Patents by Inventor Qinghao Chen
Qinghao 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).
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Publication number: 20230141925Abstract: A CT scanning method compensates gantry motion blurring in projection measurement based on synchronized focal spot movement and detector data shifting. Tube power is increased by moving the focal on the target and reducing focal spot dwell duration. The CT scanning method is used on helical CT and cone beam with a rotating anode source and CBCT and TBCT with a linear array x-ray source.Type: ApplicationFiled: November 8, 2022Publication date: May 11, 2023Inventors: Tiezhi Zhang, Qinghao Chen, Shuang Zhou, Yuewen Tan
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Patent number: 10308633Abstract: This invention provides novel processes for the preparation of compounds such as 3-[(1S,2S)-2-hydroxycyclohexyl]-6-[(6-methylpyridin-3-yl)methyl]benzo[h]-quinazolin-4(3H)-one, salts and derivatives thereof. The compounds synthesized by the processes of the invention are useful for treating Alzheimer's disease and other diseases (e.g., cognitive impairment, schizophrenia, pain disorders, and sleep disorders) mediated by the muscarinic M1 receptor.Type: GrantFiled: September 26, 2016Date of Patent: June 4, 2019Assignees: Merck Sharp & Dohme Corp., Merck Sharp & Dohme LimitedInventors: Qinghao Chen, Shane W. Krska, Lushi Tan, Peter E. Maligres, Jeremy Scott, Carl Baxter, Gavin William Stewart, Andrew Gibb
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Patent number: 10202401Abstract: The present invention is directed to a process for making Tetracyclic Heterocycle Compounds of Formula (I): and pharmaceutically acceptable salts thereof, wherein X1, X2, R1, R2 and R3 are defined above herein. The present invention is also directed to compounds that may be useful as synthetic intermediates in the process of the invention.Type: GrantFiled: November 9, 2017Date of Patent: February 12, 2019Assignees: MSD R&D CN CO., LTD, MERCK SHARP & DOHME CORP., MERCK SHARP & DOHME LIMITEDInventors: Hongming Li, Jingjun Yin, Kevin M. Belyk, Kevin R. Campos, Qinghao Chen, Alan M. Hyde, Tetsuji Itoh, Artis Klapars, Matthew Thomas Tudge, Edward Cleator, Aaron M. Dumas, Louis-Charles Campeau, Yonggang Chen, Ji Qi, Wensong Xiao
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Publication number: 20180265493Abstract: This invention provides novel processes for the preparation of compounds such as 3-[(1S,2S)-2-hydroxycyclohexyl]-6-[(6-methylpyridin-3-yl)methyl]benzo[h]-quinazolin-4(3H)-one, salts and derivatives thereof. The compounds synthesized by the processes of the invention are useful for treating Alzheimer's disease and other diseases (e.g., cognitive impairment, schizophrenia, pain disorders, and sleep disorders) mediated by the muscarinic M1 receptor.Type: ApplicationFiled: September 26, 2016Publication date: September 20, 2018Applicants: Merck Sharp & Dohme Corp., Merck Sharp & Dohme Limited.Inventors: Qinghao Chen, Shane W. Krska, Lushi Tan, Peter E. Maligres, Jeremy Scott, Carl Baxter, Gavin William Stewart, Andrew Gibb
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Patent number: 10053466Abstract: A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of: ?and reductive amination of:Type: GrantFiled: December 5, 2017Date of Patent: August 21, 2018Assignee: Merck Sharp & Dohme Corp.Inventors: John Y. L. Chung, Feng Peng, Yonggang Chen, Amude Mahmoud Kassim, Cheng-yi Chen, Mathew Maust, Mark McLaughlin, Michael J. Zacuto, Qinghao Chen, Lushi Tan, Zhiguo Jake Song, Yang Cao, Feng Xu
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Publication number: 20180093992Abstract: A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of: ?and reductive amination of:Type: ApplicationFiled: December 5, 2017Publication date: April 5, 2018Inventors: John Y. L. Chung, Feng Peng, Yonggang Chen, Amude Mahmoud Kassim, Cheng-yi Chen, Mathew Maust, Mark McLaughlin, Michael J. Zacuto, Qinghao Chen, Lushi Tan, Zhiguo Jake Song, Yang Cao, Feng Xu
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Publication number: 20180065985Abstract: The present invention is directed to a process for making Tetracyclic Heterocycle Compounds of Formula (I): and pharmaceutically acceptable salts thereof, wherein X1, X2, R1, R2 and R3 are defined above herein. The present invention is also directed to compounds that may be useful as synthetic intermediates in the process of the invention.Type: ApplicationFiled: November 9, 2017Publication date: March 8, 2018Applicants: Merck Sharpe & Dohme Corp., MSD R&D (China) Co., Ltd., Merck Sharp & Dohme LimitedInventors: Hongming Li, Jingjun Yin, Kevin M. Belyk, Kevin R. Campos, Qinghao Chen, Alan M. Hyde, Tetsuji Itoh, Artis Klapars, Matthew Thomas Tudge, Edward Cleator, Aaron M. Dumas, Louis-Charles Campeau, Yonggang Chen, Ji Qi, Wensong Xiao
