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For the Inventor, By the Inventor

San Jose, CA, United States of America

Stuart Stephen Papworth Parkin

This inventor holds 52 USPTO granted patents and 4 published patent applications, primarily in Magnetic Materials (CPC class H01F). Top assignees: International Business Machines Corporation, Samsung Electronics Co., Ltd., Infineon Technologies Ag. Active years: 1999-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Stuart Stephen Papworth Parkin. Retrieved from https://idiyas.com/inventor/stuart-stephen-papworth-parkin

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 52 

% Patents Active = 75.0

Average Co-Inventor Count = 1.8

ph-index = 22

Forward Citations = 1,323(Granted Patents)

Forward Citations (Not Self Cited) = 1,250(Dec 10, 2025)


Inventors with similar research interests:


Company Filing History:

goldMedal47 out of 166,351 
 
International Business Machines Corporation
 patents
silverMedal5 out of 132,108 
 
Samsung Electronics Co., Ltd.
 patents
bronzeMedal1 out of 15,027 
 
Infineon Technologies Ag
 patents
where one patent can have more than one assignee

Years Active: 1999-2023

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Areas of Expertise:
Heusler Compounds
Magnetic Junctions
Spin-Current Memory
Tunnel Magnetoresistance
Tunneling Barriers
Robotic Device
Domain Wall Motion
Substrate Transfer
Amorphous Materials
Oxide Conductivity
Synthetic Anti-Ferromagnets
Magnetic Multilayers
52 patents (USPTO):Explore Patents
1. 11804321 - Tunable templating layers for perpendicularly magnetized Heusler films (2023-10-31),
2. 11756578 - Ferrimagnetic Heusler compounds with high spin polarization (2023-09-12),
3. 11751486 - Templating layers for perpendicularly magnetized Heusler films/compounds (2023-09-05),
4. 11665979 - Magnetic junctions having enhanced tunnel magnetoresistance and utilizing heusler compounds (2023-05-30),
5. 11538987 - IrAl as a non-magnetic spacer layer for formation of synthetic anti-ferromagnets (SAF) with Heusler compounds (2022-12-27),
6. 9590176 - Controlling the conductivity of an oxide by applying voltage pulses to an ionic liquid (2017-03-07),
7. 8936293 - Robotic device for substrate transfer applications (2015-01-20),
8. 8861262 - Spin-current switchable magnetic memory element and method of fabricating the memory element (2014-10-14),
9. 8860105 - Spin-current switched magnetic memory element suitable for circuit integration and method of fabricating the memory element (2014-10-14),
10. 8687415 - Domain wall motion in perpendicularly magnetized wires having artificial antiferromagnetically coupled multilayers with engineered interfaces (2014-04-01),
11. 8673791 - Method and apparatus for substrate-mask alignment (2014-03-18),
12. 8657352 - Robotic device for substrate transfer applications (2014-02-25),
13. 8638601 - Domain wall motion in perpendicularly magnetized wires having magnetic multilayers with engineered interfaces (2014-01-28),
14. 8558332 - Spin-current switched magnetic memory element suitable for circuit integration and method of fabricating the memory element (2013-10-15),
15. 8310863 - Spin-current switchable magnetic memory element and method of fabricating the memory element (2012-11-13),

Title: Stuart Stephen Papworth Parkin: Innovator in Magnetic Technologies

Introduction

Stuart Stephen Papworth Parkin, based in San Jose, CA, is a distinguished inventor with an impressive portfolio of 52 patents. His work primarily focuses on advancements in magnetic technologies, particularly in the fields of magnetic layers and devices.

Latest Patents

Among his notable contributions are his latest patents, including the innovation titled "Tunable Templating Layers for Perpendicularly Magnetized Heusler Films." This invention describes a device that consists of a templating structure and a magnetic layer. The templating structure features specific constituents D and E. With a defined ratio DE, where x ranges from 0.4 to 0.6, E contains a main constituent comprised of elements such as Al, Ga, and Ge, with at least fifty atomic percent of this main constituent. D incorporates Ir and a minimum of 50 atomic percent of its constituent, ensuring the templating structure remains nonmagnetic at room temperature.

Another significant patent is "Ferrimagnetic Heusler Compounds with High Spin Polarization." It introduces a magnetic device that includes a multilayer structure composed of alternating layers of materials A and E. Material A may include various elements like Co, Ru, or Ir, and can also be in the form of an IrCo alloy. The other materials in E typically comprise Al in combinations such as AlGa or AlGe. The integration of an Al-doped Heusler compound in the magnetic layer establishes a crucial interface with the multilayer structure.

Career Highlights

Stuart has made substantial contributions to the field while working with prominent companies like IBM and Samsung Electronics Co., Ltd. His work at these organizations has not only advanced theoretical knowledge but has also translated into practical applications within the technology sector.

Collaborations

Throughout his career, Stuart has collaborated with esteemed colleagues, including Mahesh Govind Samant and Jonathan Zanhong Sun. These partnerships have facilitated innovative research and development in magnetic devices and technologies.

Conclusion

Stuart Stephen Papworth Parkin stands out as a leading inventor in the magnetic technology domain. His extensive patent portfolio and collaborations with industry giants highlight his significant influence on the future of magnetic materials and devices. His ongoing research continues to pave the way for innovative solutions that could impact various technological applications.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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