Hongmei Zang

This inventor holds 58 USPTO granted patents and 1 published patent application, plus 8 CIPO patents and 1 EPO patent, primarily in Electrophoretic Displays (CPC class G09G). Top assignees: Sipix Imaging, Inc., E Ink California, LLC, Sipix Chemical Inc.. Active years: 2003-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hongmei Zang. Retrieved from https://idiyas.com/inventor/hongmei-zang

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

USPTO Granted Patents = 58 (Patent Applications = 1)

% Patents Active = 50.0

CIPO Patents = 8 (Patent Applications = 2)

EPO Patents = 1 (Patent Applications = 2)

Average Co-Inventor Count = 4.3

ph-index = 33

Forward Citations = 3,422(Granted Patents)

Forward Citations (Not Self Cited) = 3,148(Dec 10, 2025)

Inventors with similar research interests:

Company Filing History:

E Ink California, LLC

where one patent can have more than one assignee

Years Active: 2003-2016

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Areas of Expertise:

Electrophoretic Displays

Bi-Stable Displays

Microencapsulation

Display Panel Manufacturing

Pigment Particles

Liquid Crystal Display

Magnetophoretic Displays

High Performance Capsules

Electrophoretic Compositions

Micro-Reflectors

Color Filters

Thin Film Structures

58 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9373289 - Driving methods and circuit for bi-stable displays (2016-06-21),

2. 9114663 - Magnetophoretic and electromagnetophoretic displays (2015-08-25),

3. 8961831 - Silane-containing pigment particles for electrophoretic display (2015-02-24),

4. 8582197 - Process for preparing a display panel (2013-11-12),

5. 8520292 - Electrophoretic display and process for its manufacture (2013-08-27),

6. 8462102 - Driving methods for bistable displays (2013-06-11),

7. 8441432 - Display cell structure and electrode protecting layer compositions (2013-05-14),

8. 8363306 - Pigment particles for electrophoretic display (2013-01-29),

9. 8361620 - Functionalized halogenated polymers for microencapsulation (2013-01-29),

10. 8361356 - Composition and process for the sealing of microcups in roll-to-roll display manufacturing (2013-01-29),

11. 8274472 - Driving methods for bistable displays (2012-09-25),

12. 8257614 - Electrophoretic dispersions (2012-09-04),

13. 8238021 - Display devices having micro-reflectors and color filters (2012-08-07),

14. 8023071 - Transmissive or reflective liquid crystal display (2011-09-20),

15. 8018643 - Magnetophoretic and electromagnetophoretic displays (2011-09-13),

Title: Hongmei Zang - Innovator in Display Technology

Introduction

Hongmei Zang is a noted inventor based in Sunnyvale, California, with an impressive portfolio of 58 patents. His work primarily focuses on innovative display technologies, particularly those enhancing bi-stable display devices. Through his inventions, he has contributed significantly to improving image quality and display efficiency.

Latest Patents

Among Hongmei Zang's latest innovations are two significant patents. The first is concerned with "Driving methods and circuit for bi-stable displays." This patent presents methods that allow for the fastest display of images while ensuring optimal quality throughout the lifespan of electrophoretic display devices.

The second patent, "Magnetophoretic and electromagnetophoretic displays," encompasses a novel display device design. It features two insulating substrate layers, with at least one being transparent. The array of display cells is positioned between these layers and contains a dispersion of magnetic particles. This invention not only eliminates the need for a transparent conductor film, making the displays more cost-effective and durable, but it also improves image contrast and reflectance.

Career Highlights

Hongmei Zang has held notable positions in several companies, including Sipix Imaging, Inc. and E Ink California, LLC. His work has focused on advancing the technology used in electronic displays, ensuring they meet the growing demands for flexibility, durability, and image quality.

Collaborations

Throughout his career, Zang has collaborated with talented professionals in the field, including Rong-Chang Liang and Xiaojia Wang. These collaborations have enabled him to push the boundaries of conventional display technologies and develop innovative solutions for modern display challenges.

Conclusion

Hongmei Zang's contributions to the field of display technology are substantial, with numerous patents that enhance the functionality and efficiency of bi-stable displays. His continued work in this sector promises to lead to even more groundbreaking innovations in the future.

Profile summary based on public USPTO records.