Patents by Inventor Zecheng Chen

Zecheng Chen 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: 20230383324
    Abstract: The present invention relates to methods for purifying bacterial polysaccharides, in particular for removing impurities from cellular lysates of bacteria producing polysaccharides.
    Type: Application
    Filed: October 19, 2021
    Publication date: November 30, 2023
    Inventors: Elizabeth BARANYI, Wei CHEN, Zecheng CHEN, Justin Keith MORAN, Yonghui YUAN
  • Patent number: 11365263
    Abstract: The present invention is directed to novel bifunctional CTI-CTI and CBI-CTI dimers of the formula: F1-L1-T-L2-F2 where F1, L1, T, L2 and F2 are as defined herein, useful for the treatment for proliferative diseases, where the inventive dimers can function as stand-alone drugs, payloads in antibody-drug-conjugates (ADCs), and linker-payload compounds useful in connection with the production or administration of such ADCs; and to compositions including the aforementioned dimers, linker-payloads and ADCs, and methods for using these dimers, linker-payloads and ADCs, to treat pathological conditions including cancer.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: June 21, 2022
    Assignee: PFIZER INC.
    Inventors: Andreas Maderna, Chakrapani Subramanyam, Lawrence N. Tumey, Zecheng Chen, Jeffrey M. Casavant
  • Publication number: 20210061923
    Abstract: The present invention is directed to novel bifunctional CTI-CTI and CBI-CTI dimers of the formula: F1-L1-T-L2-F2 where F1, L1, T, L2 and F2 are as defined herein, useful for the treatment for proliferative diseases, where the inventive dimers can function as stand-alone drugs, payloads in antibody-drug-conjugates (ADCs), and linker-payload compounds useful in connection with the production or administration of such ADCs; and to compositions including the aforementioned dimers, linker-payloads and ADCs, and methods for using these dimers, linker-payloads and ADCs, to treat pathological conditions including cancer.
    Type: Application
    Filed: November 6, 2020
    Publication date: March 4, 2021
    Applicant: PFIZER INC.
    Inventors: Andreas MADERNA, Chakrapani SUBRAMANYAM, Lawrence N. TUMEY, Zecheng CHEN, Jeffrey M. CASAVANT
  • Patent number: 10870706
    Abstract: The present invention is directed to novel bifunctional CTI-CTI and CBI-CTI dimers of the formula: F1-L1-T-L2-F2 where F1, L1, T, L2 and F2 are as defined herein, useful for the treatment for proliferative diseases, where the inventive dimers can function as stand-alone drugs, payloads in antibody-drug-conjugates (ADCs), and linker-payload compounds useful in connection with the production or administration of such ADCs; and to compositions including the aforementioned dimers, linker-payloads and ADCs, and methods for using these dimers, linker-payloads and ADCs, to treat pathological conditions including cancer.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: December 22, 2020
    Assignee: PFIZER INC.
    Inventors: Andreas Maderna, Chakrapani Subramanyam, Lawrence N. Tumey, Zecheng Chen, Jeffrey M. Casavant
  • Patent number: 10391182
    Abstract: Cytotoxic dimers comprising CBI-based and/or CPI-based sub-units, antibody drug conjugates comprising such dimers, and to methods for using the same to treat cancer and other conditions.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: August 27, 2019
    Assignee: Pfizer Inc.
    Inventors: Andreas Maderna, Matthew David Doroski, Zecheng Chen, Hud Lawrence Risley, Jeffrey Michael Casavant, Christopher John O'Donnell, Alexander M. Porte, Chakrapani Subramanyam
  • Publication number: 20180339060
    Abstract: Cytotoxic dimers comprising CBI-based and/or CPI-based sub-units, antibody drug conjugates comprising such dimers, and to methods for using the same to treat cancer and other conditions.
    Type: Application
    Filed: August 2, 2018
    Publication date: November 29, 2018
    Applicant: PFIZER INC.
    Inventors: Andreas MADERNA, Matthew David DOROSKI, Zecheng CHEN, Hud Lawrence RISLEY, Jeffrey Michael CASAVANT, Christopher John O'DONNELL, Alexander M. PORTE, Chakrapani SUBRAMANYAM
  • Patent number: 10086085
    Abstract: Cytotoxic dimers comprising CBI-based and/or CPI-based sub-units, antibody drug conjugates comprising such dimers, and to methods for using the same to treat cancer and other conditions.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: October 2, 2018
    Assignee: Pfizer Inc.
