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: 20250028473
    Abstract: A system and related method, including system memory with a source memory block and a destination memory block each of a memory block size, a first volatile memory and a second volatile memory, each of a volatile memory size. The system includes processing circuitry to receive a garbage collection request associated with the destination memory block. The processing circuitry then determines whether the memory block size is greater than the volatile memory size and pauses data change operations but allows for passive operations to continue. While data change operations are paused the processing circuitry loads a first portion of data of the source memory block to the first volatile memory and a second portion of the data to the second volatile memory. The processing circuitry writes each portion of data from the volatile memory to the destination memory block to complete garbage collection and unpauses the data change operations.
    Type: Application
    Filed: July 18, 2023
    Publication date: January 23, 2025
    Inventors: Arun Athreya, Yihua Zhang, Shankar Natarajan, Parth Donga
  • Publication number: 20250021255
    Abstract: This application is directed to data protection in a memory system of an electronic device. The memory system has a first memory block and a second memory block, and each memory block includes one or more respective memory dies. Each memory die of the second memory block is distinct from the one or more respective memory dies of the first memory block. The electronic device stores user data including a plurality of user data items in the first memory block and integrity data including a plurality of integrity data items in the second memory block. Each of the plurality of user data items is configured to be validated based on a respective one of the plurality of integrity data items. The electronic device invalidates the integrity data in the second memory block, and reads the user data from the first memory block independently of the integrity data.
    Type: Application
    Filed: September 30, 2024
    Publication date: January 16, 2025
    Inventors: Arun ATHREYA, Yihua ZHANG, Shankar NATARAJAN, Sriram NATARAJAN
  • Patent number: 12189986
    Abstract: A system and related method, including storage circuitry and a control circuitry, which while executing a storage device driver, is to receive at least one instruction of a stream of instructions for the storage device. The control circuitry determines that a hardware buffer of the storage device is storing less than two instructions. In response to the determination that the hardware buffer of the storage device is storing less than two instructions, the control circuitry accesses data associated with an address of the memory of the storage device, wherein the address is predicted based on analysis of the stream of instructions and causes to be stored the data in a buffer of a plurality of buffers. The control circuitry executes an instruction of the stream of instructions using at least the data stored in the buffer.
    Type: Grant
    Filed: February 12, 2024
    Date of Patent: January 7, 2025
    Assignee: SK Hynix NAND Product Solutions Corp.
    Inventors: Arun Athreya, Mariusz Dolny, Bartosz Kot, Michał Mamczyński, Shivashekar Muralishankar, Shankar Natarajan, Yihua Zhang
  • Publication number: 20240367159
    Abstract: The present application pertains to family of new crystalline molecular sieves designated SSZ-92. Molecular sieve SSZ-92 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves and is characterized as having magnesium.
    Type: Application
    Filed: March 24, 2022
    Publication date: November 7, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Adeola OJO, Yihua ZHANG, Guan-Dao LEI, Howard Steven LACHEEN
  • Patent number: 12118222
    Abstract: This application is directed to data protection in a memory system of an electronic device. The memory system has a first memory block and a second memory block, and each memory block includes one or more respective memory dies. Each memory die of the second memory block is distinct from the one or more respective memory dies of the first memory block. The electronic device stores user data including a plurality of user data items in the first memory block and integrity data including a plurality of integrity data items in the second memory block. Each of the plurality of user data items is configured to be validated based on a respective one of the plurality of integrity data items. The electronic device invalidates the integrity data in the second memory block, and reads the user data from the first memory block independently of the integrity data.
    Type: Grant
    Filed: February 23, 2023
    Date of Patent: October 15, 2024
    Assignee: SK Hynix NAND Product Solutions Corp.
