Patents by Inventor Lan Wei

Lan Wei 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).

  • Patent number: 12552767
    Abstract: The present invention is directed to 3-heteroaryl pyrrolidine and piperidine compounds which are agonists of orexin receptors. The present invention is also directed to uses of the compounds described herein in the potential treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such diseases in which orexin receptors are involved.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: February 17, 2026
    Assignee: Merck Sharp & Dohme LLC
    Inventors: Stephane L. Bogen, Ping Chen, Dane James Clausen, Xianhai Huang, Michael T. Rudd, Shawn P. Walsh, Lan Wei, Dexi Yang
  • Publication number: 20260032148
    Abstract: A computer-implemented method performed at a processing server includes receiving, from a client device, a request to connect to an application server. The method further includes identifying a targeted application server from a set of application servers. The method further includes mapping a private internet protocol (IP) address for the targeted application server to a virtual IP (VIP) address associated with one or more demultiplexers. The method further includes generating a token based on a current secret key, wherein the token includes an indication of whether the token was generated using a static secret key or a particular dynamic secret key. The method further includes transmitting the VIP address, the private IP address, and the token to the client device.
    Type: Application
    Filed: September 30, 2025
    Publication date: January 29, 2026
    Applicant: Roblox Corporation
    Inventors: Ravi I. SINGH, Lan WEI, David STAHL
  • Patent number: 12428397
    Abstract: The present invention provides a compound of Formula (I) and pharmaceutical compositions comprising one or more said compounds, and methods for using said compounds for treating or preventing thromboses, embolisms, hypercoagulability or fibrotic changes. The compounds are selective Factor XI activation inhibitors.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: September 30, 2025
    Assignee: Merck Sharp & Dohme LLC
    Inventors: Jacqueline D. Hicks, John S. Debenham, Amjad Ali, Ying-Duo Gao, Lan Wei, Dexi Yang, Rongze Kuang, Alan Hruza, Peter Nizner, Daniel A. Tatosian
  • Patent number: 12312332
    Abstract: The present invention is directed to heteroaryl pyrrolidine and piperidine compounds which are agonists of orexin receptors. The present invention is also directed to uses of the compounds described herein in the potential treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such diseases in which orexin receptors are involved.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: May 27, 2025
    Assignee: Merck Sharp & Dohme LLC
    Inventors: Stephane L. Bogen, Ping Chen, Dane James Clausen, Jinsong Hao, Dipannita Kalyani, Michael T. Rudd, Shawn P. Walsh, Lan Wei, Dexi Yang
  • Publication number: 20240396931
    Abstract: A processing application stored on a processing server receives a request to join an application server from a client device. The processing application identifies a targeted application server from a set of application servers, a private internet protocol (IP) address for the targeted application server, and a port number associated with the targeted application server. The processing application generates a token based at least in part on the private IP address for the targeted application server. The processing application maps the private IP address to a virtual IP (VIP) address. The processing application transmits the VIP address, the private IP address, the port number, and the token to the client device.
    Type: Application
    Filed: August 5, 2024
    Publication date: November 28, 2024
    Applicant: Roblox Corporation
    Inventors: Brian PANE, Ravi I. SINGH, Lan WEI, David STAHL
  • Patent number: 12081585
    Abstract: A processing application stored on a processing server receives a request to join an application server from a client device. The processing application identifies a targeted application server from a set of application servers, a private internet protocol (IP) address for the targeted application server, and a port number associated with the targeted application server. The processing application generates a token based at least in part on the private IP address for the targeted application server. The processing application maps the private IP address to a virtual IP (VIP) address. The processing application transmits the VIP address, the private IP address, the port number, and the token to the client device.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: September 3, 2024
    Assignee: Roblox Corporation
    Inventors: Brian Pane, Ravi I. Singh, Lan Wei, David Stahl
  • Patent number: 12040764
    Abstract: A hybrid compensation system is electrically connected between a power grid and a load. The hybrid compensation system includes an active filter, a passive filter and a control unit. The active filter generates an output current. The active filter includes a switching circuit, a DC bus capacitor and a filtering inductor. The control unit includes a voltage controller, a first reactive current detector, a harmonic current compensator, a current loop controller and a modulator. The voltage controller generates a first current given signal according to a bus voltage of the DC bus capacitor and a reference voltage. The first reactive current detector generates a second current given signal. The harmonic current compensator generates a third current given signal. The current loop controller generates a control signal. The modulator generates a driving signal according to the control signal.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: July 16, 2024
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Jianfei Zheng, Lan Wei, Binbin Dong, Jianping Ying
  • Publication number: 20240002359
    Abstract: The present invention is directed to 3-heteroaryl pyrrolidine and piperidine compounds which are agonists of orexin receptors. The present invention is also directed to uses of the compounds described herein in the potential treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such diseases in which orexin receptors are involved.
