Patents by Inventor Zhanjie Li
Zhanjie Li 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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Patent number: 11882361Abstract: Aspects of the present disclosure generally relate to optical devices and related methods that facilitate tilt in camera systems, such as tilt of a lens. In one example, an optical device includes a lens, an image sensor disposed below the lens, a plurality of magnets disposed about the lens, and a plurality of: (1) vertical coil structures coiled in one or more vertical planes and (2) horizontal coil structures coiled in one or more horizontal planes. When power is applied, the coil structures can generate magnetic fields that, in the presence of the magnets, cause relative movement of the coil structures and associated structures. The plurality of vertical coil structures are configured to horizontally move the lens. The plurality of horizontal coil structures are configured to tilt the lens when differing electrical power is applied to at least two of the plurality of horizontal coil structures.Type: GrantFiled: November 19, 2021Date of Patent: January 23, 2024Assignee: Western Digital Technologies, Inc.Inventors: Quang Le, Rajeev Nagabhirava, Kuok San Ho, Zhigang Bai, Zhanjie Li, Xiaoyong Liu, Daniele Mauri
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Patent number: 11881235Abstract: The present disclosure relates to a magnetic recording head having an exchange biased leading shield or leading edge shield (LES). The LES is a bilayer structure. One or more layers are coupled below the LES such that the LES is disposed between the main pole and the one or more layers. The one or more layers exchange bias the LES such that the upper layer of the LES has a magnetization parallel to the magnetization of the trailing shield. The lower layer of the LES has a magnetization that is antiparallel to the magnetization of the upper layer of the LES. The one or more layers set the preferred direction for the lower layer of the LES and sets the LES as a two-domain state without relying upon the anisotropy field (Hk) of either the upper or lower layers of the LES.Type: GrantFiled: February 22, 2022Date of Patent: January 23, 2024Assignee: Western Digital Technologies, Inc.Inventors: Alexander Goncharov, Zhanjie Li, Terence T. Lam, Suping Song
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Publication number: 20240010797Abstract: A composition contains filler particles dispersed in a matrix material, wherein the matrix material includes: (a) a first polyorganosiloxane that comprises an average of 2 or more succinic anhydride groups per molecule; and (b) a second polyorganosiloxane other than the first polyorganosiloxane; wherein the filler particles are present at a concentration in a range of 15 to 80 volume-percent based on composition volume and wherein the first polyorganosiloxane is present at a concentration sufficient to provide succinic anhydride groups at a concentration of 0.30 to 200 micromoles per gram of matrix material.Type: ApplicationFiled: January 13, 2022Publication date: January 11, 2024Inventors: Zhanjie Li, Kyle McDonald, Andrés E. Becerra, Joseph Sootsman, Chi-Hao Chang, Darren Hansen, Dongchan Ahn, Richard Cooper
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Publication number: 20230419990Abstract: The present disclosure generally relates to a bismuth antimony (BiSb) based STO (spin torque oscillator) sensor. The STO sensor comprises a SOT device and a magnetic tunnel junction (MTJ) structure. By utilizing a BiSb layer within the SOT device, a larger spin Hall angle (SHA) can be achieved, thereby improving the efficiency and reliability of the STO sensor.Type: ApplicationFiled: September 11, 2023Publication date: December 28, 2023Applicant: Western Digital Technologies, Inc.Inventors: Xiaoyong LIU, Zhanjie LI, Quang LE, Brian R. YORK, Cherngye HWANG, Kuok San HO, Hisashi TAKANO
