Qinghua Duan

This inventor holds 8 USPTO granted patents and 3 published patent applications and 7 EPO patents. Top assignees: Research Institute of Petroleum Processing, Sinopec, China Petroleum Chemical Corporation, China Petroleum & Chemical Corporation. Active years: 2014-2026.

USPTO Granted Patents = 8 (Patent Applications = 3)

% Patents Active = 87.5

EPO Patents = 7 (Patent Applications = 7)

Average Co-Inventor Count = 4.4

ph-index = 1

Forward Citations = 1(Granted Patents)

Company Filing History:

8 out of 210

Research Institute of Petroleum Processing, Sinopec

patents

7 out of 674

China Petroleum Chemical Corporation

patents

1 out of 77

China Petroleum & Chemical Corporation

patents

where one patent can have more than one assignee

Years Active: 2014-2026

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12629651 - Apparatus and process for preparing polyalpha-olefins (2026-05-19),

2. 11028334 - Gradient copolymer, its production and application thereof (2021-06-08),

3. 10968313 - Amine polymer and preparation method and use thereof (2021-04-06),

4. 10822359 - Benzotriazole derivative, preparation process and the use thereof (2020-11-03),

5. 9593290 - Lubricating oil composition and production thereof (2017-03-14),

6. 9587198 - Mannich base, production and use thereof (2017-03-07),

7. 9512380 - Hindered phenol compound, preparation thereof and use thereof as an antioxidant (2016-12-06),

8. 8697616 - Organic molybdenum additive, its preparation method, a lubricating composition containing said additive, and use of the same (2014-04-15),

Title: Qinghua Duan: Innovator in Polymer Chemistry

Introduction

Qinghua Duan is a prominent inventor based in Beijing, China. He has made significant contributions to the field of polymer chemistry, holding a total of seven patents. His work focuses on the development of innovative materials with various applications.

Latest Patents

One of his latest patents is titled "Gradient copolymer, its production and application thereof." This invention involves a gradient copolymer that comprises or consists of n polymer components, each representing an addition polymer of a specific monomer. The average side chain carbon number of the polymer components is determined using nuclear magnetic resonance methods. Another notable patent is "Amine polymer and preparation method and use thereof." This invention relates to an amino polymer that serves as a fuel oil detergent, offering advantages such as lower manufacturing costs and improved performance in inhibiting deposit formation.

Career Highlights

Qinghua Duan has worked with notable organizations, including China Petroleum & Chemical Corporation and the Research Institute of Petroleum Processing, Sinopec. His experience in these institutions has allowed him to apply his innovative ideas in practical settings, contributing to advancements in the industry.

Collaborations

He has collaborated with esteemed colleagues, including Zuoxin Huang and Shuo Su, further enhancing the impact of his work in polymer chemistry.

Conclusion

Qinghua Duan's contributions to polymer chemistry through his patents and collaborations highlight his role as an influential inventor in the field. His innovative approaches continue to shape the future of material science.