    Type: Application
    Filed: December 1, 2021
    Publication date: January 4, 2024
    Applicant: Merck Sharp & Dohme LLC
    Inventors: Stephane L. Bogen, Ping Chen, Dane James Claussen, Xianhai Huang, Michael T. Rudd, Shawn P. Walsh, Lan Wei, Dexi Yang
  • Publication number: 20230365533
    Abstract: The present invention is directed to bicyclo[4.1 0]heptane pyrrolidine compounds of formula (I) which are agonists of orexin receptors. The present invention is also directed to uses of the compounds described herein in the potential treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such diseases in which orexin receptors are involved.
    Type: Application
    Filed: August 16, 2021
    Publication date: November 16, 2023
    Applicant: Merck Sharp & Dohme LLC
    Inventors: Stephane L. Bogen, Dane James Clausen, Deodial Guy Guiadeen, Jinsong Hao, Shishi Lin, Michael T. Rudd, Lan Wei, Li Xiao, Dexi Yang
  • Publication number: 20230308475
    Abstract: A processing application stored on a processing server receives a request to join an application server from a client device. The processing application identifies a targeted application server from a set of application servers, a private internet protocol (IP) address for the targeted application server, and a port number associated with the targeted application server. The processing application generates a token based at least in part on the private IP address for the targeted application server. The processing application maps the private IP address to a virtual IP (VIP) address. The processing application transmits the VIP address, the private IP address, the port number, and the token to the client device.
    Type: Application
    Filed: March 25, 2022
    Publication date: September 28, 2023
    Applicant: Roblox Corporation
    Inventors: Brian PANE, Ravi I. SINGH, Lan WEI, David STAHL
  • Publication number: 20230238943
    Abstract: A hybrid compensation system is electrically connected between a power grid and a load. The hybrid compensation system includes an active filter, a passive filter and a control unit. The active filter generates an output current. The active filter includes a switching circuit, a DC bus capacitor and a filtering inductor. The control unit includes a voltage controller, a first reactive current detector, a harmonic current compensator, a current loop controller and a modulator. The voltage controller generates a first current given signal according to a bus voltage of the DC bus capacitor and a reference voltage. The first reactive current detector generates a second current given signal. The harmonic current compensator generates a third current given signal. The current loop controller generates a control signal. The modulator generates a driving signal according to the control signal.
    Type: Application
    Filed: November 30, 2022
    Publication date: July 27, 2023
    Inventors: Jianfei Zheng, Lan Wei, Binbin Dong, Jianping Ying
  • Patent number: 11680060
    Abstract: The present invention is directed to bicyclo[4.1.0]heptane pyrrolidine compounds which are agonists of orexin receptors. The present invention is also directed to uses of the compounds described herein in the potential treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such diseases in which orexin receptors are involved.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: June 20, 2023
    Assignee: Merck Sharp & Dohme LLC
    Inventors: Stephane L. Bogen, Dane James Clausen, Deodial Guy Guiadeen, Jinsong Hao, Shishi Lin, Michael T. Rudd, Lan Wei, Li Xiao, Dexi Yang
  • Publication number: 20230167085
    Abstract: The present invention provides a compound of Formula (I) and pharmaceutical compositions comprising one or more said compounds, and methods for using said compounds for treating or preventing thromboses, embolisms, hypercoagulability or fibrotic changes. The compounds are selective Factor XI activation inhibitors.
    Type: Application
    Filed: May 7, 2021
    Publication date: June 1, 2023
    Applicant: Merck Sharp & Dohme LLC
    Inventors: Jacqueline D. HICKS, John S. Debenham, Amjad Ali, Ying-Duo Gao, Lan Wei, Dexi Yang, Rongze Kuang, Alan Hruza, Peter Nizner, Daniel A. Tatosian
  • Publication number: 20230018413
    Abstract: The present invention is directed to heteroaryl pyrrolidine and piperidine compounds which are agonists of orexin receptors. The present invention is also directed to uses of the compounds described herein in the potential treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such diseases in which orexin receptors are involved.