    Inventors: Andreas Maderna, Matthew David Doroski, Zecheng Chen, Hud Lawrence Risley, Jeffrey Michael Casavant, Christopher John O'Donnell, Alexander M. Porte, Chakrapani Subramanyam
  • Patent number: 10022381
    Abstract: Compounds of formula I wherein: R1 is and R2, R4, and R6-9 are defined herein, and pharmaceutically acceptable salts and esters thereof. These compounds inhibit PI3 kinase and mTOR, and may be used to treat diseases mediated by PI3 kinase and mTOR, such as a variety of cancers. Methods for making and using the compounds of this invention are disclosed. Various compositions containing the compounds of this invention are also disclosed.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: July 17, 2018
    Assignee: Pfizer Inc.
    Inventors: Aranapakam Mudumbai Venkatesan, Zecheng Chen, Christoph Martin Dehnhardt, Osvaldo Dos Santos, Efren Guillermo Delos Santos, Arie Zask, Jeroen Cunera Verheijen, Joshua Aaron Kaplan, David James Richard, Semiramis Ayral-Kaloustian, Tarek Suhayl Mansour, Ariamala Gopalsamy, Kevin Joseph Curran, Mengxiao Shi
  • Publication number: 20170224696
    Abstract: Compounds of formula I wherein: R1 is and R2, R4, and R6-9 are defined herein, and pharmaceutically acceptable salts and esters thereof. These compounds inhibit PI3 kinase and mTOR, and may be used to treat diseases mediated by PI3 kinase and mTOR, such as a variety of cancers. Methods for making and using the compounds of this invention are disclosed. Various compositions containing the compounds of this invention are also disclosed.
    Type: Application
    Filed: October 30, 2015
    Publication date: August 10, 2017
    Inventors: Aranapakam Mudumbai VENKATESAN, Zecheng CHEN, Christoph Martin DEHNHARDT, Osvaldo DOS SANTOS, Efren Guillermo DELOS SANTOS, Arie ZASK, Jeroen Cunera VERHEIJEN, Joshua Aaron KAPLAN, David James RICHARD, Semiramis AYRAL-KALOUSTIAN, Tarek Suhayl MANSOUR, Ariamala GOPALSAMY, Kevin Joseph CURRAN, Mengxiao SHI
  • Publication number: 20170119778
    Abstract: Compounds of formula I wherein: R1 is and R2, R4, and R6-9 are defined herein, and pharmaceutically acceptable salts and esters thereof. These compounds inhibit PI3 kinase and mTOR, and may be used to treat diseases mediated by PI3 kinase and mTOR, such as a variety of cancers. Methods for making and using the compounds of this invention are disclosed. Various compositions containing the compounds of this invention are also disclosed.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 4, 2017
    Inventors: Aranapakam Mudumbai VENKATESAN, Zecheng CHEN, Christoph Martin DEHNHARDT, Osvaldo DOS SANTOS, Efren Guillermo DELOS SANTOS, Arie ZASK, Jeroen Cunera VERHEIJEN, Joshua Aaron KAPLAN, David James RICHARD, Semiramis AYRAL-KALOUSTIAN, Tarek Suhayl MANSOUR, Ariamala GOPALSAMY, Kevin Joseph CURRAN, Mengxiao SHI
  • Publication number: 20160271270
    Abstract: The present invention is directed to novel bifunctional CTI-CTI and CBI-CTI dimers of the formula: F1-L1-T-L2-F2 where F1, L1, T, L2 and F2 are as defined herein, useful for the treatment for proliferative diseases, where the inventive dimers can function as stand-alone drugs, payloads in antibody-drug-conjugates (ADCs), and linker-payload compounds useful in connection with the production or administration of such ADCs; and to compositions including the aforementioned dimers, linker-payloads and ADCs, and methods for using these dimers, linker-payloads and ADCs, to treat pathological conditions including cancer.
    Type: Application
    Filed: March 15, 2016
    Publication date: September 22, 2016
    Applicant: Pfizer Inc.
