Inventor
Li yan-lu
CN19 patents
⚠️ This page may combine multiple inventors who share the name “Li yan-lu”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD
15 patentsUS10681824B1Jun 9, 2020
Waterproof circuit board and method for manufacturing the same
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD8 citations79
US9980386B1May 22, 2018
Flexible printed circuit board and method for manufacturing the same
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD9 citations77
US10349533B1Jul 9, 2019
Multilayer circuit board and method of manufacturing the same
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD4 citations70
US11672083B2Jun 6, 2023
Method of manufacturing composite circuit board
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD0 citations62
US11191168B2Nov 30, 2021
Method of manufacturing composite circuit board and composite circuit board
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD0 citations62
US11700698B2Jul 11, 2023
Method for manufacturing a circuit board
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD0 citations58
US11304312B2Apr 12, 2022
Method for manufacturing a circuit board
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD0 citations58
US11582859B2Feb 14, 2023
Method for manufacturing flexible circuit board
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD0 citations57
US11140769B1Oct 5, 2021
Flexible circuit board and method for manufacturing the same
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD1 citations57
US10660218B2May 19, 2020
Method of manufacturing multilayer circuit board
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD0 citations51
US10653015B2May 12, 2020
Multilayer circuit board and method of manufacturing the same
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD0 citations51
US11985764B2May 14, 2024
Circuit board and method for manufacturing the same
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD0 citations50
US12028976B2Jul 2, 2024
Board-to-board connection structure and method for manufacturing the same
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD0 citations45
US12120812B2Oct 15, 2024
Circuit board and method of manufacturing thereof
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD0 citations42
US10667402B2May 26, 2020
Embedded circuit board and method of making same
HONGQISHENG PREC ELECTRONICS QINHUANGDAO CO LTD0 citations35