    Type: Application
    Filed: August 3, 2020
    Publication date: January 19, 2023
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Stephane L. Bogen, Ping Chen, Dane James Clausen, Jinsong Hao, Dipannita Kalyani, Michael T. Rudd, Shawn P. Walsh, Lan Wei, Dexi Yang
  • Publication number: 20220235033
    Abstract: The present invention provides a compound of Formula (I) and pharmaceutical compositions comprising one or more said compounds, and methods for using said compounds for treating or preventing thromboses, embolisms, hypercoagulability or fibrotic changes. The compounds are selective Factor XI activation inhibitors.
    Type: Application
    Filed: May 26, 2020
    Publication date: July 28, 2022
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Jacqueline D. Hicks, John S. Debenham, Amjad Ali, Lan Wei, Tianying Jian, Dexi Yang, Anthony K. Ogawa, Wenlang Fu, Matthew Lombardo, Rongze Kuang, Meng Yang, Sung-Sau So, Kenneth Ellsworth, Peter Nizner, Daniel A. Tatosian, Robert R. Wilkening, Jun Wang
  • Publication number: 20220056017
    Abstract: The present invention is directed to bicyclo[4.1.0]heptane pyrrolidine compounds which are agonists of orexin receptors. The present invention is also directed to uses of the compounds described herein in the potential treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such diseases in which orexin receptors are involved.
    Type: Application
    Filed: August 16, 2021
    Publication date: February 24, 2022
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Stephane L. BOGEN, Dane James CLAUSEN, Deodial Guy GUIADEEN, Jinsong HAO, Shishi LIN, Michael T. RUDD, Lan WEI, Li XIAO, Dexi YANG
  • Patent number: 11245341
    Abstract: A control method of a multilevel converter includes: classifying power modules that start working, need to update an output state or stop working to form m power module groups; and controlling power modules in a same one of the power module groups to start working, update the output state or stop working at the same time, and sequentially controlling the m power module groups to start working, or update the output state or stop working, according to a preset time interval. The number of power modules in each power module group is less than or equal to a preset value, causing a change value of an output level of the each power module group to be less than or equal to a preset voltage value.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: February 8, 2022
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Jianping Ying, Wei Xie, Lan Wei, Jianfei Zheng, Bingjie Liu, Dingkun Shen, Zhiming Hu, Wei Xu, Yang Liu
  • Publication number: 20200280266
    Abstract: A control method of a multilevel converter includes: classifying power modules that start working, need to update an output state or stop working to form m power module groups; and controlling power modules in a same one of the power module groups to start working, update the output state or stop working at the same time, and sequentially controlling the m power module groups to start working, or update the output state or stop working, according to a preset time interval. The number of power modules in each power module group is less than or equal to a preset value, causing a change value of an output level of the each power module group to be less than or equal to a preset voltage value.
    Type: Application
    Filed: February 27, 2020
    Publication date: September 3, 2020
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Jianping YING, Wei XIE, Lan WEI, Jianfei ZHENG, Bingjie LIU, Dingkun SHEN, Zhiming HU, Wei XU, Yang LIU
  • Patent number: 10164515
    Abstract: A driving method for power semiconductor switches in an H-bridge circuit is provided. The method includes: calculating a start time and an end time of a zero level of an output voltage and determining a zero level section based on the start time and end time of the zero level; and driving an upper power semiconductor switch of a first bridge arm and an upper power semiconductor switch of a second bridge arm to be on simultaneously or driving a lower power semiconductor switch of the first bridge arm and a lower power semiconductor switch of the second bridge arm to be on simultaneously in the zero level section.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: December 25, 2018
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Wei Xu, Dingkun Shen, Jianfei Zheng, Jianping Ying, Zhiming Hu, Wei Tian, Wei Xie, Lan Wei
  • Patent number: 10075057
    Abstract: A hybrid topology power converter includes a three-level circuit module and a cascaded H-bridge circuit module. A control method includes the following steps. Firstly, a zero sequence component is injected into a total modulation wave, thereby generating a compensated total modulation wave. Then, a first voltage signal is generated according to the compensated total modulation wave. An H-bridge modulation wave is generated according to the compensated total modulation wave and the first voltage signal. A three-level driving signal is generated according to the first voltage signal, and an H-bridge driving signal is generated according to the H-bridge modulation wave. A duty cycle of at least one switch element of the three-level circuit module is adjusted according to the three-level driving signal. A duty cycle of at least one switch elements of the cascaded H-bridge circuit module is adjusted according to the H-bridge driving signal.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: September 11, 2018
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Dingkun Shen, Jianfei Zheng, Wei Xu, Jianping Ying, Lan Wei, Zhiming Hu