Inventor
GONG WEIYONG
CN6 patents
Patents
6 patentsUS10499140B2Dec 3, 2019
Speaker and headphone
Shenzhen grandsun electronic co ltd23 citations92
US12536986B2Jan 27, 2026
Noise reduction earpad, noise reduction earmuff and noise reduction headphone
Shenzhen grandsun electronic co ltd0 citations50
US11387027B2Jul 12, 2022
Radial magnetic circuit assembly device and radial magnetic circuit assembly method
Shenzhen grandsun electronic co ltd0 citations50
US10735864B2Aug 4, 2020
Speaker
Shenzhen grandsun electronic co ltd0 citations39
US10694294B2Jun 23, 2020
Metal diaphragm and speaker
Shenzhen grandsun electronic co ltd0 citations39
US10667058B2May 26, 2020
Diaphragm and speaker
Shenzhen grandsun electronic co ltd0 citations39