Patents by Inventor Pramod Virupax Joshi

Pramod Virupax Joshi 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).

  • Publication number: 20230357191
    Abstract: Compounds of Formula (I): pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed. Also disclosed are solid state forms of Compound 1 and salts and solvates thereof.
    Type: Application
    Filed: August 4, 2022
    Publication date: November 9, 2023
    Inventors: Alexander Russell Abela, Timothy Alcacio, Corey Anderson, Paul Timothy Angell, Minson Baek, Jeremy J. Clemens, Thomas Cleveland, Lori Ann Ferris, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Anton V. Gulevich, Sara Sabina Hadida Ruah, Clara Kuang-Ju Hsia, Robert M. Hughes, Pramod Virupax Joshi, Ping Kang, Ali Keshavarz-Shokri, Haripada Khatuya, Paul John Krenitsky, Jason McCartney, Mark Thomas Miller, Prasuna Paraselli, Fabrice Jean Denis Pierre, Yi Shi, Muna Shrestha, David Andrew Siesel, Kathy Stavropoulos, Andreas P. Termin, Fredrick F. Van Goor, Johnny Uy, Timothy John Young, Jinglan Zhou
  • Publication number: 20230233560
    Abstract: The present invention features a compound of formula I: or a pharmaceutically acceptable salt thereof, where R1, R2, R3, W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof.
    Type: Application
    Filed: July 14, 2022
    Publication date: July 27, 2023
    Applicant: Vertex Pharmaceuticals Incorporated
    Inventors: Mark Thomas Miller, Corey Anderson, Vijayalaksmi Arumugam, Brian Richard Bear, Hayley Marie Binch, Jeremy J. Clemens, Thomas Cleveland, Erica Conroy, Timothy Richard Coon, Bryan A. Frieman, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Sara Sabina Hadida-Ruah, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Chun-Chieh Lin, Gulin Erdogan Marelius, Vito Melillo, Jason McCartney, Georgia McGaughey Nicholls, Fabrice Jean Denis Pierre, Alina Silina, Andreas P. Termin, Johnny Uy, Jinglan Zhou
  • Publication number: 20220306606
    Abstract: Compounds of Formula I: pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed.
    Type: Application
    Filed: October 20, 2021
    Publication date: September 29, 2022
    Inventors: Timothy Alcacio, Minson Baek, Peter Grootenhuis, Sara Sabina Hadida Ruah, Robert M. Hughes, Ali Keshavarz-Shokri, Rachel McAuley-Aoki, Jason McCartney, Mark Thomas Miller, Fredrick Van Goor, Beili Zhang, Corey Anderson, Thomas Cleveland, Bryan A. Frieman, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Vito Melillo, Fabrice Jean Denis Pierre, Andreas P. Termin, Johnny Uy, Jinglan Zhou, Alexander Russell Abela, Brett Bradley Busch, Prasuna Paraselli
  • Patent number: 11453655
    Abstract: Compounds of Formula (I): pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed. Also disclosed are solid state forms of Compound 1 and salts and solvates thereof.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: September 27, 2022
    Assignee: Vertex Pharmaceuticals Incorporated
    Inventors: Alexander Russell Abela, Timothy Alcacio, Corey Anderson, Paul Timothy Angell, Minson Baek, Jeremy J. Clemens, Thomas Cleveland, Lori Ann Ferris, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Anton V. Gulevich, Sara Sabina Hadida Ruah, Clara Kuang-Ju Hsia, Robert M. Hughes, Pramod Virupax Joshi, Ping Kang, Ali Keshavarz-Shokri, Haripada Khatuya, Paul John Krenitsky, Jason McCartney, Mark Thomas Miller, Prasuna Paraselli, Fabrice Jean Denis Pierre, Yi Shi, Muna Shrestha, David Andrew Siesel, Kathy Stavropoulos, Andreas P. Termin, Fredrick F. Van Goor, Johnny Uy, Timothy John Young, Jinglan Zhou
  • Patent number: 11426407
    Abstract: The present invention features a compound of formula I: or a pharmaceutically acceptable salt thereof, where R1, R2, R3, W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: August 30, 2022
    Assignee: Vertex Pharmaceuticals Incorporated
    Inventors: Mark Thomas Miller, Corey Anderson, Vijayalaksmi Arumugam, Brian Richard Bear, Hayley Marie Binch, Jeremy J. Clemens, Thomas Cleveland, Erica Conroy, Timothy Richard Coon, Bryan A. Frieman, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Sara Sabina Hadida-Ruah, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Chun-Chieh Lin, Gulin Erdogan Marelius, Vito Melillo, Jason McCartney, Georgia McGaughey Nicholls, Fabrice Jean Denis Pierre, Alina Silina, Andreas P. Termin, Johnny Uy, Jinglan Zhou
  • Patent number: 11186566
    Abstract: Compounds of Formula I: pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: November 30, 2021
    Assignee: Vertex Pharmaceuticals Incorporated
    Inventors: Timothy Alcacio, Minson Baek, Peter Grootenhuis, Sara Sabina Hadida Ruah, Robert M. Hughes, Ali Keshavarz-Shokri, Rachel McAuley-Aoki, Jason McCartney, Mark Thomas Miller, Fredrick Van Goor, Beili Zhang, Corey Anderson, Thomas Cleveland, Bryan A. Frieman, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Vito Melillo, Fabrice Jean Denis Pierre, Andreas P. Termin, Johnny Uy, Jinglan Zhou, Alexander Russell Abela, Brett Bradley Busch, Prasuna Paraselli
  • Publication number: 20210052584
    Abstract: The present invention features a compound of formula I: or a pharmaceutically acceptable salt thereof, where R1, R2, R3, W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof.