    Inventors: Andreas MADERNA, Chakrapani SUBRAMANYAM, Lawrence N. TUMEY, Zecheng CHEN, Jeffrey M. CASAVANT
  • Patent number: 9174963
    Abstract: Compounds of formula I wherein: R1 is and R2, R4, and R6-9 are defined herein, and pharmaceutically acceptable salts and esters thereof. These compounds inhibit PI3 kinase and mTOR, and may be used to treat diseases mediated by PI3 kinase and mTOR, such as a variety of cancers. Methods for making and using the compounds of this invention are disclosed. Various compositions containing the compounds of this invention are also disclosed.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: November 3, 2015
    Assignee: Pfizer Inc.
    Inventors: Aranapakam Mudumbai Venkatesan, Zecheng Chen, Christoph Martin Dehnhardt, Osvaldo Dos Santos, Efren Guillermo Delos Santos, Arie Zask, Jeroen Cunera Verheijen, Joshua Aaron Kaplan, David James Richard, Semiramis Aryl-Kaloustian, Tarek Suhayl Mansour, Ariamala Gopalsamy, Kevin Joseph Curran, Mengxiao Shi
  • Publication number: 20150209445
    Abstract: Cytotoxic dimers comprising CBI-based and/or CPI-based sub-units, antibody drug conjugates comprising such dimers, and to methods for using the same to treat cancer and other conditions.
    Type: Application
    Filed: January 26, 2015
    Publication date: July 30, 2015
    Inventors: Andreas MADERNA, Matthew David DOROSKI, Zecheng CHEN, Hud Lawrence RISLEY, Jeffrey Michael CASAVANT, Christopher John O'DONNELL, Alexander M. PORTE, Chakrapani SUBRAMANYAM
  • Publication number: 20150011752
    Abstract: Compounds of formula I wherein: R1 is and R2, R4, and R6-9 are defined herein, and pharmaceutically acceptable salts and esters thereof. These compounds inhibit PI3 kinase and mTOR, and may be used to treat diseases mediated by PI3 kinase and mTOR, such as a variety of cancers. Methods for making and using the compounds of this invention are disclosed. Various compositions containing the compounds of this invention are also disclosed.
    Type: Application
    Filed: September 4, 2014
    Publication date: January 8, 2015
    Inventors: Aranapakam Mudumbai VENKATESAN, Zecheng CHEN, Christoph Martin DEHNHARDT, Osvaldo DOS SANTOS, Efren Guillermo DELOS SANTOS, Arie ZASK, Jeroen Cunera VERHEIJEN, Joshua Aaron KAPLAN, David James RICHARD, Semiramis AYRAL-KALOUSTIAN, Tarek Suhayl MANSOUR, Ariamala GOPALSAMY, Kevin Joseph CURRAN, Mengxiao SHI
  • Patent number: 8859542
    Abstract: Compounds of formula I wherein: R1 is and R2, R4, and R6-9 are defined herein, and pharmaceutically acceptable salts and esters thereof. These compounds inhibit PI3 kinase and mTOR, and may be used to treat diseases mediated by PI3 kinase and mTOR, such as a variety of cancers. Methods for making and using the compounds of this invention are disclosed. Various compositions containing the compounds of this invention are also disclosed.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: October 14, 2014
    Assignee: Wyeth LLC
    Inventors: Aranapakam Mudumbai Venkatesan, Zecheng Chen, Christoph Martin Dehnhardt, Osvaldo Dos Santos, Efren Guillermo Delos Santos, Arie Zask, Jeroen Cunera Verheijen, Joshua Aaron Kaplan, David James Richard, Semiramis Ayral-Kaloustian, Tarek Suhayl Mansour, Ariamala Gopalsamy, Kevin Joseph Curran, Mengxiao Shi
  • Publication number: 20140248239
    Abstract: Compounds of formula I wherein: R1 is and R2, R4, and R6-9 are defined herein, and pharmaceutically acceptable salts and esters thereof. These compounds inhibit PI3 kinase and mTOR, and may be used to treat diseases mediated by PI3 kinase and mTOR, such as a variety of cancers. Methods for making and using the compounds of this invention are disclosed. Various compositions containing the compounds of this invention are also disclosed.