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Patent number: 11854581Abstract: Embodiments of the present disclosure generally relate to a magnetic media drive employing a magnetic recording device. The magnetic recording device comprises a trailing gap disposed adjacent to a first surface of a main pole, a first side gap disposed adjacent to a second surface of the main pole, a second side gap disposed adjacent to a third surface of the main pole, and a leading gap disposed adjacent to a fourth surface of the main pole. A side shield surrounds the main pole and comprises a heavy metal first layer and a magnetic second layer. The first layer surrounds the first, second, and third surfaces of the main pole, or the second, third, and fourth surfaces of the main pole. The second layer surrounds the second and third surfaces of the main pole, and may further surround the fourth surface of the main pole.Type: GrantFiled: July 8, 2022Date of Patent: December 26, 2023Assignee: Western Digital Technologies, Inc.Inventors: Suping Song, Zhanjie Li, Terence T. Lam, Lijie Guan
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Patent number: 11848034Abstract: The present disclosure generally relates to magnetic recording devices with stable magnetization. The magnetic recording device comprises a lower leading shield, an upper leading shield disposed on the lower leading shield, a main pole disposed above the upper leading shield, a trailing shield disposed above the main pole and upper leading shield, and an upper return pole disposed above the trailing shield. A first non-magnetic layer is disposed between the lower leading shield and the upper leading shield, and a second non-magnetic layer is disposed between the trailing shield and the upper return pole. The lower leading shield has a different domain state than the upper leading shield, and the trailing shield and the upper leading shield have a same domain state. The materials and thickness of the first and second non-magnetic layers result in magnetostatic coupling or anti-ferromagnetic coupling.Type: GrantFiled: December 3, 2021Date of Patent: December 19, 2023Assignee: Western Digital Technologies, Inc.Inventors: Yingjian Chen, Yonghua Chen, Anna Zheng, Zhanjie Li, Yi Wang, Jian Xiang Shen, Lijie Guan
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Patent number: 11783853Abstract: The present disclosure generally relates to a bismuth antimony (BiSb) based STO (spin torque oscillator) sensor. The STO sensor comprises a SOT device and a magnetic tunnel junction (MTJ) structure. By utilizing a BiSb layer within the SOT device, a larger spin Hall angle (SHA) can be achieved, thereby improving the efficiency and reliability of the STO sensor.Type: GrantFiled: May 31, 2022Date of Patent: October 10, 2023Assignee: Western Digital Technologies, Inc.Inventors: Xiaoyong Liu, Zhanjie Li, Quang Le, Brian R. York, Cherngye Hwang, Kuok San Ho, Hisashi Takano
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Publication number: 20230279165Abstract: A process to form a crosslinked composition comprising thermally treating a composition at a temperature ? 25° C., in the presence of moisture, and wherein the composition comprises the following components: a) an olefin/silane interpolymer, b) a cure catalyst selected from the following: i) a metal alkoxide, ii) a metal carboxylate, iii) a metal sulfonate, iv) an aryl sulfonic acid, v) a tris-aryl borane, vi) any combination of two or more from i)-v). Also, a composition comprising the following components a and b, as described above. A process to form an olefin/alkoxysilane interpolymer, and the corresponding composition, said process comprising thermally treating a composition comprising the following components: a) an olefin/silane interpolymer, b) an alcohol, and c) a Lewis acid.Type: ApplicationFiled: June 23, 2021Publication date: September 7, 2023Applicants: Dow Global Technologies LLC, Dow Silicones CorporationInventors: Jordan C. Reddel, Mark F. Sonnenschein, David S. Laitar, Andrew B. Shah, Bethany M. Neilson, Colin LiPi Shan, David D. Devore, Jozef J. I. Van Dun, Philip D. Hustad, Zhanjie Li, Zachary S. Kean, Ken Kawamoto
