Patents by Inventor Guoqiang Wang

Guoqiang Wang 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).

  • Control plane failure recovery in a network
    Patent number: 7130926
    Abstract: Label information used by a downstream LSR is mirrored on an upstream LSR. In particular, a copy of the label information database in the downstream LSR from LDP sessions is stored on the upstream LSR. The label information database and corresponding mirror are synchronized. The mirror is employed to facilitate recovery from control plane failure through comparison of the label information database with the mirror. For example, the intersection of the label information database and the mirror may be calculated and employed as the updated label information database and mirror.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: October 31, 2006
    Assignee: Nortel Networks Limited
    Inventors: Jing Wu, Delfin Y. Montuno, Guoqiang Wang
  • 9A,11-2C-bicyclic 9a-azalide derivatives
    Publication number: 20060154881
    Abstract: The present invention discloses compounds of formulae I and II, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.
    Type: Application
    Filed: January 3, 2006
    Publication date: July 13, 2006
    Inventors: Yat Or, Ly Phan, Guoqiang Wang, Yanchun Wang, Yulin Peng
  • 6,11-4-Carbon bridged ketolides
    Patent number: 7049417
    Abstract: Novel 6,11-4-carbon bridged ketolides, pharmaceutically-acceptable compositions comprising a therapeutically effective amount of a compound of the invention in combination with a pharmaceutically-acceptable carrier are described. Also described are a method for treating bacterial infections by administering to an animal a pharmaceutical composition containing a therapeutically effective amount of a compound of the invention and processes for the preparation of such compounds.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: May 23, 2006
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yat Sun Or, Guoqiang Wang, Deqiang Niu, Ly Tam Phan
  • Processes for the preparation of 6-11 bicyclic erythromycin derivatives
    Patent number: 7022679
    Abstract: The present invention relates to processes and intermediates for the preparation of 6–11 bicyclic erythromycin derivatives.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: April 4, 2006
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Heejin Kim, Guoqiang Wang, Yat Sun Or, Zhe Wang
  • Novel bicyclic 9a-azalide derivatives
    Publication number: 20060069048
    Abstract: The present invention discloses compounds of formulae I and II, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.
    Type: Application
    Filed: September 27, 2005
    Publication date: March 30, 2006
    Inventors: Yat Or, Yao-Ling Qiu, Guoqiang Wang, Deqiang Niu, Ly Phan
  • Processes for the preparation of 6-11 bicyclic erythromycin derivatives
    Publication number: 20060058248
    Abstract: The present invention relates to processes and intermediates for the preparation of 6-11 bicyclic erythromycin derivatives.
    Type: Application
    Filed: October 25, 2005
    Publication date: March 16, 2006
    Inventors: Guoyou Xu, Datong Tang, Yonghua Gai, Heejin Kim, Guoqiang Wang, Ly Phan, Yat Or, Zhe Wang
  • 6-11 Bicyclic ketolide derivatives
    Publication number: 20050282758
    Abstract: The present invention discloses compounds of formula I, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.
    Type: Application
    Filed: June 16, 2005
    Publication date: December 22, 2005
    Inventors: Deqiang Niu, Guoqiang Wang, Yat Or, Ly Phan
  • 6-11 Bicyclic erythromycin derivatives
    Publication number: 20050187169
    Abstract: The present invention discloses compounds of formulaes I, II, III, or IV, or a racemate, enantiomer, regioisomer, salt, ester or prodrug thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.
    Type: Application
    Filed: January 5, 2005
    Publication date: August 25, 2005
    Applicant: Enanta Pharmaceuticals, Inc.
    Inventors: Nha Vo, Guoqiang Wang, Guoyou Xu, Ying Hou, Ying Sun, Ly Phan, Zhe Wang, Yat Or
  • 6-11 Bicyclic ketolide derivatives
    Publication number: 20050159370
    Abstract: The present invention discloses compounds of formula I, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.
    Type: Application
    Filed: January 25, 2005
    Publication date: July 21, 2005
    Applicant: Enanta Pharmaceuticals, Inc.
    Inventors: Yat Or, Guoqiang Wang, Ly Phan, Deqiang Niu, Nha Vo, Yao-Ling Qiu, Yanchun Wang, Marina Busuyek, Ying Hou, Yulin Peng, Heejin Kim, Tongzhu Liu, Jay Farmer, Guoyou Xu
  • 9a,11-3C-bicyclic 9a-azalide derivatives
    Publication number: 20050090460
    Abstract: The present invention discloses compounds of formula I, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.
    Type: Application
    Filed: September 21, 2004
    Publication date: April 28, 2005
    Applicant: Enanta Pharmaceuticals, Inc.
