logo

For the Inventor, By the Inventor

Tianjin, China

Cccc First Harbor Engineering Co., Ltd.


USPTO Granted Patents = 10


Forward Citations = 3

Loading Chart...
Loading Chart...

36 inventors (with patents filed for the assignee):

goldMedal Yiyong Li (7 out of 7 patents)

silverMedal Zengjun Li (6 out of 6 patents)

bronzeMedal Naishou Zhang (5 out of 5 patents)

4.  Chuang Du (4 out of 4 patents)

5.  Wei Pan (3 out of 3 patents)

6.  Jinfang Hou (3 out of 3 patents)

7.  Binbin Xu (2 out of 2 patents)

8.  Aimin Liu (2 out of 2 patents)

9.  Qiang Guo (1 out of 1 patent)

10.  Chao Gao (1 out of 2 patents)

11.  Bingchuan Guo (1 out of 1 patent)

12.  Zhenjie Tao (1 out of 2 patents)

13.  Jianning Zhang (1 out of 2 patents)

14.  Chao Zhang (1 out of 2 patents)

15.  Jinjin Ning (1 out of 1 patent)


10 patents:

1. 12448089 - Top-lock pull-out type connecting device and immersed tube construction ship (2025-10-21),
2. 12392609 - Methods for real-time deviation monitoring of miniature pipe roofing jacking pipe of spiral soil-discharging (2025-08-19),
3. 12215470 - Water replacement type storage field construction method and storage field (2025-02-04),
4. 12180668 - Methods for predicting a stability of a steel cylinder against tilt (2024-12-31),
5. 12163305 - Installation method for closure joint of immersed tunnel (2024-12-10),
6. 11821885 - Test methods for simulating sediment pollutant release under effect of river channel erosion (2023-11-21),
7. 11674283 - Semi-submersible immersed tube transportation and installation integrated ship and construction process (2023-06-13),
8. 11655608 - Water stopping device of suspension and sliding type and an application thereof (2023-05-23),
9. 10836459 - Self-propelled integrated ship for transporting and installing immersed tubes of underwater tunnel and construction process (2020-11-17),
10. 10781567 - Foundation treatment method for piling foundation structure by penetrating hardpan layer (2020-09-22),
Company Overview
Cccc First Harbor Engineering Co., Ltd. is a prominent engineering firm based in Tianjin, China, specializing in harbor construction and related infrastructure projects. The company focuses on the development and implementation of advanced engineering solutions for port facilities, coastal protection, and maritime infrastructure. With a commitment to innovation, it leverages modern technologies to enhance the efficiency and sustainability of its projects, contributing significantly to the maritime industry and regional economic development.
Profile summary synthesized from public USPTO records and patent filings.

logo

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

10 Patents

#38 in Tianjin

#2,807 in China

#56,047 in the World

Tianjin, CN
Tianjin, China

Cccc First Harbor Engineering Co., Ltd.

Forward Citations = 3

36 inventors:

goldMedal Yiyong Li (7 out of 7 patents)

silverMedal Zengjun Li (6 out of 6 patents)

bronzeMedal Naishou Zhang (5 out of 5 patents)

4.  Chuang Du (4 out of 4 patents)

5.  Wei Pan (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Cccc First Harbor Engineering Co., Ltd.. Retrieved from https://idiyas.com/company/cccc-first-harbor-engineering-company

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

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]
Loading…