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Patent number: 11749299Abstract: Embodiments of the present disclosure generally relate to a magnetic media drive employing a magnetic recording device. The magnetic recording device comprises a trailing gap disposed adjacent to a first surface of a main pole, a first side gap disposed adjacent to a second surface of the main pole, a second side gap disposed adjacent to a third surface of the main pole, and a leading gap disposed adjacent to a fourth surface of the main pole. A side shield surrounds the main pole and comprises a heavy metal first layer and a magnetic second layer. The first layer surrounds the first, second, and third surfaces of the main pole, or the second, third, and fourth surfaces of the main pole. The second layer surrounds the second and third surfaces of the main pole, and may further surround the fourth surface of the main pole.Type: GrantFiled: September 30, 2020Date of Patent: September 5, 2023Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.Inventors: Suping Song, Zhanjie Li, Terence Lam, Lijie Guan
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Publication number: 20230265222Abstract: An interpolymer, which comprises at least one siloxane group, and prepared by polymerizing a mixture comprising one or more “addition polymerizable monomers” and at least one siloxane monomer, in the presence of a catalyst system comprising a Group 3-10 metal complex, and the siloxane monomer is selected from the following Formula 1: Aa-Si(Bb)(Cc)(Hh0)—O—(Si(Dd)(Ee) (Hh1)—O)x—Si(Ff)(Gg)(Hh2), described herein. An ethylene/siloxane interpolymer comprising at least one chemical unit of Structure 1, or at least one chemical unit of Structure 2, each described herein. A process to form an interpolymer, which comprises, in polymerized form, at least one siloxane monomer, or at least one silane monomer without a siloxane linkage, said process comprising polymerizing a mixture comprising one or more “addition polymerizable monomers” and at least one monomer of Formula 4, described herein, in the presence of a catalyst system comprising a metal complex from Formula A or Formula B, each described herein.Type: ApplicationFiled: June 23, 2021Publication date: August 24, 2023Applicants: Dow Global Technologies LLC, Dow Silicones Corporation, Rohm and Haas CompanyInventors: Liam Spencer, Zachary S. Kean, David D. Devore, Jordan C. Reddel, Bethany M. Neilson, Matthew Olsen, Zhanjie Li, Phillip D. Hustad
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Publication number: 20230267953Abstract: The present disclosure relates to a magnetic recording head having an exchange biased leading shield or leading edge shield (LES). The LES is a bilayer structure. One or more layers are coupled below the LES such that the LES is disposed between the main pole and the one or more layers. The one or more layers exchange bias the LES such that the upper layer of the LES has a magnetization parallel to the magnetization of the trailing shield. The lower layer of the LES has a magnetization that is antiparallel to the magnetization of the upper layer of the LES. The one or more layers set the preferred direction for the lower layer of the LES and sets the LES as a two-domain state without relying upon the anisotropy field (Hk) of either the upper or lower layers of the LES.Type: ApplicationFiled: February 22, 2022Publication date: August 24, 2023Applicant: Western Digital Technologies, Inc.Inventors: Alexander GONCHAROV, Zhanjie LI, Terence T. LAM, Suping SONG
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Patent number: 11732175Abstract: A non-curable thermally conductive material contains: (a) a matrix material containing: (i) 90 to 98 wt % of a non-functional non-crosslinked organosiloxane fluid having a dynamic viscosity of 50 to 350 centiStokes; and (ii) 2 to less than 10 wt % of a crosslinked hydrosilylation reaction product of an alkenyl terminated polydiorganosiloxane having a degree of polymerization greater than 300 and an organohydrogensiloxane crosslinker with 2 or more SiH groups per molecule where the molar ratio of SiH groups to alkenyl groups is 0.5 to 2.0; (b) greater than 80 wt % to less than 95 wt % thermally conductive filler dispersed throughout the matrix material; and (c) treating agents selected from alkyltrialkoxy silanes where the alkyl contains one to 14 carbon atoms and monotrialkoxy terminated diorganopolysiloxanes having a degree of polymerization of 20 to 110 and the alkoxy groups each contain one to 12 carbon atoms dispersed in the matrix material.Type: GrantFiled: October 28, 2020Date of Patent: August 22, 2023Assignee: DOW SILICONES CORPORATIONInventors: Dorab Bhagwagar, Cassie Hale, Peng Wei, Qianqing Ge, Yan Zheng, Zhanjie Li