    Inventors: Arun Athreya, Yihua Zhang, Shankar Natarajan, Sriram Natarajan
  • Publication number: 20240327731
    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 24, 2021
    Publication date: October 3, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Jay Parekh, Jifei JIA, Guan-Dao LEI, Kenny PEINADO, Yihua ZHANG, Shanying LEE
  • Patent number: 12090468
    Abstract: An improved hydrotreating catalyst and process for making a base oil product. The catalyst comprises a base extrudate of a high nanopore volume amorphous silica alumina (ASA) and alumina. The catalyst and process use a high nanopore volume ASA/alumina based catalyst to produce hydrotreated dewaxed base oil products from a hydrocarbon feedstock. The base extrudate comprises ASA having a pore volume in the 11-20 nm pore diameter range of 0.2 to 0.9 cc/g and an alumina having a pore volume in the 11-20 nm pore diameter range of 0.01 to 1.0 cc/g. The base extrudate formed has a total pore volume in the 2-50 nm pore diameter range of 0.12 to 1.80 cc/g. The catalyst further comprises at least one modifier element from Groups 6 to 10 and Group 14 of the Periodic Table. The catalyst and process provide improved aromatics saturation.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: September 17, 2024
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Yihua Zhang, Guan-Dao Lei
  • Patent number: 12094545
    Abstract: In one example, reads in a NAND memory device are tracked for sub-groups. When the number of reads to a sub-group meets a threshold, the data at the wordline on which the threshold was met is moved along with the data at neighboring wordlines to an SLC block without moving the entire block. The performance impact and write amplification impact of read disturb mitigation can be significantly reduced while maintaining some data continuity.
    Type: Grant
    Filed: August 18, 2023
    Date of Patent: September 17, 2024
    Assignee: Intel NDTM US LLC
    Inventors: Arun Sitaram Athreya, Shankar Natarajan, Sriram Natarajan, Yihua Zhang, Suresh Nagarajan
  • Publication number: 20240299918
    Abstract: A hydroisomerization catalyst comprising a molecular sieve belonging to the ZSM-48 family of zeolites; an inorganic oxide support; one or more first modifiers selected from Groups 8 to 10; and one or more second modifiers selected from the group consisting of calcium (Ca), chromium (Cr), magnesium (Mg), lanthanum (La), barium (Ba), praseodymium (Pr), strontium (Sr), potassium (K) and neodymium (Nd). The molecular sieve comprises: a silicon oxide to aluminum oxide mole ratio of about 40 to about 220; at least about 70% polytype 6 of the total ZSM-48-type material present in the product; and an additional EUO-type molecular sieve phase in an amount of between about 0 and about 7.0 percent by weight of the total product. The molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between about 1 and about 8.
    Type: Application
    Filed: January 13, 2022
    Publication date: September 12, 2024
    Applicant: CHEVRON U.S.A. Inc.
    Inventors: Yihua ZHANG, Adeola OJO, Guan-Dao LEI
  • Publication number: 20240289040
    Abstract: This application is directed to data protection in a memory system of an electronic device. The memory system has a first memory block and a second memory block, and each memory block includes one or more respective memory dies. Each memory die of the second memory block is distinct from the one or more respective memory dies of the first memory block. The electronic device stores user data including a plurality of user data items in the first memory block and integrity data including a plurality of integrity data items in the second memory block. Each of the plurality of user data items is configured to be validated based on a respective one of the plurality of integrity data items. The electronic device invalidates the integrity data in the second memory block, and reads the user data from the first memory block independently of the integrity data.
    Type: Application
    Filed: February 23, 2023
    Publication date: August 29, 2024
    Inventors: Arun ATHREYA, Yihua ZHANG, Shankar NATARAJAN, Sriram NATARAJAN
  • Patent number: 12067284
    Abstract: A system and related method, including storage circuitry and a control circuitry, which while executing a storage device driver, is to receive at least one instruction of a stream of instructions for the storage device. The control circuitry determines that a hardware buffer of the storage device is storing less than two instructions. In response to the determination that the hardware buffer of the storage device is storing less than two instructions, the control circuitry accesses data associated with an address of the memory of the storage device, wherein the address is predicted based on analysis of the stream of instructions and causes to be stored the data in a buffer of a plurality of buffers. The control circuitry executes an instruction of the stream of instructions using at least the data stored in the buffer.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: August 20, 2024
    Assignee: SK Hynix NAND Product Solutions Corp.
    Inventors: Arun Athreya, Mariusz Dolny, Bartosz Kot, Michal Mamczyński, Shivashekar Muralishankar, Shankar Natarajan, Yihua Zhang
  • Publication number: 20240220156
    Abstract: A system and related method, including storage circuitry and a control circuitry, which while executing a storage device driver, is to receive at least one instruction of a stream of instructions for the storage device. The control circuitry determines that a hardware buffer of the storage device is storing less than two instructions. In response to the determination that the hardware buffer of the storage device is storing less than two instructions, the control circuitry accesses data associated with an address of the memory of the storage device, wherein the address is predicted based on analysis of the stream of instructions and causes to be stored the data in a buffer of a plurality of buffers. The control circuitry executes an instruction of the stream of instructions using at least the data stored in the buffer.
