P

Inventor

OUNKAEW SIRIWANNA

TH4 patents
⚠️ This page may combine multiple inventors who share the name “OUNKAEW SIRIWANNA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

UTAC HEADQUARTERS PTE LTD

3 patents

PTT GLOBAL CHEMICAL PUBLIC CO LTD

1 patent