIX AND LAYER COMPOSITIONS FOR PROTECTION OF BIOACTIVES
    Publication number: 20160228391
    Abstract: The invention relates to matrix and layer compositions comprising a first polymer. The matrix and layer compositions are useful in the delivery of bioactives. In particular, the matrices and layers may have advantageous properties including mechanical properties and protection of bioactives and may also provide for pH-dependent release of a bioactive.
    Type: Application
    Filed: April 20, 2016
    Publication date: August 11, 2016
    Inventors: Houston Stephen Smith, Matthew J. Fischer, Graciela B. Arhancet, Rangarani Karnati, John A. Hume, Xiaojun Wang
  • Use of nanocrystaline cellulose and polymer grafted nanocrystaline cellulose for increasing retention in papermaking process
    Patent number: 9410288
    Abstract: The invention provides methods and compositions for improving the characteristics of paper substrates. The method involves adding to a paper substrate an NCC-polymer. NCC-polymers have unique chemical properties which result in improvements in wet strength, dry strength and drainage retention properties of the paper substrates.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: August 9, 2016
    Assignee: ECOLAB USA INC.
    Inventors: David A. Castro, Rangarani Karnati, Shawnee M. Wilson, Weiguo Cheng, Mei Liu, Zhiyi Zhang
  • Functionalized polymer compositions
    Patent number: 9410036
    Abstract: The invention relates to functionalized polymers including homopolymers and copolymers and their uses in industrial applications and in agricultural applications. In particular, the homopolymers and copolymers may be, for example, used in polymer blends, used as nutritives and in feed compositions, and used in combination with a pharmaceutical or nutritive.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: August 9, 2016
    Assignee: Novus International, Inc.
    Inventors: Graciela B. Arhancet, Matthew Mahoney, Xiaojun Wang, Rangarani Karnati
  • FUNCTIONALIZED POLYMER COMPOSITIONS
    Publication number: 20160185899
    Abstract: The invention relates to functionalized polymers including homopolymers and copolymers and their uses in industrial applications and in agricultural applications. In particular, the homopolymers and copolymers may be, for example, used in polymer blends, used as nutritives and in feed compositions, and used in combination with a pharmaceutical or nutritive.
    Type: Application
    Filed: February 19, 2016
    Publication date: June 30, 2016
    Inventors: Graciela B. Arhancet, Matthew Mahoney, Xiaojun Wang, Rangarani Karnati
  • Use of nanocrystaline cellulose and polymer grafted nanocrystaline cellulose for increasing retention in papermaking process
    Patent number: 9303360
    Abstract: The invention provides methods and compositions for improving the characteristics of paper substrates. The method involves adding to a paper substrate an NCC-polymer. NCC polymers have unique chemical properties which result in improvements in wet strength, dry strength and drainage retention properties of the paper substrates.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: April 5, 2016
    Assignee: ECOLAB USA Inc.
    Inventors: David A. Castro, Rangarani Karnati, Shawnee M. Wilson, Weiguo Cheng, Mei Liu, Zhiyi Zhang
  • Functionalized polymer compositions
    Patent number: 9284294
    Abstract: The invention relates to functionalized polymers including homopolymers and copolymers and their uses in industrial applications and in agricultural applications. In particular, the homopolymers and copolymers may be, for example, used in polymer blends, used as nutritives and in feed compositions, and used in combination with a pharmaceutical or nutritive.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: March 15, 2016
    Assignee: Novus International, Inc.
    Inventors: Graciela B. Arhancet, Matthew Mahoney, Xiaojun Wang, Rangarani Karnati
  • FUNCTIONALIZED POLYMER COMPOSITIONS
    Publication number: 20160060454
    Abstract: The invention relates to functionalized polymers including homopolymers and copolymers and their uses in industrial applications and in agricultural applications. In particular, the homopolymers and copolymers may be, for example, used in polymer blends, used as nutritives and in feed compositions, and used in combination with a pharmaceutical or nutritive.
    Type: Application
    Filed: November 10, 2015
    Publication date: March 3, 2016
    Inventors: Graciela B. Arhancet, Matthew Mahoney, Xiaojun Wang, Rangarani Karnati
  • MATRIX AND LAYER COMPOSITIONS FOR PROTECTION OF BIOACTIVES
    Publication number: 20150157577
    Abstract: The invention relates to matrix and layer compositions comprising a first polymer. The matrix and layer compositions are useful in the delivery of bioactives. In particular, the matrices and layers may have advantageous properties including mechanical properties and protection of bioactives and may also provide for pH-dependent release of a bioactive.
    Type: Application
    Filed: July 11, 2013
    Publication date: June 11, 2015
    Inventors: Houston Stephen Smith, Matthew J. Fischer, Graciela B. Arhancet, Rangarani Karnati, John A. Hume, Xiaojun Wang
  • Use of nanocrystaline cellulose and polymer grafted nanocrystaline cellulose for increasing retention, wet strength, and dry strength in papermaking process
    Patent number: 9034145
    Abstract: The invention provides methods and compositions for improving the characteristics of paper substrates. The method involves adding to a paper substrate an NCC-polymer. NCC-polymers have unique chemical properties which result in improvements in wet strength, dry strength and drainage retention properties of the paper substrates.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: May 19, 2015
    Assignee: Ecolab USA Inc.
    Inventors: David J. Castro, Rangarani Karnati, Shawnee M. Wilson, Weiguo Cheng, Mei Liu, Zhiyi Zhang