Patents by Inventor Yihua Zhang

Yihua Zhang 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: 20220204867
    Abstract: Described herein are processes for hydroisomerising an unconventional feedstock using a hydroisomerisation catalyst comprising zeolite SSZ-91, zeolite SSZ-32, or zeolite SSZ-32x to provide a diesel fuel.
    Type: Application
    Filed: December 30, 2020
    Publication date: June 30, 2022
    Inventors: Kamala R. KRISHNA, Yihua ZHANG, GUAN-DAO LEI, Adeola Florence OJO
  • Publication number: 20220204875
    Abstract: A process for preparing a base oil from a waxy hydrocarbon feedstock is provided. The process comprises passing the hydrocarbon feedstock to a distillation column prior to dewaxing in order to recover a heavy wax cut. The heavy wax is then hydrocracked to lower boiling compounds which can be better isomerized to a base oil with an acceptable cloud point. The base oil yield is also increased.
    Type: Application
    Filed: December 30, 2020
    Publication date: June 30, 2022
    Applicant: Chevron U.S.A. Inc.
    Inventors: Jay Parekh, Jifei Jia, Guan-Dao Lei, Kenny Peinado, Yihua Zhang, Shanying Lee
  • Patent number: 11375047
    Abstract: A method of data transmission includes: receiving a first packet, where the first packet includes first compressed data and a first check value, the first compressed data is obtained by compressing first data based on a first compression mode, the first check value is obtained by processing a second check value based on a first check algorithm, the second check value is obtained by processing the first compressed data based on a second check algorithm; obtaining a first check code by processing the first packet based on a third check algorithm; determining, according to a correspondence between the first check code and the first compression mode, that the first compression mode is a compression mode used when the first data is compressed; and obtaining the first data by decompressing, based on a first decompression mode corresponding to the first compression mode, the first compressed data included in the first packet.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: June 28, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wei Chen, Yihua Zhang, Yongjun Tu, Xin Luo, Kai Qi
  • Publication number: 20220162508
    Abstract: An improved hydroisomerization catalyst and process for making a base oil product using a catalyst comprising SSZ-91 molecular sieve and ZSM-12 molecular sieve. The catalyst and process generally involves the use of a catalyst comprising an SSZ-91 molecular sieve combined with a ZSM-12 molecular sieve to produce dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst and process provide improved base oil cold properties, such as pour point and cloud point, along with other beneficial base oil properties.
    Type: Application
    Filed: November 26, 2020
    Publication date: May 26, 2022
    Inventors: Yihua ZHANG, Adeola Florence OJO, Guan-Dao LEI
  • Publication number: 20220143587
    Abstract: An improved hydroisomerization catalyst and process for making a base oil product wherein the catalyst comprises a base extrudate that includes SSZ-91 molecular sieve and a high nanopore volume alumina. The catalyst and process generally involves the use of a SSZ-91/high nanopore volume alumina based catalyst to produce dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst base extrudate advantageously comprises an alumina having a pore volume in the 11-20 nm pore diameter range of 0.05 to 1.0 cc/g, with the base extrudate formed from SSZ-91 and the alumina having a total pore volume in the 2-50 nm pore diameter range of 0.12 to 1.80 cc/g. The catalyst and process provide improved base oil yield with reduced gas and fuels production.
    Type: Application
    Filed: November 11, 2020
    Publication date: May 12, 2022
    Inventors: Yihua ZHANG, Adeola Florence OJO, Guan-Dao LEI
  • Publication number: 20220143588
    Abstract: An improved hydroisomerization catalyst system and process for making a base oil product using a combined catalyst system comprising SSZ-91 molecular sieve and SSZ-95 molecular sieve. The catalyst system and process generally involves the use of a catalyst comprising an SSZ-91 molecular sieve and a separate catalyst comprising an SSZ-95 molecular sieve to produce dewaxed base oil products by sequentially contacting the catalysts with a hydrocarbon feedstock. The catalyst system and process provide improved base oil yield along with other beneficial base oil properties.