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Patent number: 9862725Abstract: A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of, reductive amination of:Type: GrantFiled: July 16, 2015Date of Patent: January 9, 2018Assignee: Merck Sharp & Dohme Corp.Inventors: John Y. L. Chung, Feng Peng, Yonggang Chen, Amude Mahmoud Kassim, Cheng-yi Chen, Mathew Maust, Mark McLaughlin, Michael J. Zacuto, Qinghao Chen, Lushi Tan, Zhiguo Jake Song, Yang Cao, Feng Xu
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Publication number: 20170233382Abstract: This invention provides processes for the preparation of verubecestat (Compound of Formula (I)), a potent inhibitor of BACE-1 and BACE-2. In addition, the invention provides certain synthetic intermediates which are useful, among other things, for the preparation of the Compound of Formula (I).Type: ApplicationFiled: August 10, 2015Publication date: August 17, 2017Applicant: Merck Sharp & Dohme Corp.Inventors: Steven P. Miller, Carmela Molinaro, David Thaisrivongs, Feng Xu, Richard Desmond, Hongming Li, Qinghao Chen, Andrew W. Stamford, Zhiguo Jake Song, Lushi Tan
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Publication number: 20170166586Abstract: The present invention is directed to a process for making Tetracyclic Heterocycle Compounds of Formula (I) and pharmaceutically acceptable salts thereof, wherein X1, X2, R1, R2 and R3 are defined above herein. The present invention is also directed to compounds that are useful as synthetic intermediates in the process of the invention.Type: ApplicationFiled: July 10, 2015Publication date: June 15, 2017Inventors: Hongming Li, Jingjun Yin, Kevin M. Belyk, Kevin R. Campos, Qinghao Chen, Alan M. Hyde, Tetsuji Itoh, Artis Klapars, Matthew Thomas Tudge, Edward Cleator, Aaron M. Dumas, Louis-Charles Campeau, Yonggang Chen, Ji Qi, Wensong Xiao
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Publication number: 20170158701Abstract: A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of, reductive amination of:Type: ApplicationFiled: July 16, 2015Publication date: June 8, 2017Inventors: John Y. L. Chung, Feng Peng, Yonggang Chen, Amude Mahmoud Kassim, Cheng-yi Chen, Mathew Maust, Mark McLaughlin, Michael J. Zacuto, Qinghao Chen, Lushi Tan, Zhiguo Jake Song, Yang Cao, Feng Xu
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Patent number: 9527855Abstract: A process for the preparation of pyrazolopyrolidines of structural formula I: and W is or P, wherein in P is an amine protecting group. These compounds are useful in the synthesis of dipeptidyl peptidase-IV inhibitors for the treatment of Type 2 diabetes. Also provided are useful intermediates obtained from the process.Type: GrantFiled: October 2, 2015Date of Patent: December 27, 2016Assignees: Merck Sharp & Dohme Corp., Merck Sharp & Dohme Ltd.Inventors: Michael J. Zacuto, Robert F. Dunn, Aaron J. Moment, Jacob M. Janey, David Lieberman, Faye Sheen, Nadine Bremeyer, Jeremy Scott, Jeffrey T. Kuethe, Lushi Tan, Qinghao Chen
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Publication number: 20160024100Abstract: A process for the preparation of pyrazolopyrolidines of structural formula I: and W is or P, wherein in P is an amine protecting group. These compounds are useful in the synthesis of dipeptidyl peptidase-IV inhibitors for the treatment of Type 2 diabetes. Also provided are useful intermediates obtained from the process.Type: ApplicationFiled: October 2, 2015Publication date: January 28, 2016Inventors: Michael J. Zacuto, Robert F. Dunn, Aaron J. Moment, Jacob M. Janey, David Lieberman, Faye Sheen, Nadine Bremeyer, Jeremy Scott, Jeffrey T. Kuethe, Lushi Tan, Qinghao Chen
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Patent number: 9187488Abstract: A process for the preparation of pyrazolopyrolidines of structural formula I: and W is or P, wherein in P is an amine protecting group. These compounds are useful in the synthesis of dipeptidyl peptidase-IV inhibitors for the treatment of Type 2 diabetes. Also provided are useful intermediates obtained from the process.Type: GrantFiled: June 25, 2012Date of Patent: November 17, 2015Assignees: Merck Sharp & Dohme Corp, Merck Sharp & Dohme Ltd.Inventors: Michael J. Zacuto, Robert F. Dunn, Aaron J. Moment, Jacob M. Janey, David Lieberman, Faye Sheen, Nadine Bremeyer, Jeremy Scott, Jeffrey T. Kuethe, Lushi Tan, Qinghao Chen
