Inventor

Zhanjie Li

Inventor

Pleasanton, CA, US

Overview

2009–2020

Patent span

Physics

Primary field (CPC G)

Patents· 53 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer39%

G11CStatic stores10%

H01LSemiconductor devices6%

H10BElectronic memory devices6%

H10NElectric solid-state devices not otherwise provided for6%

H01FMagnets5%

C07DHeterocyclic compounds4%

Y10TTechnical subjects covered by former us classification3%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations2%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry2%

PatentTitleYear

10,876,019Polyorganosiloxane compositions containing a 2-substituted-1-alkynyl-1-cyclohexanol useful as a hydrosilylation reaction inhibitor2020 10,878,841Dual writer for advanced magnetic recording2020 10,872,625Helical coils design and process for dual writer magnetic recording2020 10,867,626Spin orbital torque based microwave assisted magnetic recording with dual spin hall layers or wrap around spin hall layer2020 10,862,022Spin-transfer torque MRAM with magnetically coupled assist layers and methods of operating the same2020 10,844,073Palladium-mediated ketolization2020 10,839,831Dual writer designs with SOT and STT assisted recording2020 10,832,710Magnetic recording devices using virtual side shields for improved areal density capability2020 10,811,596Spin transfer torque MRAM with a spin torque oscillator stack and methods of making the same2020 10,797,227Spin-transfer torque MRAM with a negative magnetic anisotropy assist layer and methods of operating the same2020 10,796,717Perpendicular magnetic recording write head with heater and heat sink for providing temperature gradient across the main pole2020 10,789,975Perpendicular magnetic recording write head with heater and heat sink for providing temperature gradient across the main pole2020 10,787,474Process for preparing platinum organosiloxane complexes2020 10,789,977Spin orbital torque via spin hall effect based energy assisted magnetic recording2020 10,762,919Magnetic recording write head with write pole having a tapered trailing end section with negative magnetic anisotropy2020 10,734,015Magnetic recording write head having YIG-heavy metal-YIG in write gap and side gap to maximize spin-orbit-coupling efficiency2020 10,734,014Areal density capability improvement with a main pole skin2020 10,723,843Process for preparing platinum organosiloxane complexes using an enone additive2020 10,726,892Metallic magnetic memory devices for cryogenic operation and methods of operating the same2020 10,650,847Spin-orbit torque induced magnetization switching in a magnetic recording head2020 10,633,392Chromium-mediated coupling and application to the synthesis of halichondrins2020 10,403,309Dual spin-orbit torque oscillator in magnetic recording2019 10,392,400Palladium-mediated ketolization2019 10,344,038Chromium-mediated coupling and application to the synthesis of halichondrins2019 10,210,888Dual spin-orbit torque oscillator in magnetic recording2019 10,181,334Spin-orbit torque based magnetic recording2019 10,157,632Areal density capability improvement with spin-orbit torque based structures surrounding main pole tip2018 10,121,495Magnetic recording write apparatus having a stepped conformal trailing shield2018 10,014,012Spin-orbit torque based magnetic recording2018 9,799,351'Short yoke length writer having assist coils'2017 9,779,765'Perpendicular magnetic recording writer having improved performance and wide area track erasure reliability'2017 9,754,611'Magnetic recording write apparatus having a stepped conformal trailing shield'2017 9,595,273'Shingle magnetic writer having nonconformal shields'2017 9,576,598'Magnetic recording write apparatus having a pole and a magnetic separation layer'2017 9,558,763'Magnetic recording write apparatus having a pole including an assist portion extending in the cross-track direction'2017 9,478,242'Magnetic recording apparatus having a recessed additional pole segment'2016 9,349,390'Ultra-short yoke length writer'2016 9,286,919'Magnetic writer having a dual side gap'2016 9,245,562'Magnetic recording writer with a composite main pole'2016 9,214,165'Magnetic writer having a gradient in saturation magnetization of the shields'2015 9,111,550'Write transducer having a magnetic buffer layer spaced between a side shield and a write pole by non-magnetic layers'2015 9,111,564'Magnetic recording writer having a main pole with multiple flare angles'2015 9,053,715'System for providing a transducer having a split main pole'2015 8,947,985'Heat assisted magnetic recording transducers having a recessed pole'2015 8,917,480'Magnetic recording transducers having slim shaped additional poles'2014 8,837,081'Laminated touchdown sensor for hard disk drives'2014 8,786,983'Magnetic writer having a low aspect ratio two layer coil'2014 8,547,659'System for providing a transducer having a main coil and an additional coil separated from the main pole by a write shield'2013 8,405,930'Method and system for providing a transducer having dual, ABS recessed auxiliary poles on opposite sides of a main pole with non-magnetic spacer adjoining back portion of main pole and positioned between auxiliary poles'2013 8,213,221'Magnetic shielding in magnetic multilayer structures'2012 7,957,179'Magnetic shielding in magnetic multilayer structures'2011 7,486,552'Method and system for providing a spin transfer device with improved switching characteristics'2009 7,486,551'Method and system for providing domain wall assisted switching of magnetic elements and magnetic memories using such magnetic elements'2009

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2009–2012Based in Santa Clara, CA, US· patent location history

2012–2015Patents assigned to LI ZHANJIE (6)· patent assignee history

2013–2018Patents assigned to WESTERN DIGITAL FREMONT LLC (14)· patent assignee history

2013–2015Patents assigned to BAI ZHIGANG (5)· patent assignee history

2013–2020Based in Pleasanton, CA, US· patent location history

2016–2017Patents assigned to WESTERN DIGITAL (FREMONT) LLC (7)· patent assignee history

2018–2020Patents assigned to WESTERN DIGITAL TECH INC (17)· patent assignee history

2019–2020Based in Midland, MI, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
WESTERN DIGITAL TECH INC	17	2018–2020
WESTERN DIGITAL FREMONT LLC	14	2013–2018
WESTERN DIGITAL (FREMONT) LLC	7	2016–2017
LI ZHANJIEself	6	2012–2015
BAI ZHIGANG	5	2013–2015

Locations

Location	Patents	Span
Pleasanton, California, US	42	2013–2020
Midland, MI, US	7	2019–2020
Santa Clara, California, US	4	2009–2012