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Publication number: 20230212447Abstract: A non-curable thermally conductive material contains: (a) a matrix material containing: (i) 90 to 98 wt % of a non-functional non-crosslinked organosiloxane fluid having a dynamic viscosity of 50 to 350 centiStokes; and (ii) 2 to less than 10 wt % of a crosslinked hydrosilylation reaction product of an alkenyl terminated polydiorganosiloxane having a degree of polymerization greater than 300 and an organohydrogensiloxane crosslinker with 2 or more SiH groups per molecule where the molar ratio of SiH groups to alkenyl groups is 0.5 to 2.0; (b) greater than 80 wt % to less than 95 wt % thermally conductive filler dispersed throughout the matrix material; and (c) treating agents selected from alkyltrialkoxy silanes where the alkyl contains one to 14 carbon atoms and monotrialkoxy terminated diorganopolysiloxanes having a degree of polymerization of 20 to 110 and the alkoxy groups each contain one to 12 carbon atoms dispersed in the matrix material.Type: ApplicationFiled: October 28, 2020Publication date: July 6, 2023Inventors: Dorab Bhagwagar, Cassie Hale, Peng Wei, Qianqing Ge, Yan Zheng, Zhanjie Li
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Patent number: 11682418Abstract: The present disclosure generally relates to data storage devices, and more specifically, to a magnetic media drive employing a magnetic recording head. The head includes a main pole at a media facing surface (MFS), a trailing shield at the MFS, and a heavy metal layer disposed between the main pole and the trailing shield at the MFS. Spin-orbit torque (SOT) is generated from the heavy metal layer and transferred to a surface of the main pole as a current passes through the heavy metal layer in a cross-track direction. The SOT executes a torque on the surface magnetization of the main pole, which reduces the magnetic flux shunting from the main pole to the trailing shield. With the reduced magnetic flux shunting from the main pole to the trailing shield, write-ability is improved.Type: GrantFiled: July 19, 2022Date of Patent: June 20, 2023Assignee: Western Digital Technologies, Inc.Inventors: Suping Song, Zhanjie Li, Michael Kuok San Ho, Quang Le, Alexander M. Zeltser
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Publication number: 20230178104Abstract: The present disclosure generally relates to magnetic recording devices with stable magnetization. The magnetic recording device comprises a lower leading shield, an upper leading shield disposed on the lower leading shield, a main pole disposed above the upper leading shield, a trailing shield disposed above the main pole and upper leading shield, and an upper return pole disposed above the trailing shield. A first non-magnetic layer is disposed between the lower leading shield and the upper leading shield, and a second non-magnetic layer is disposed between the trailing shield and the upper return pole. The lower leading shield has a different domain state than the upper leading shield, and the trailing shield and the upper leading shield have a same domain state. The materials and thickness of the first and second non-magnetic layers result in magnetostatic coupling or anti-ferromagnetic coupling.Type: ApplicationFiled: December 3, 2021Publication date: June 8, 2023Inventors: Yingjian CHEN, Yonghua CHEN, Anna ZHENG, Zhanjie LI, Yi WANG, Jian Xiang SHEN, Lijie GUAN
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Patent number: 11655369Abstract: A composition contains an organopolysiloxane having the average chemical structure (I): [R?R2SiO—(R2SiO)m]3—Si—[OSiR2]n—Y—Si(OR)3??(I) where: R is independently in each occurrence selected from alkyl, aryl, substituted alkyl and substituted alkyl groups having from one to 8 carbon atoms; R? is independently in each occurrence selected from R and terminally unsaturated alkylene groups having from 2 to 6 carbon atoms; Y is selected from a group consisting of: X, and X—(R2SiO)pSiR2—X; where p has an average value in a range of one to 3; and X is independently in each occurrence selected from alkylene and substituted alkylene groups having from one to 6 carbon atoms; and the average values for subscripts m and n are each greater than zero and independently selected so that the average value for the sum of all of the average m values and the average n value is in a range of 30-200.Type: GrantFiled: October 28, 2020Date of Patent: May 23, 2023Assignee: DOW SILICONES CORPORATIONInventors: Dorab Bhagwagar, Peng Wei, Qianqing Ge, Yan Zheng, Zhanjie Li
