Inventor
OKAMI HIDEHARU
JP12 patents
⚠️ This page may combine multiple inventors who share the name “OKAMI HIDEHARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO METAL MINING CO
11 patentsUS7239464B2Jul 3, 2007
Absorption type multi-layer film ND filter
SUMITOMO METAL MINING CO10 citations83
US7666527B2Feb 23, 2010
Absorption type multi-layer film ND filter
SUMITOMO METAL MINING CO6 citations73
US11261520B2Mar 1, 2022
Roll-to-roll surface treatment device, and film deposition method and film deposition device using same
SUMITOMO METAL MINING CO0 citations60
US7894148B2Feb 22, 2011
Absorption type multi-layer film ND filter and process for producing the same
SUMITOMO METAL MINING CO2 citations60
US12448325B2Oct 21, 2025
Optical film, sputtering target, and method of producing optical film
SUMITOMO METAL MINING CO0 citations49
US12297528B2May 13, 2025
Optical film, sputtering target, and method of producing optical film
SUMITOMO METAL MINING CO0 citations49
US11352697B2Jun 7, 2022
Apparatus for processing long base material by roll-to-roll method and film forming apparatus using the same
SUMITOMO METAL MINING CO0 citations49
US7734121B2Jun 8, 2010
Bidirectional optical module
SUMITOMO METAL MINING CO1 citations46
US10764997B2Sep 1, 2020
Laminate film and electrode substrate film, and method of manufacturing the same
SUMITOMO METAL MINING CO0 citations39
US10752985B2Aug 25, 2020
Laminate film and electrode substrate film, and method of manufacturing the same
SUMITOMO METAL MINING CO0 citations39
US10026524B2Jul 17, 2018
Electrode substrate film and method of manufacturing the same
SUMITOMO METAL MINING CO0 citations39