    Type: Application
    Filed: March 31, 2020
    Publication date: February 25, 2021
    Applicant: Vertex Pharmaceuticals Incorporated
    Inventors: Mark Thomas Miller, Corey Anderson, Vijayalaksmi Arumugam, Brian Richard Bear, Hayley Marie Binch, Jeremy J. Clemens, Thomas Cleveland, Erica Conroy, Timothy Richard Coon, Bryan A. Frieman, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Sara Sabina Hadida-Ruah, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Chun-Chieh Lin, Gulin Erdogan Marelius, Vito Melillo, Jason McCartney, Georgia McGaughey Nicholls, Fabrice Jean Denis Pierre, Alina Silina, Andreas P. Termin, Johnny Uy, Jinglan Zhou
  • Publication number: 20210047295
    Abstract: Compounds of Formula (I): pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed. Also disclosed are solid state forms of Compound 1 and salts and solvates thereof.
    Type: Application
    Filed: August 17, 2020
    Publication date: February 18, 2021
    Inventors: Alexander Russell Abela, Timothy Alcacio, Corey Anderson, Paul Timothy Angell, Minson Baek, Jeremy J. Clemens, Thomas Cleveland, Lori Ann Ferris, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Anton V. Gulevich, Sara Sabina Hadida Ruah, Clara Kuang-Ju Hsia, Robert M. Hughes, Pramod Virupax Joshi, Ping Kang, Ali Keshavarz-Shokri, Haripada Khatuya, Paul John Krenitsky, Jason McCartney, Mark Thomas Miller, Prasuna Paraselli, Fabrice Jean Denis Pierre, Yi Shi, Muna Shrestha, David Andrew Siesel, Kathy Stavropoulos, Andreas P. Termin, Fredrick F. Van Goor, Johnny Uy, Timothy John Young, Jinglan Zhou
  • Patent number: 10793547
    Abstract: Compounds of Formula (I): pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed. Also disclosed are solid state forms of Compound 1 and salts and solvates thereof.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: October 6, 2020
    Assignee: Vertex Pharmaceuticals Incorporated
    Inventors: Alexander Russell Abela, Timothy Alcacio, Corey Anderson, Paul Timothy Angell, Minson Baek, Jeremy J. Clemens, Thomas Cleveland, Lori Ann Ferris, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Anton V. Gulevich, Sara Sabina Hadida Ruah, Clara Kuang-Ju Hsia, Robert M. Hughes, Pramod Virupax Joshi, Ping Kang, Ali Keshavarz-Shokri, Haripada Khatuya, Paul John Krenitsky, Jason McCartney, Mark Thomas Miller, Prasuna Paraselli, Fabrice Jean Denis Pierre, Yi Shi, Muna Shrestha, David Andrew Siesel, Kathy Stavropoulos, Andreas P. Termin, Fredrick F. Van Goor, Johnny Uy, Timothy John Young, Jinglan Zhou
  • Publication number: 20200283405
    Abstract: Compounds of Formula I: pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed.