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Publication number: 20230099625Abstract: Described herein are methods for making alkenyl disiloxanes, comprising combining an alkenyl halosilane with an alkyl halosilane and adding the mixture to water, an acidic aqueous solution, or a basic aqueous solution. The ratio of the alkenyl halosilane to the alkyl halosilane is about 10:1 to about 1:10. The alkenyl halosilane and the alkyl halosilane are mixed at about 20° C. to about 45° C. The reaction product is separated and washed with saturated alkali carbonate solution.Type: ApplicationFiled: December 11, 2020Publication date: March 30, 2023Applicant: DOW SILICONES CORPORATIONInventors: Xiaoyuan ZHOU, Zhanjie LI, Eric JOFFRE
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Patent number: 11615809Abstract: The present disclosure generally relates to spin-orbital torque (SOT) differential reader designs. The SOT differential reader is a multi-terminal device that comprises a first shield, a first spin hall effect layer, a first free layer, a gap layer, a second spin hall effect layer, a second free layer, and a second shield. The gap layer is disposed between the first spin hall effect layer and the second spin hall effect layer. Electrical lead connections are located about the first spin hall effect layer, the second spin hall effect layer, the gap layer, the first shield, and/or the second shield. The electrical lead connections facilitate the flow of current and/or voltage from a negative lead to a positive lead. The positioning of the electrical lead connections and the positioning of the SOT differential layers improves reader resolution without decreasing the shield-to-shield spacing (i.e., read-gap).Type: GrantFiled: August 5, 2021Date of Patent: March 28, 2023Assignee: Western Digital Technologies, Inc.Inventors: Quang Le, Xiaoyong Liu, Zhigang Bai, Zhanjie Li, Kuok San Ho, Hisashi Takano
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Publication number: 20230090031Abstract: A composition contains an organopolysiloxane having the average chemical structure (I): [R?R2SiO—(R2SiO)m]3—Si—[OSiR2]n—Y—Si(OR)3??(I) where: R is independently in each occurrence selected from alkyl, aryl, substituted alkyl and substituted alkyl groups having from one to 8 carbon atoms; R? is independently in each occurrence selected from R and terminally unsaturated alkylene groups having from 2 to 6 carbon atoms; Y is selected from a group consisting of: X, and X—(R2SiO)pSiR2—X; where p has an average value in a range of one to 3; and X is independently in each occurrence selected from alkylene and substituted alkylene groups having from one to 6 carbon atoms; and the average values for subscripts m and n are each greater than zero and independently selected so that the average value for the sum of all of the average m values and the average n value is in a range of 30-200.Type: ApplicationFiled: October 28, 2020Publication date: March 23, 2023Inventors: Dorab Bhagwagar, Peng Wei, Qianqing Ge, Yan Zheng, Zhanjie Li
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Publication number: 20230056138Abstract: Described herein are methods for making alkenyl disiloxanes, comprising combining an alkenyl halosilane with a bis-hydrido terminated alkyl disiloxane and adding the mixture to water, an acidic aqueous solution, or a basic aqueous solution. The ratio of the alkenyl halosilane to the bis-hydrido terminated alkyl disiloxane is about 1:10 to about 10:1. The alkenyl halosilane and bis-hydrido terminated alkyl disiloxane are mixed at about 20° C. to about 45° C. In an example, no organic solvent is present. The reaction product is separated and washed with saturated NaHCO3 solution (e.g., sodium bicarbonate).Type: ApplicationFiled: December 11, 2020Publication date: February 23, 2023Applicant: DOW SILICONES CORPORATIONInventors: Xiaoyuan ZHOU, Zhanjie LI, Eric JOFFRE