Inventor

LIU YUAN-KAI

TW3 patents

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

ASIA OPTICAL CO INC

2 patents

US6236504B1May 22, 2001

Method and device for adjusting eye range by means of displacements of prisms and ocular lenses

ASIA OPTICAL CO INC40 citations90

US6798950B2Sep 28, 2004

Instrument and method for aligning optical collimators

ASIA OPTICAL CO INC3 citations60

CHAANG HSIIEN ENTPR CO LTD

1 patent

USD469523SJan 28, 2003

Basin

CHAANG HSIIEN ENTPR CO LTD3 citations51