Shandong, China

Haijun Liu

This inventor holds 2 USPTO granted patents. Top assignees: Weichai Power Co., Ltd., Weichai Heavy Machinery Co., Ltd. Active years: 2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Haijun Liu. Retrieved from https://idiyas.com/inventor/haijun-liu-rul2tlw8

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 1


Company Filing History:


Years Active: 2023

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2 patents (USPTO):Explore Patents

Title: Haijun Liu: Innovator in Engine Technology

Introduction

Haijun Liu is a prominent inventor based in Shandong, China. He has made significant contributions to the field of engine technology, holding a total of 2 patents. His innovative designs focus on enhancing the performance and reliability of engine components.

Latest Patents

Liu's latest patents include an engine piston and a fatigue testing apparatus for engine pistons. The engine piston features a first sealing structure that includes a first sealing rubber ring and a first annular groove at its head. This design allows for effective hydraulic oil circulation, which is crucial for simulating pressure loading under high-explosion conditions. The fatigue testing apparatus is designed to assess the durability of the engine piston by applying controlled pressure loads. Additionally, Liu has developed a control method and apparatus for a controller that utilizes a main control circuit board to manage initial control commands and adjust the operation of connected devices, such as heaters, in a closed-loop system.

Career Highlights

Throughout his career, Haijun Liu has worked with notable companies, including Weichai Power Co., Ltd. and Weichai Heavy Machinery Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects in engine technology.

Collaborations

Liu has collaborated with talented individuals such as Ninglu Wang and Jixuan Huang. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

Haijun Liu's contributions to engine technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry, paving the way for future innovations in engine design and performance.

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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