Fen RUAN

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Stevenson Ranch, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Car mobile phone connection device
- Patent number 12,071,078
- Issue date Aug 27, 2024
- Yaowu Ma
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Keys and locks
- Patent number 11,790,711
- Issue date Oct 17, 2023
- Yaowu Ma
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electrical connector structure adapted for vehicle cigarette lighte...
- Patent number 11,056,828
- Issue date Jul 6, 2021
- Yaowu Ma
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Key and lock set
- Patent number 11,055,938
- Issue date Jul 6, 2021
- Yaowu Ma
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electrical connector structure adapted for a cigarette lighting dev...
- Patent number 10,797,436
- Issue date Oct 6, 2020
- Yaowu Ma
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
rail structure of steel rail track and steel wheel vehicle
- Publication number 20240376675
- Publication date Nov 14, 2024
- Yaowu Ma
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Application
KEYS AND LOCKS
- Publication number 20240346865
- Publication date Oct 17, 2024
- Yaowu MA
- B60 - VEHICLES IN GENERAL
Information Patent Application
Car mobile phone connection device
- Publication number 20230051385
- Publication date Feb 16, 2023
- Yaowu MA
- B60 - VEHICLES IN GENERAL
Information Patent Application
KEYS AND LOCKS
- Publication number 20210312735
- Publication date Oct 7, 2021
- Yaowu MA
- B60 - VEHICLES IN GENERAL
Information Patent Application
ELECTRICAL CONNECTOR STRUCTURE ADAPTED FOR VEHICLE CIGARETTE LIGHTE...
- Publication number 20200388956
- Publication date Dec 10, 2020
- Yaowu MA
- B60 - VEHICLES IN GENERAL
Information Patent Application
KEYS AND LOCKS
- Publication number 20200143616
- Publication date May 7, 2020
- Yaowu MA
- B60 - VEHICLES IN GENERAL
Information Patent Application
SECURE ELECTRICAL SOCKET AND PLUG
- Publication number 20180323537
- Publication date Nov 8, 2018
- Yaowu MA
- B60 - VEHICLES IN GENERAL