    Type: Application
    Filed: December 4, 2019
    Publication date: September 10, 2020
    Inventors: Timothy Alcacio, Minson Baek, Peter Grootenhuis, Sara Sabina Hadida Ruah, Robert M. Hughes, Ali Keshavarz-Shokri, Rachel McAuley-Aoki, Jason McCartney, Mark Thomas Miller, Fredrick Van Goor, Beili Zhang, Corey Anderson, Thomas Cleveland, Bryan A. Frieman, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Vito Melillo, Fabrice Jean Denis Pierre, Andreas P. Termin, Johnny Uy, Jinglan Zhou, Alexander Russell Abela, Brett Bradley Busch, Prasuna Paraselli
  • Patent number: 10758534
    Abstract: The present invention features a compound of formula I: or a pharmaceutically acceptable salt thereof, where R1, R2, R3, W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: September 1, 2020
    Assignee: Vertex Pharmaceuticals Incorporated
    Inventors: Mark Thomas Miller, Corey Anderson, Vijayalaksmi Arumugam, Brian Richard Bear, Hayley Marie Binch, Jeremy J. Clemens, Thomas Cleveland, Erica Conroy, Timothy Richard Coon, Bryan A. Frieman, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Sara Sabina Hadida-Ruah, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Chun-Chieh Lin, Gulin Erdogan Marelius, Vito Melillo, Jason McCartney, Georgia McGaughey Nicholls, Fabrice Jean Denis Pierre, Alina Silina, Andreas P. Termin, Johnny Uy, Jinglan Zhou
  • Patent number: 10570115
    Abstract: Compounds of Formula I: pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: February 25, 2020
    Assignee: Vertex Pharmaceuticals Incorporated
    Inventors: Timothy Alcacio, Minson Baek, Peter Grootenhuis, Sara Sabina Hadida Ruah, Robert M. Hughes, Ali Keshavarz-Shokri, Rachel McAuley-Aoki, Jason McCartney, Mark Thomas Miller, Fredrick Van Goor, Beili Zhang, Corey Anderson, Thomas Cleveland, Bryan A. Frieman, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Vito Melillo, Fabrice Jean Denis Pierre, Andreas P. Termin, Johnny Uy, Jinglan Zhou, Alexander Russell Abela, Brett Bradley Busch, Prasuna Paraselli, David Andrew Siesel
  • Publication number: 20190269683
    Abstract: The present invention features a compound of formula I: or a pharmaceutically acceptable salt thereof, where R1, R2, R3, W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof.
    Type: Application
    Filed: January 25, 2019
    Publication date: September 5, 2019
    Applicant: Vertex Pharmaceuticals Incorporated
    Inventors: Mark Thomas Miller, Corey Anderson, Vijayalaksmi Arumugam, Brian Richard Bear, Haley Marie Binch, Jeremy J. Clemens, Thomas Cleveland, Erica Conroy, Timothy Richard Coon, Bryan A. Frieman, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Sara Sabina Hadida-Ruah, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Chun-Chieh Lin, Gulin Erdogan Marelius, Vito Melillo, Jason McCartney, Georgia McGaughey Nicholls, Fabrice Jean Denis Pierre, Alina Silina, Andreas P. Termin, Johnny Uy, Jinglan Zhou
  • Patent number: 10258624
    Abstract: The present invention features a compound of formula I: or a pharmaceutically acceptable salt thereof, where R1, R2, R3, W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: April 16, 2019
    Assignee: Vertex Pharmaceuticals Incorporated
    Inventors: Mark Thomas Miller, Corey Anderson, Vijayalaksmi Arumugam, Brian Richard Bear, Hayley Marie Binch, Jeremy J. Clemens, Thomas Cleveland, Erica Conroy, Timothy Richard Coon, Bryan A. Frieman, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Sara Sabina Hadida-Ruah, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Chun-Chieh Lin, Gulin Erdogan Marelius, Vito Melillo, Jason McCartney, Georgia McGaughey Nicholls, Fabrice Jean Denis Pierre, Alina Silina, Andreas P. Termin, Johnny Uy, Jinglan Zhou
  • Publication number: 20180185364
    Abstract: The present invention features a compound of formula I: or a pharmaceutically acceptable salt thereof, where R1, R2, R3, W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof.
    Type: Application
    Filed: August 11, 2017
    Publication date: July 5, 2018
    Applicant: Vertex Pharmaceuticals Incorporated
    Inventors: Mark Thomas Miller, Corey Anderson, Vijayalaksmi Arumugam, Brian Richard Bear, Hayley Marie Binch, Jeremy J. Clemens, Thomas Cleveland, Erica Conroy, Timothy Richard Coon, Bryan A. Frieman, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Sara Sabina Hadida-Ruah, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Chun-Chieh Lin, Gulin Erdogan Marelius, Vito Melillo, Jason McCartney, Georgia McGaughey Nicholls, Fabrice Jean Denis Pierre, Alina Silina, Andreas P. Termin, Johnny Uy, Jinglan Zhou
  • Publication number: 20180162839
    Abstract: Compounds of Formula (I): pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed. Also disclosed are solid state forms of Compound 1 and salts and solvates thereof.
