P

Inventor

KOSHIYAMA YOSHIKI

JP6 patents
⚠️ This page may combine multiple inventors who share the name “KOSHIYAMA YOSHIKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TOPPAN HOLDINGS INC

3 patents
US12252318B2Mar 18, 2025

Gas-barrier laminate and packaging bag

TOPPAN HOLDINGS INC0 citations53
US12570439B2Mar 10, 2026

Gas-barrier multilayer body and packaging bag

TOPPAN HOLDINGS INC0 citations43
US12275567B2Apr 15, 2025

Gas barrier laminate and packaging bag

TOPPAN HOLDINGS INC0 citations43

TOPPAN PRINTING CO LTD

2 patents
US7940000B2May 10, 2011

Organic EL device panel and method for manufacturing the same

TOPPAN PRINTING CO LTD7 citations78
US11780978B2Oct 10, 2023

Gas barrier film

TOPPAN PRINTING CO LTD0 citations56

TOPPAN INC

1 patent
US12534585B2Jan 27, 2026

Gas barrier film and method for producing the same

TOPPAN INC0 citations47