    Inventors: Guoqiang Wang, Yulin Peng, Yanchun Wang, Ly Phan, Yat Or
  • 6-11 bicyclic ketolide derivatives
    Patent number: 6878691
    Abstract: The present invention discloses compounds of formula I, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: April 12, 2005
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yat Sun Or, Guoqiang Wang, Ly Tam Phan, Deqiang Niu, Nha Huu Vo, Yao-Ling Qiu, Yanchun Wang, Marina Busuyek, Ying Hou, Yulin Peng, Heejin Kim, Tongzhu Liu, Jay Judson Farmer, Guoyou Xu
  • 6-11 Bicyclic ketolide derivatives
    Publication number: 20050037982
    Abstract: The present invention discloses compounds of formula I, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.
    Type: Application
    Filed: May 5, 2003
    Publication date: February 17, 2005
    Inventors: Yat Or, Guoqiang Wang, Ly Phan, Deqiang Niu, Nha Vo, Yao-Ling Qiu, Yanchun Wang, Marina Busuyek, Ying Hou, Yulin Peng, Heejin Kim, Tongzhu Liu, Jay Farmer, Guoyou Xu
  • 6,11-4C-bicyclic 9a-azalide derivatives
    Publication number: 20050014707
    Abstract: The present invention discloses compounds of formula I, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.
    Type: Application
    Filed: May 7, 2004
    Publication date: January 20, 2005
    Inventors: Guoqiang Wang, Yat Or, Ly Tam Phan
  • 6,11-4-Carbon bridged erythromycin derivatives
    Publication number: 20050009763
    Abstract: Novel 6, 11-4-carbon bridged erythromycin derivatives and pharmaceutically-acceptable compositions comprising a therapeutically effective amount of a compound of the invention in combination with a pharmaceutically-acceptable carrier are described. Also described are methods for treating bacterial infections by administering to an animal a pharmaceutical composition containing a therapeutically effective amount of a compound of the invention and processes for the preparation of such compounds.
    Type: Application
    Filed: May 7, 2004
    Publication date: January 13, 2005
    Inventors: Yat Or, Guoqiang Wang, Deqiang Niu, Ly Phan
  • 6,11-4-carbon bridged ketolides
    Patent number: 6841664
    Abstract: Novel 6,11-4-carbon bridged ketolides, pharmaceutically-acceptable compositions comprising a therapeutically effective amount of a compound of the invention in combination with a pharmaceutically-acceptable carrier are described. Also described are a method for treating bacterial infections by administering to an animal a pharmaceutical composition containing a therapeutically effective amount of a compound of the invention and processes for the preparation of such compounds.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: January 11, 2005
    Assignee: Enanra Pharmaceuticals, Inc.
    Inventors: Yat Sun Or, Guoqiang Wang, Deqiang Niu, Ly Tam Phan
  • 6,11-4-Carbon bridged ketolides
    Publication number: 20040266998
    Abstract: Novel 6,11-4-carbon bridged ketolides, pharmaceutically-acceptable compositions comprising a therapeutically effective amount of a compound of the invention in combination with a pharmaceutically-acceptable carrier are described. Also described are a method for treating bacterial infections by administering to an animal a pharmaceutical composition containing a therapeutically effective amount of a compound of the invention and processes for the preparation of such compounds.
    Type: Application
    Filed: May 7, 2004
    Publication date: December 30, 2004
    Inventors: Yat Sun Or, Guoqiang Wang, Deqiang Niu, Ly Tam Phan
  • Processes for the preparation of 6-11 bicyclic erythromycin derivatives
    Publication number: 20040171818
    Abstract: The present invention relates to processes and intermediates for the preparation of 6-11 bicyclic erythromycin derivatives.
    Type: Application
    Filed: January 14, 2004
    Publication date: September 2, 2004
    Inventors: Guoyou Xu, Datong Tang, Yonghua Gai, Heejin Kim, Guoqiang Wang, Ly Tam Phan, Yat Sun Or, Zhe Wang
  • 6,11-4C-bicyclic 9a-azalide derivatives
    Patent number: 6764998
    Abstract: The present invention discloses compounds of formula I, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: July 20, 2004
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Guoqiang Wang, Yat Sun Or, Ly Tam Phan
  • 6,11-4-carbon bridged erythromycin derivatives
    Patent number: 6753318
    Abstract: Novel 6,11-4-carbon bridged erythromycin derivatives and pharmaceutically-acceptable compositions comprising a therapeutically effective amount of a compound of the invention in combination with a pharmaceutically-acceptable carrier are described. Also described are methods for treating bacterial infections by administering to an animal a pharmaceutical composition containing a therapeutically effective amount of a compound of the invention and processes for the preparation of such compounds.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: June 22, 2004
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Yat Sun Or, Guoqiang Wang, Deqiang Niu, Ly Tam Phan
  • 6,11-Bicyclic erythromycin derivatives
    Publication number: 20040053861
    Abstract: The present invention discloses compounds of formula I, or pharmaceutically acceptable salts, esters, or prodrugs thereof: 1
    Type: Application
    Filed: May 13, 2003
    Publication date: March 18, 2004
    Inventors: Yat Sun Or, Guoqiang Wang, Ly Tam Phan, Deqiang Niu, Yao-Ling Qiu, Nha Huu Vo, Jay Judson Farmer, Ying Hou