    Type: Application
    Filed: April 23, 2014
    Publication date: September 4, 2014
    Applicant: WYETH LLC
    Inventors: Aranapakam Mudumbai VENKATESAN, Zecheng CHEN, Christoph Martin DEHNHARDT, Osvaldo DOS SANTOS, Efren Guillermo DELOS SANTOS, Arie ZASK, Jeroen Cunera VERHEIJEN, Joshua Aaron KAPLAN, David James RICHARD, Semiramis AYRAL-KALOUSTIAN, Tarek Suhayl MANSOUR, Ariamala GOPALSAMY, Kevin Joseph CURRAN, Mengxiao SHI
  • Patent number: 8748421
    Abstract: Compounds of formula I wherein: R1 is and R2, R4, and R6-9 are defined herein, and pharmaceutically acceptable salts and esters thereof. These compounds inhibit PI3 kinase and mTOR, and may be used to treat diseases mediated by PI3 kinase and mTOR, such as a variety of cancers. Methods for making and using the compounds of this invention are disclosed. Various compositions containing the compounds of this invention are also disclosed.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: June 10, 2014
    Assignee: Wyeth LLC
    Inventors: Aranapakam Mudumbai Venkatesan, Zecheng Chen, Christoph Martin Dehnhardt, Osvaldo Dos Santos, Efren Guillermo Delos Santos, Arie Zask, Jeroen Cunera Verheijen, Joshua Aaron Kaplan, David James Richard, Semiramis Ayral-Kaloustian, Tarek Suhayl Mansour, Ariamala Gopalsamy, Kevin Joseph Curran, Mengxiao Shi
  • Publication number: 20130315865
    Abstract: Compounds of formula I wherein: R1 is and R2, R4, and R6-9 are defined herein, and pharmaceutically acceptable salts and esters thereof. These compounds inhibit PI3 kinase and mTOR, and may be used to treat diseases mediated by PI3 kinase and mTOR, such as a variety of cancers. Methods for making and using the compounds of this invention are disclosed. Various compositions containing the compounds of this invention are also disclosed.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 28, 2013
    Applicant: PFIZER INC.
    Inventors: Aranapakam Mudumbai VENKATESAN, Zecheng CHEN, Christoph Martin DEHNHARDT, Osvaldo DOS SANTOS, Efren Guillermo DELOS SANTOS, Arie ZASK, Jeroen Cunera VERHEIJEN, Joshua Aaron KAPLAN, David James RICHARD, Semiramis AYRAL-KALOUSTIAN, Tarek Suhayl MANSOUR, Ariamala GOPALSAMY, Kevin Joseph CURRAN, Mengxiao SHI
  • Patent number: 8575159
    Abstract: Compounds of formula I wherein: R1 is and R2, R4, and R6-9 are defined herein, and pharmaceutically acceptable salts and esters thereof. These compounds inhibit PI3 kinase and mTOR, and may be used to treat diseases mediated by PI3 kinase and mTOR, such as a variety of cancers. Methods for making and using the compounds of this invention are disclosed. Various compositions containing the compounds of this invention are also disclosed.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: November 5, 2013
    Assignee: Wyeth LLC
    Inventors: Aranapakam Mudumbai Venkatesan, Zecheng Chen, Christoph Martin Dehnhardt, Osvaldo Dos Santos, Efren Guillermo Delos Santos, Arie Zask, Jeroen Cunera Verheijen, Joshua Aaron Kaplan, David James Richard, Semiramis Ayral-Kaloustian, Tarek Suhayl Mansour, Ariamala Gopalsamy, Kevin Joseph Curran, Mengxiao Shi
  • Patent number: 8445486
    Abstract: Compounds of formula I wherein: R1 is and R2, R4, and R6-9 are defined herein, and pharmaceutically acceptable salts and esters thereof. These compounds inhibit PI3 kinase and mTOR, and may be used to treat diseases mediated by PI3 kinase and mTOR, such as a variety of cancers. Methods for making and using the compounds of this invention are disclosed. Various compositions containing the compounds of this invention are also disclosed.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: May 21, 2013
    Assignee: Wyeth LLC
    Inventors: Aranapakam Mudumbai Venkatesan, Zecheng Chen, Christoph Martin Dehnhardt, Osvaldo Dos Santos, Efren Guillermo Delos Santos, Arie Zask, Jeroen Cunera Verheijen, Joshua Aaron Kaplan, David James Richard, Semiramis Ayral-Kaloustian, Tarek Suhayl Mansour, Ariamala Gopalsamy, Kevin Joseph Curran, Mengxiao Shi