Inventor

CHANG LIN-HENG

TW3 patents

⚠️ This page may combine multiple inventors who share the name “CHANG LIN-HENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PORTWELL INC

2 patents

US9965661B2May 8, 2018

Sensory totem badge capable of transmitting individualized information

PORTWELL INC1 citations42

US10104550B2Oct 16, 2018

Induction type ornament with private message transmission

PORTWELL INC0 citations32

(unassigned)

1 patent

US6273730B1Aug 14, 2001

Industrial computer mainframe structure

23 citations82