Patents by Inventor Alireza Esteghlalian

Alireza Esteghlalian 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: 10329549
    Abstract: The invention relates to polypeptides having glucanase, e.g., endoglucanase, mannanase, xylanase activity or a combination of these activities, and polynucleotides encoding them. In one aspect, the glucanase activity is an endoglucanase activity (e.g., endo-1,4-beta-D-glucan 4-glucano hydrolase activity) and comprises hydrolysis of 1,4-beta-D-glycosidic linkages in cellulose, cellulose derivatives (e.g., carboxy methyl cellulose and hydroxy ethyl cellulose) lichenin, beta-1,4 bonds in mixed beta-1,3 glucans, such as cereal beta-D-glucans or xyloglucans and other plant material containing cellulosic parts. In addition, methods of designing new enzymes and methods of use thereof are also provided. In alternative aspects, the new glucanases e.g., endoglucanases, mannanases, xylanases have increased activity and stability, including thermotolerance or thermostability, at increased or decreased pHs and temperatures.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: June 25, 2019
    Assignee: BP Corporation North America Inc.
    Inventors: Brian Steer, Shaun Healey, Alireza Esteghlalian, Stacy Marie Miles, Kenneth Barrett, Rene Quadt
  • Patent number: 9765319
    Abstract: The invention relates to xylanases and to polynucleotides encoding the xylanases. In addition, methods of designing new xylanases and methods of use thereof are also provided. The xylanases have increased activity and stability at increased pH and temperature.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 19, 2017
    Assignee: BP Corporation North America Inc.
    Inventors: Brian Steer, Walter Callen, Shaun Healey, Geoff Hazlewood, Di Wu, David Blum, Alireza Esteghlalian
  • Publication number: 20140295523
    Abstract: The invention relates to polypeptides having glucanase, e.g., endoglucanase, mannanase, xylanase activity or a combination of these activities, and polynucleotides encoding them. In one aspect, the glucanase activity is an endoglucanase activity (e.g., endo-1,4-beta-D-glucan 4-glucano hydrolase activity) and comprises hydrolysis of 1,4-beta-D-glycosidic linkages in cellulose, cellulose derivatives (e.g., carboxy methyl cellulose and hydroxy ethyl cellulose) lichenin, beta-1,4 bonds in mixed beta-1,3 glucans, such as cereal beta-D-glucans or xyloglucans and other plant material containing cellulosic parts. In addition, methods of designing new enzymes and methods of use thereof are also provided. In alternative aspects, the new glucanases e.g., endoglucanases, mannanases, xylanases have increased activity and stability, including thermotolerance or thermostability, at increased or decreased pHs and temperatures.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 2, 2014
    Applicant: BP Corporation North America Inc.
    Inventors: Brian Steer, Shaun Healey, Alireza Esteghlalian, Stacy Marie Miles, Kenneth Barrett, Rene Quadt
  • Patent number: 8728769
    Abstract: The invention relates to xylanases and to polynucleotides encoding the xylanases. In addition, methods of designing new xylanases and methods of use thereof are also provided. The xylanases have increased activity and stability at increased pH and temperature.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: May 20, 2014
    Assignee: BP Corporation North America Inc.
    Inventors: Brian Steer, Walter Callen, Shaun Healey, Geoff Hazlewood, Di Wu, David Blum, Alireza Esteghlalian
  • Publication number: 20130337507
    Abstract: The invention relates to xylanases and to polynucleotides encoding the xylanases. In addition, methods of designing new xylanases and methods of use thereof are also provided. The xylanases have increased activity and stability at increased pH and temperature.
    Type: Application
    Filed: March 15, 2013
    Publication date: December 19, 2013
    Applicants: Verenium Corporation, BP Corporation North America Inc.
    Inventors: Brian Steer, Walter Callen, Shaun Healey, Geoff Hazlewood, Di Wu, David Blum, Alireza Esteghlalian
  • Publication number: 20110117067
    Abstract: The invention relates to polypeptides having glucanase, e.g., endoglucanase, mannanase, xylanase activity or a combination of these activities, and polynucleotides encoding them. In one aspect, the glucanase activity is an endoglucanase activity (e.g., endo-1,4-beta-D-glucan 4-glucano hydrolase activity) and comprises hydrolysis of 1,4-beta-D-glycosidic linkages in cellulose, cellulose derivatives (e.g., carboxy methyl cellulose and hydroxy ethyl cellulose) lichenin, beta-1,4 bonds in mixed beta-1,3 glucans, such as cereal beta-D-glucans or xyloglucans and other plant material containing cellulosic parts. In addition, methods of designing new enzymes and methods of use thereof are also provided. In alternative aspects, the new glucanases e.g., endoglucanases, mannanases, xylanases have increased activity and stability, including thermotolerance or thermostability, at increased or decreased pHs and temperatures.
    Type: Application
    Filed: August 4, 2007
    Publication date: May 19, 2011
    Inventors: Alireza Esteghlalian, Kenneth Barrett, Shaun Healey, Stacy M. Miles, Rene Quadt
  • Publication number: 20090221051
    Abstract: The invention relates to xylanases and to polynucleotides encoding the xylanases. In addition, methods of designing new xylanases and methods of use thereof are also provided. The xylanases have increased activity and stability at increased pH and temperature.
    Type: Application
    Filed: May 7, 2009
    Publication date: September 3, 2009
    Inventors: Brian STEER, Walter Callen, Shaun Healey, Geoff Hazlewood, Di Wu, David Blum, Alireza Esteghlalian
  • Patent number: 7547534
    Abstract: The invention relates to xylanases and to polynucleotides encoding the xylanases. In addition, methods of designing new xylanases and methods of use thereof are also provided. The xylanases have increased activity and stability at increased pH and temperature.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: June 16, 2009
    Assignee: Verenium Corporation
    Inventors: Brian Steer, Walter Callen, Shaun Healey, Geoff Hazlewood, Di Wu, David Blum, Alireza Esteghlalian
  • Patent number: 7504120
    Abstract: The invention relates to xylanases and to polynucleotides encoding the xylanases. In addition, methods of designing new xylanases and methods of use thereof are also provided. The xylanases have increased activity and stability at increased pH and temperature.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: March 17, 2009
    Assignee: Verenium Corporation
    Inventors: Brian Steer, Walter Callen, Shaun Healey, Geoff Hazlewood, Di Wu, David Blum, Alireza Esteghlalian
  • Publication number: 20080248160
    Abstract: The invention relates to xylanases and to polynucleotides encoding the xylanases. In addition, methods of designing new xylanases and methods of use thereof are also provided. The xylanases have increased activity and stability at increased pH and temperature.
    Type: Application
    Filed: June 16, 2003
    Publication date: October 9, 2008
    Inventors: Brian Steer, Walter Callen, Shaun Healey, Geoff Hazlewood, Di Wu, David Blum, Alireza Esteghlalian
  • Publication number: 20060003433
    Abstract: The invention relates to xylanases and to polynucleotides encoding the xylanases. In addition, methods of designing new xylanases and methods of use thereof are also provided. The xylanases have increased activity and stability at increased pH and temperature.
    Type: Application
    Filed: June 16, 2003
    Publication date: January 5, 2006
    Inventors: Brian Steer, Walter Callen, Shaun Healey, Geoff Hazlewood, Di Wu, David Blum, Alireza Esteghlalian