Patents by Inventor Qun Fang

Qun Fang 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: 20080004328
    Abstract: This invention provides fused heterocycles having the formula: in which R1 is a member selected from the group consisting of H, substituted or unsubstituted arylalkyl and substituted or unsubstituted heteroarylalkyl. R2 is a member selected from the group consisting of H substituted or unsubstituted alkenyl, substituted or unsubstituted arylalkyl and substituted or unsubstituted heteroarylalkyl. R3is a member selected from the group consisting of H, C1-C6 substituted or unsubstituted alkyl, substituted or unsubstituted arylalkyl and substituted or unsubstituted heteroarylalkyl. R4 is a member selected from OH and O?X+, in which X+ is positive ion which is a member selected from organic positive ions and inorganic positive ions. Substituted or unsubstituted arylalkyl and substituted or unsubstituted heteroarylalkyl moieties have the formula: in which Ar is a member selected from the group consisting of substituted or unsubstituted aryl and substituted or unsubstituted heteroaryl.
    Type: Application
    Filed: August 3, 2007
    Publication date: January 3, 2008
    Applicant: SEPRACOR INC.
    Inventors: James Dorsey, Michele Heffernan, Qun Fang, Robert Foglesong, Seth Hopkins, Cyprian Ogbu, Mustapha Soukri, Kerry Spear
  • Publication number: 20070049590
    Abstract: The invention is directed to racemic and stereomerically pure compounds of Formula 3: and to pharmaceutical compositions comprising them, methods of their use, and methods of their preparation.
    Type: Application
    Filed: October 26, 2006
    Publication date: March 1, 2007
    Inventors: Thomas Jerussi, Qun Fang
  • Publication number: 20060216799
    Abstract: Treatment of CNS disorders with (1R,4S)-trans 4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-napthalenamine; and (1S,4R)-trans 4-(3,4-dichlorophenyl)- 1,2,3,4-tetrahydro-1-napthalenamine is disclosed. A process for preparing 4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-napthalenamine is also disclosed. The process includes the preparation of all four isomers of N-[4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydronaphthalen-1-yl]formamide, which are also useful.
    Type: Application
    Filed: May 3, 2006
    Publication date: September 28, 2006
    Applicant: SEPRACOR INC.
    Inventors: Thomas Jerussi, Qun Fang, Mark Currie
  • Publication number: 20060128993
    Abstract: Treatment of CNS disorders with (1R,4S)-trans 4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-napthalenamine; and (1S,4R)-trans 4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-napthalenamine is disclosed. A process for preparing 4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-napthalenamine is also disclosed. The process includes the preparation of all four isomers of N-[4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydronaphthalen-1-yl]formamide, which are also useful.
    Type: Application
    Filed: January 24, 2006
    Publication date: June 15, 2006
    Applicant: SEPRACOR INC.
    Inventors: Thomas Jerussi, Qun Fang, Mark Currie
  • Publication number: 20060014982
    Abstract: Treatment of CNS disorders with (1R,4S)-trans 4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-napthalenamine; and (1S,4R)-trans 4-(3,4-dichlorophenyl)- 1,2,3,4-tetrahydro-1-napthalenamine is disclosed. A process for preparing 4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-napthalenamine is also disclosed. The process includes the preparation of all four isomers of N-[4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydronaphthalen-1-yl]formamide, which are also useful.
    Type: Application
    Filed: September 7, 2005
    Publication date: January 19, 2006
    Applicant: SEPRACOR INC.
    Inventors: Thomas Jerussi, Qun Fang, Mark Currie
  • Patent number: 6936010
    Abstract: A method is delineated for detecting and locating coronary artery and heart disease comprising the steps of obtaining electrocardiograph (EKG) signals from a patient, modifying the EKG signals, and establishing a base value for use in evaluating modified EKG signals. The step of modifying includes the steps of amplifying the EKG signals, digitizing amplified EKG signals, mathematically modifying the amplified and digitized EKG signals to obtain 12 lead signals in the time domain, and converting the 12 lead signals into power spectrum signals in the frequency domain. The base value is obtained by taking a patient's resting heart rate in beats per minute, converting it to beats per second, and multiplying by a scaling quantity between approximately 3 and 7, inclusively. Then, a first area is calculated by integrating a selected one of the power spectrum signals from zero Hertz to the base value. Similarly, a second area results from integrating the selected power spectrum signal from the base value to infinity.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: August 30, 2005
    Inventors: Dan Qun Fang, Hai Xiang Liu
  • Publication number: 20040092834
    Abstract: A method is delineated for detecting and locating coronary artery and heart disease comprising the steps of obtaining electrocardiograph (EKG) signals from a patient, modifying the EKG signals, and establishing a base value for use in evaluating modified EKG signals. The step of modifying includes the steps of amplifying the EKG signals, digitizing amplified EKG signals, mathematically modifying the amplified and digitized EKG signals to obtain 12 lead signals in the time domain, and converting the 12 lead signals into power spectrum signals in the frequency domain. The base value is obtained by taking a patient's resting heart rate in beats per minute, converting it to beats per second, and multiplying by a scaling quantity between approximately 3 and 7, inclusively. Then, a first area is calculated by integrating a selected one of the power spectrum signals from zero Hertz to the base value. Similarly, a second area results from integrating the selected power spectrum signal from the base value to infinity.
    Type: Application
    Filed: August 28, 2003
    Publication date: May 13, 2004
    Inventors: Dan Qun Fang, Hai Xiang Liu
  • Patent number: 6638232
    Abstract: A method is delineated for detecting and locating coronary artery and heart disease comprising the steps of obtaining electrocardiograph (EKG) signals from a patient, modifying the EKG signals, and establishing a base value for use in evaluating modified EKG signals. The step of modifying includes the steps of amplifying the EKG signals, digitizing amplified EKG signals, mathematically modifying the amplified and digitized EKG signals to obtain 12 lead signals in the time domain, and converting the 12 lead signals into power spectrum signals in the frequency domain. The base value is obtained by taking a patient's resting heart rate in beats per minute, converting it to beats per second, and multiplying by a scaling quantity between approximately 3 and 7, inclusively. Then, a first area is calculated by integrating a selected one of the power spectrum signals from zero Hertz to the base value.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: October 28, 2003
    Inventors: Dan Qun Fang, Hai Xiang Liu
  • Publication number: 20020052341
    Abstract: Methods and compositions are disclosed which utilize metabolites of bupropion for treating disorders ameliorated by inhibition of neuronal monoamine reuptake. Such disorders include, but are not limited to, sexual dysfunction, affective disorders, cerebral function disorders, cigarette smoking, and incontinence. Methods of making optically pure bupropion metabolites are also disclosed.
    Type: Application
    Filed: November 16, 2001
    Publication date: May 2, 2002
    Applicant: SEPRACOR INC.
    Inventors: Kevin Qun Fang, Chrisantha Hugh Senanayake, Paul Grover