Donggyu Chang

This inventor holds 17 USPTO granted patents and 18 published patent applications and 6 EPO patents, primarily in Lithium-Ion Battery Chemistry. Top assignees: Samsung Sdi Co., Inc., Samsung Sdi., Ltd., Samsung Electronics Co., Ltd.. Active years: 2018-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donggyu Chang. Retrieved from https://idiyas.com/inventor/donggyu-chang

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

Calculating rank

USPTO Granted Patents = 17 (Patent Applications = 18)

% Patents Active = 100.0

EPO Patents = 6 (Patent Applications = 21)

Average Co-Inventor Count = 4.3

ph-index = 2

Forward Citations = 11(Granted Patents)

Location History:

Suwon-si, KR (2018)
Yongin-si, KR (2020 - 2024)

Company Filing History:

14 out of 7,663

Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

patents

Years Active: 2018-2026

Loading Chart...

Areas of Expertise:

Nickel-Based Active Material

Lithium Secondary Battery

Positive Electrode

Cathode Active Material

Preparing Method

Rechargeable Lithium Battery

Active Material Precursor

Negative Electrode Active Material

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12738490 - Nickel-based active material for lithium secondary battery, method of preparing the same, and lithium secondary battery including positive electrode including the nickel-based active material (2026-09-15),

2. 12738488 - Nickel-based active material for lithium secondary battery, method of preparing the same, and lithium secondary battery including positive electrode including the nickel-based active material (2026-09-15),

3. 12322791 - Positive active material for rechargeable lithium battery, preparing method thereof and rechargeable lithium battery including the same (2025-06-03),

4. 12300807 - Positive active material for rechargeable lithium battery, preparing method thereof and rechargeable lithium battery including the same (2025-05-13),

5. 12080882 - Cathode active material for lithium secondary battery, and lithium secondary battery comprising cathode including cathode active material (2024-09-03),

6. 11955632 - Positive active material precursor, positive active material, method of preparing the same, positive electrode including the same and rechargeable lithium battery including the same (2024-04-09),

7. 11757092 - Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same (2023-09-12),

8. 11742482 - Nickel-based active material for lithium secondary battery, method of preparing the same, and lithium secondary battery including positive electrode including the nickel-based active material (2023-08-29),

9. 11569503 - Nickel-based active material for lithium secondary battery, method of preparing the same, and lithium secondary battery including positive electrode including the nickel-based active material (2023-01-31),

10. 11552294 - Nickel-based active material for lithium secondary battery, method of preparing the same, and lithium secondary battery including positive electrode including the nickel-based active material (2023-01-10),

11. 11456458 - Nickel-based active material precursor for lithium secondary battery, preparing method thereof, nickel-based active material for lithium secondary battery formed thereof, and lithium secondary battery comprising positive electrode including the nickel-based active material (2022-09-27),

12. 11309542 - Nickel-based active material for lithium secondary battery, preparing method thereof, and lithium secondary battery including positive electrode including the same (2022-04-19),

13. 11302919 - Nickel-based active material for lithium secondary battery, method of preparing the same, and lithium secondary battery including positive electrode including the nickel-based active material (2022-04-12),

14. 11201328 - Nickel active material precursor for lithium secondary battery, method for producing nickel active material precursor, nickel active material for lithium secondary battery produced by method, and lithium secondary battery having cathode containing nickel active material (2021-12-14),

15. 11152610 - Cathode active material for lithium secondary battery, and lithium secondary battery comprising cathode including cathode active material (2021-10-19),

Title: The Innovations of Donggyu Chang

Introduction

Donggyu Chang is a prominent inventor based in Yongin-si, South Korea. He has made significant contributions to the field of rechargeable lithium batteries, holding a total of 15 patents. His work focuses on enhancing the performance and efficiency of battery materials, which is crucial for the advancement of energy storage technologies.

Latest Patents

Chang's latest patents include a positive active material for rechargeable lithium batteries, along with the methods of preparing these materials. One of his notable inventions describes a positive active material that consists of a first positive active material in the form of secondary particles, which are aggregates of primary particles. Additionally, it features a second positive active material in a single particle form. Both materials are nickel-based and coated with cobalt, with the second material exhibiting a maximum surface roughness of at least 15 nm. This innovation aims to improve the overall performance of rechargeable lithium batteries.

Career Highlights

Throughout his career, Donggyu Chang has worked with leading companies in the technology sector, including Samsung SDI Co., Inc. and Samsung Electronics Co., Ltd. His experience in these organizations has allowed him to develop cutting-edge technologies that contribute to the advancement of battery technology.

Collaborations

Chang has collaborated with notable colleagues, including Jongmin Kim and Jinhwa Kim. Their combined expertise has fostered innovation in the field of energy storage solutions.

Conclusion

Donggyu Chang's contributions to the field of rechargeable lithium batteries highlight his role as a key innovator in energy storage technology. His patents and collaborations reflect a commitment to advancing battery performance and efficiency.

Profile summary based on public USPTO records.