    Type: Application
    Filed: December 29, 2022
    Publication date: July 4, 2024
    Inventors: Arun Athreya, Mariusz Dolny, Bartosz Kot, Michal Mamczynski, Shivashekar Muralishankar, Shankar Natarajan, Yihua Zhang
  • Publication number: 20240220157
    Abstract: A system and related method, including storage circuitry and a control circuitry, which while executing a storage device driver, is to receive at least one instruction of a stream of instructions for the storage device. The control circuitry determines that a hardware buffer of the storage device is storing less than two instructions. In response to the determination that the hardware buffer of the storage device is storing less than two instructions, the control circuitry accesses data associated with an address of the memory of the storage device, wherein the address is predicted based on analysis of the stream of instructions and causes to be stored the data in a buffer of a plurality of buffers. The control circuitry executes an instruction of the stream of instructions using at least the data stored in the buffer.
    Type: Application
    Filed: February 12, 2024
    Publication date: July 4, 2024
    Inventors: Arun Athreya, Mariusz Dolny, Bartosz Kot, Michal Mamczynski, Shivashekar Muralishankar, Shankar Natarajan, Yihua Zhang
  • Publication number: 20240165596
    Abstract: The present application pertains to family of new crystalline molecular sieves designated SSZ-93. Molecular sieve SSZ-93 is structurally similar to sieves falling within the MTT structure type such as SSZ-32x, SSZ-32, ZSM-23, EU-13, ISI-4, and KZ-1 family of molecular sieves. SSZ-93 is characterized as having magnesium.
    Type: Application
    Filed: March 24, 2022
    Publication date: May 23, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Adeola OJO, Yihua ZHANG, Guan-Dao LEI, Howard Steven LACHEEN
  • Patent number: 11987757
    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: Grant
    Filed: December 30, 2020
    Date of Patent: May 21, 2024
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Kamala R. Krishna, Yihua Zhang, Guan-Dao Lei, Adeola Florence Ojo
  • Publication number: 20240149250
    Abstract: An improved hydrotreating catalyst and process for making a base oil product wherein the catalyst comprises a base extrudate that includes a high nanopore volume amorphous silica alumina (ASA) and an alumina. The catalyst and process generally involve the use of a high nanopore volume ASA/alumina based catalyst to produce hydrotreated dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst base extrudate advantageously comprises an amorphous silica alumina having a pore volume in the 11-20 nm pore diameter range of 0.2 to 0.9 cc/g and an alumina having, a pore volume in the 11-20 nm pore diameter range of 0.01 to 1.0 cc/g, with the base extrudate formed from the amorphous silica alumina 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 further comprises at least one modifier element from Groups 6 to 10 and Group 14 of the Periodic Table. The catalyst and process provide improved aromatics saturation.
    Type: Application
    Filed: March 10, 2022
    Publication date: May 9, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Yihua ZHANG, Guan-Dao LEI
  • Publication number: 20240141237
    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 20, 2021
    Publication date: May 2, 2024
    Inventors: Kamala R. KRISHNA, Yihua ZHANG, Guan-Dao LEI, Adeola OJO
  • Publication number: 20240110120
    Abstract: A method for making a base oil having enhanced color stability and the base oil prepared therefrom are disclosed. The method comprises adding a phenyl benzotriazole compound to a base oil composition to form a color-stabilized base oil composition. In some cases, the phenyl benzotriazole compound has the structural formula (I): wherein, R and R? are independently one or more substituents selected from hydrogen, substituted and unsubstituted alkyl, substituted and unsubstituted cycloalkyl, substituted and unsubstituted alkoxy, substituted and unsubstituted carboxyl, or a combination thereof, with the proviso that at least one of R and R? is a non-hydrogen substituent.
    Type: Application
    Filed: January 18, 2022
    Publication date: April 4, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Yihua ZHANG, Guan-Dao LEI, Malek M. ROSTAMI, Beth A. RUSSELL
  • Patent number: D1053570
    Type: Grant
    Filed: January 12, 2023
    Date of Patent: December 10, 2024
    Inventor: Yihua Zhang
  • Patent number: D1062648
    Type: Grant
    Filed: October 25, 2023
    Date of Patent: February 18, 2025
    Assignee: Zhejiang Jike Industry & Trade Co., Ltd
    Inventor: Yihua Zhang