    Type: Application
    Filed: November 11, 2020
    Publication date: May 12, 2022
    Inventors: Yihua ZHANG, Guan-Dao LEI
  • Patent number: 11302405
    Abstract: A nonvolatile (NV) memory device includes an NV storage media and a storage controller to control access to the NV storage media. In response to a host read request, the storage controller can determine if the NV storage media is in a stable Vt (threshold voltage) state. If the NV storage media is in a stable Vt state, the storage controller can perform a reset read operation prior to servicing the host read request. A reset read is a read operation that does not produce data to send back to the host. The reset read operation is a dummy read that puts the NV storage media into a transient Vt state, which has lower risk of read disturb.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: April 12, 2022
    Assignee: Intel Corporation
    Inventors: Sriram Natarajan, Shankar Natarajan, Yihua Zhang, Hinesh K. Shah, Rohit S. Shenoy, Arun Sitaram Athreya
  • Patent number: 11237732
    Abstract: Write performance of a block-based multi-level cell non-volatile memory is increased through the use of an internal copy of blocks with a high validity. Write (program) performance for sequential workloads is increased by moving the data in blocks with a high validity within a NAND device directly from the portion of the NAND device configured as single level cell NAND to the portion of the NAND device configured as multi-level cell NAND.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: February 1, 2022
    Assignee: Intel Corporation
    Inventors: Shankar Natarajan, Suresh Nagarajan, Yihua Zhang
  • Publication number: 20220024848
    Abstract: The present disclosure discloses salts formed by 2-(1-acyloxy-n-pentyl)benzoic acid and basic amino acid or aminoguanidine, a preparation method thereof, pharmaceutical preparations containing these salts, and application thereof in preparation of drugs for preventing or treating ischemic cardiovascular and cerebrovascular diseases, resisting thrombosis and improving cardio-cerebral circulation disorders. The compound of the present disclosure has excellent water solubility, aqueous solution stability and pharmacokinetic properties, also has significant anti-platelet aggregation, anti-thrombosis, anti-cerebral ischemia and neuroprotective activity.
    Type: Application
    Filed: December 3, 2018
    Publication date: January 27, 2022
    Inventors: Yihua ZHANG, Zhangjian HUANG, Jianbing WU, Jiayi ZHU
  • Patent number: 11229903
    Abstract: A method for making a hydroisomerization catalyst having improved thermal stability and metal dispersion characteristics, the catalyst prepared therefrom, and a process for making a base oil product using the catalyst are disclosed. The catalyst is prepared from a composition comprising an SSZ-91 molecular sieve and a rare earth modified alumina, with the composition being modified to contain a Group 8-10 metal, typically through impregnation of a Group 8-10 metal composition. The catalyst may be used to produce dewaxed base oil products by contacting the catalyst under hydroisomerization conditions with a hydrocarbon feedstock.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: January 25, 2022
    Assignee: Chevorn U.S.A. Inc.
    Inventors: Yihua Zhang, Adeola Florence Ojo, Guan-Dao Lei
  • Patent number: 11119672
    Abstract: An embodiment of a memory controller device includes technology to control access to a memory array which includes a single-level cell region and a multi-level cell region, determine an amount of valid data in a dynamic portion of the single-level cell region at runtime, and adjust a size of the dynamic portion of the single-level cell region at runtime based on the determined amount of valid data in the dynamic portion of the single-level cell region. Other embodiments are disclosed and claimed.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: September 14, 2021
    Assignee: Intel Corporation
    Inventors: Shankar Natarajan, Suresh Nagarajan, Shivashekar Muralishankar, Sriram Natarajan, Yihua Zhang
  • Publication number: 20210269319
    Abstract: A family of new crystalline molecular sieves designated SSZ-91 is disclosed, as are methods for making SSZ-91 and uses for SSZ-91. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure.
    Type: Application
    Filed: May 11, 2021
    Publication date: September 2, 2021
    Inventors: Adeola Florence OJO, Dan XIE, Yihua ZHANG, Guan-Dao LEI
  • Publication number: 20210151098
    Abstract: Programming a multilevel cell (MLC) nonvolatile (NV) media can be performed with internal buffer reuse to reduce the need for external buffering. The internal buffer is on the same die as the NV media to be programmed, along with a volatile memory to store data to program. The internal buffer is to read and program data for the NV media. Programming of the NV media includes staging first partial pages in the buffer for program, reading second partial pages from the NV media to the volatile memory, storing second partial pages in the buffer, and programming the NV media with the first partial pages and the second partial pages.