    Type: Application
    Filed: December 8, 2017
    Publication date: June 14, 2018
    Inventors: Alexander Russell Abela, Timothy Alcacio, Corey Anderson, Paul Timothy Angell, Minson Baek, Jeremy J. Clemens, Thomas Cleveland, Lori Ann Ferris, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Anton V. Gulevich, Sara Sabina Hadida Ruah, Clara Kuang-Ju Hsia, Robert M. Hughes, Pramod Virupax Joshi, Ping Kang, Ali Keshavarz-Shokri, Haripada Khatuya, Paul John Krenitsky, Jason McCartney, Mark Thomas Miller, Prasuna Paraselli, Fabrice Jean Denis Pierre, Yi Shi, Muna Shrestha, David Andrew Siesel, Kathy Stavropoulos, Andreas P. Termin, Fredrick F. Van Goor, Johnny Uy, Timothy John Young, Jinglan Zhou
  • Publication number: 20180093969
    Abstract: Compounds of Formula I: pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 5, 2018
    Inventors: Timothy Alcacio, Minson Baek, Peter Grootenhuis, Sara Sabina Hadida Ruah, Robert M. Hughes, Ali Keshavarz-Shokri, Rachel McAuley-Aoki, Jason McCartney, Mark Thomas Miller, Fredrick Van Goor, Beili Zhang, Corey Anderson, Thomas Cleveland, Bryan A. Frieman, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Vito Melillo, Fabrice Jean Denis Pierre, Andreas P. Termin, Johnny Uy, Jinglan Zhou, Alexander Russell Abela, Brett Bradley Busch, Prasuna Paraselli, David Andrew Siesel
  • Patent number: 9782408
    Abstract: The present invention features a compound of formula I: or a pharmaceutically acceptable salt thereof, where R1, R2, R3, W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: October 10, 2017
    Assignee: Vertex Pharmaceuticals Incorporated
    Inventors: Mark Thomas Miller, Corey Anderson, Vijayalaksmi Arumugam, Brian Richard Bear, Hayley Marie Binch, Jeremy J. Clemens, Thomas Cleveland, Erica Conroy, Timothy Richard Coon, Bryan A. Frieman, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Sara Sabina Hadida Ruah, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Chun-Chieh Lin, Gulin Erdogan Marelius, Vito Melillo, Jason McCartney, Georgia McGaughey Nicholls, Fabrice Jean Denis Pierre, Alina Silina, Andreas P. Termin, Johnny Uy, Jinglan Zhou
  • Publication number: 20170196862
    Abstract: The present invention features a compound of formula I: or a pharmaceutically acceptable salt thereof, where R1, R2, R3, W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof.
    Type: Application
    Filed: October 6, 2015
    Publication date: July 13, 2017
    Applicant: Vertex Pharmaceuticals Incorporated
    Inventors: Mark Thomas Miller, Corey Anderson, Vijayalaksmi Arumugam, Brian Richard Bear, Hayley Marie Binch, Jeremy J. Ciemens, Thomas Cleveland, Erica Conroy, Timothy Richard Coon, Bryan A. Frieman, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Sara Sabina Hadida-Ruah, Haripada Khatuya, Pramod Virupax Joshi, Paul John Krenitsky, Chun-Chieh Lin, Gulin Erdogan Marelius, Vito Melillo, Jason McCartney, Georgia McGaughey Nicholls, Fabrice Jean Denis Pierre, Alina Silina, Andreas P. Termin, Johnny Uy, Jinglan Zhou
  • Publication number: 20160095858
    Abstract: The present invention features a compound of formula I: or a pharmaceutically acceptable salt thereof, where R1, R2, R3, W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof.
    Type: Application
    Filed: October 6, 2015
    Publication date: April 7, 2016
    Applicant: VERTEX PHARMACEUTICALS INCORPORATED
    Inventors: Mark Thomas Miller, Corey Anderson, Vijayalaksmi Arumugam, Brian Richard Bear, Hayley Marie Binch, Jeremy J. Clemens, Thomas Cleveland, Erica Conroy, Timothy Richard Coon, Bryan A. Frieman, Peter Diederik Jan Grootenhuis, Raymond Stanley Gross, Sara Sabina Hadida-Ruah, Khatuya Haripada, Pramod Virupax Joshi, Paul John Krenitsky, Chun-Chieh Lin, Gulin Erdgogan Marelius, Vito Melillo, Jason McCartney, Georgia McGaughey Nicholls, Fabrice Jean Denis Pierre, Alina Silina, Andreas P. Termin, Johnny Uy, Jinglan Zhou