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Patent number: 8588370Abstract: The present invention discloses an article inspection device, comprising: a x-ray machine, a collimation unit, a transmission detector array and at least one scattering detector array. Each of the at least one scattering detector array comprising a plurality of same scattering detector modules arranged in a matrix of i-rows and j-columns. A transmission cross section of the article transmitted by the x-rays is divided into a plurality of same sub-regions arranged in a matrix of i-rows and j-columns. The plurality of scattering detector modules arranged in i-rows and i-columns correspond to the plurality of sub-regions arranged in i-rows and j-columns one by one for detecting pair production effect annihilation photons and Compton-effect scattering photons from the respective sub-regions.Type: GrantFiled: December 29, 2010Date of Patent: November 19, 2013Assignees: Tsinghua University, Nuctech Company LimitedInventors: Yigang Yang, Tiezhu Li, Qinjian Zhang, Yi Zhang, Yingkang Jin, Qinghao Chen, Yuanjing Li, Yinong Liu
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Patent number: 8406375Abstract: The present invention discloses an article inspection device, comprising: an x-ray machine, a collimation unit, a transmission detector array and a scattering detector array. The scattering detector array comprising a plurality of same scattering detector modules arranged in a matrix of i-rows and j-columns. A transmission cross section of the article transmitted by the x-rays is divided into a plurality of same sub-regions arranged in a matrix of i-rows and j-columns. The plurality of scattering detector modules arranged in i-rows and j-columns correspond to the plurality of sub-regions arranged in i-rows and j-columns one by one for detecting pair production effect annihilation photons and Compton-effect scattering photons from the respective sub-regions. Obtaining atomic numbers of the respective sub-regions based on a ratio of the pair production effect annihilation photon count to the Compton-effect scattering photon count, so as to form a three-dimensional image of the article.Type: GrantFiled: December 28, 2010Date of Patent: March 26, 2013Assignees: Tsinghua University, Nuctech Company LimitedInventors: Yigang Yang, Tiezhu Li, Qinjiar Zhang, Yi Zhang, Yingkang Jin, Qinghao Chen, Yuanjing Li, Yinong Liu
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Publication number: 20120207271Abstract: The present invention discloses an article inspection device, comprising: an x-ray machine, a collimation unit, a transmission detector array and a scattering detector array. The scattering detector array comprising a plurality of same scattering detector modules arranged in a matrix of i-rows and j-columns. A transmission cross section of the article transmitted by the x-rays is divided into a plurality of same sub-regions arranged in a matrix of i-rows and j-columns. The plurality of scattering detector modules arranged in i-rows and j-columns correspond to the plurality of sub-regions arranged in i-rows and j-columns one by one for detecting pair production effect annihilation photons and Compton-effect scattering photons from the respective sub-regions. Obtaining atomic numbers of the respective sub-regions based on a ratio of the pair production effect annihilation photon count to the Compton-effect scattering photon count, so as to form a three-dimensional image of the article.Type: ApplicationFiled: December 28, 2010Publication date: August 16, 2012Inventors: Yigang Yang, Tiezhu Li, Qinjian Zhang, Yi Zhang, Yingkang Jin, Qinghao Chen, Yuanjing Li, Yinong Liu
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Publication number: 20120002788Abstract: The present invention discloses an article inspection device, comprising: a x-ray machine, a collimation unit, a transmission detector array and at least one scattering detector array. Each of the at least one scattering detector array comprising a plurality of same scattering detector modules arranged in a matrix of i-rows and j-columns. A transmission cross section of the article transmitted by the x-rays is divided into a plurality of same sub-regions arranged in a matrix of i-rows and j-columns. The plurality of scattering detector modules arranged in i-rows and i-columns correspond to the plurality of sub-regions arranged in i-rows and j-columns one by one for detecting pair production effect annihilation photons and Compton-effect scattering photons from the respective sub-regions.Type: ApplicationFiled: December 29, 2010Publication date: January 5, 2012Inventors: Yigang Yang, Tiezhu Li, Qinjian Zhang, Yi Zhang, Yingkang Jin, Qinghao Chen, Yuanjing Li, Yinong Liu
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Publication number: 20100228036Abstract: The invention encompasses a process for making 2-[1-phenyl-5-hydroxy-4alpha-methyl-hexahydrocyclopenta[f]indazol-5-yl]ethyl phenyl derivatives, which are glucocorticoid receptor ligands, useful for the treatment of inflammatory and immunological diseases.Type: ApplicationFiled: October 20, 2008Publication date: September 9, 2010Inventors: Qinghao Chen, Shinji Fujimori, Jacob M. Janey, John Limanto, Rafik Naccache, Andrew F. Nolting, Zhigou J. Song, Neil Strotman, Lushi Tan, Mark Weisel