    Type: Application
    Filed: December 23, 2020
    Publication date: May 20, 2021
    Inventors: Shankar NATARAJAN, Suresh NAGARAJAN, Aliasgar S. MADRASWALA, Yihua ZHANG
  • Patent number: 11001502
    Abstract: A family of new crystalline molecular sieves designated SSZ-91 is disclosed, as are methods for making SSZ-91 and uses for SSZ-91. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: May 11, 2021
    Assignee: Chevron U.S.A. Inc.
    Inventors: Adeola Florence Ojo, Dan Xie, Yihua Zhang, Guan-Dao Lei
  • Patent number: 10956334
    Abstract: Subject matter disclosed herein relates to techniques to read memory in a continuous fashion.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: March 23, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Yihua Zhang, Jun Shen
  • Patent number: 10949300
    Abstract: Methods, systems, and devices for operating a memory cell or cells are described. An error in stored data may be detected by an error correction code (ECC) operation during sensing of the memory cells used to store the data. The error may be indicated in hardware by generating a measurable signal on an output node. For example, the voltage at the output node may be changed from a first value to a second value. A device monitoring the output node may determine an error has occurred for a set of data based at least in part on the change in the signal at the output node.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: March 16, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Yihua Zhang, Paolo E. Mangalindan, Jianfei Lei, Andrew D. Proescholdt, Gerard A. Kreifels
  • Patent number: 10913054
    Abstract: A hydrocracking catalyst comprising a zeolite beta having an average domain size from 800 to 1500 nm2; a zeolite USY; a catalyst support; and at least one metal selected from the group consisting of elements from Group 6 and Groups 8 through 10 of the Periodic Table. The zeolite beta has an OD acidity of 20 to 50 ?mol/g and the catalyst support comprises an amorphous silica aluminate and a second support material when the weight percentage content of the zeolite beta is less than the weight percentage of the zeolite USY, and, when the weight percentage content of the zeolite beta is greater than the weight percentage of the zeolite USY, the zeolite beta has an OD acidity of 20 to 400 ?mol/g, the zeolite beta content is from 0.5 to 10 wt. % and the zeolite USY has an ASDI between 0.05 and 0.12 with a corresponding zeolite USY content of from 0 to 5 wt. %. A process for hydrocracking a hydrocarbonaceous feedstock using the catalyst is also described as is a method for making the hydrocracking catalyst.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: February 9, 2021
    Assignee: Chevron U.S.A. Inc.
    Inventors: Yihua Zhang, Theodorus Ludovicus Michael Maesen, Yalin Hao, Thomas Michael Rea, Don Ramon Bushee
  • Publication number: 20200326875
    Abstract: Direct data transfer between devices having a shared bus may be implemented with reduced involvement from a controller associated with the devices. A controller, a source memory device, and a target memory device may be coupled with a shared bus. The controller may identify a source address at the source memory device for data to be transferred to the target memory device. The controller also may identify a target address in the target memory device, and initiate a data transfer directly from the source to the target through a command that is received at both the source and the target memory device. In response to the command, the source memory device may read data out to the bus, and the target memory may read the data from the bus and store the data starting at the target address without further commands from the controller.
    Type: Application
    Filed: April 24, 2020
    Publication date: October 15, 2020
    Inventors: Yihua Zhang, James Cooke
  • Publication number: 20200299142
    Abstract: A family of new crystalline molecular sieves designated SSZ-91 is disclosed, as are methods for making SSZ-91 and uses for SSZ-91. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure.
    Type: Application
    Filed: April 14, 2020
    Publication date: September 24, 2020
    Inventors: Adeola Florence OJO, Dan XIE, Yihua ZHANG, Guan-Dao LEI
  • Patent number: 10671310
    Abstract: Direct data transfer between devices having a shared bus may be implemented with reduced involvement from a controller associated with the devices. A controller, a source memory device, and a target memory device may be coupled with a shared bus. The controller may identify a source address at the source memory device for data to be transferred to the target memory device. The controller also may identify a target address in the target memory device, and initiate a data transfer directly from the source to the target through a command that is received at both the source and the target memory device. In response to the command, the source memory device may read data out to the bus, and the target memory may read the data from the bus and store the data starting at the target address without further commands from the controller.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: June 2, 2020
    Assignee: Micron Technology, Inc.
    Inventors: Yihua Zhang, James Cooke