HO

Hiroyuki Oyokawa

NC Nihon Parkerizing Co.: 3 patents #22 of 330Top 7%
NS Nippon Steel & Sumikin Coated Sheet: 3 patents #3 of 34Top 9%
NM Nippon Steel & Sumitomo Metal: 2 patents #488 of 1,491Top 35%
Overall (All Time): #1,481,985 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10450468 Surface treatment composition for coated steel sheet, surface treated plated steel sheet and method of production of same, and coated plated steel sheet and method of production of same Shigeki Yamamoto, Tomohiro Iko, Eisuke Kudo, Hiromasa Nomura 2019-10-22
10053753 Aluminum-zinc plated steel sheet and method for producing the same Nobuki Shiragaki, Tomokazu Sugitani, Satoru Yonetani, Hiroshi Kanai, Nobuyuki Shimoda +2 more 2018-08-21
9133346 Surface-coated aluminum and zinc plated steel sheet and method of preparing same Nobuki Shiragaki, Tomokazu Sugitani, Satoru Yonetani, Hiroshi Kanai, Nobuyuki Shimoda +2 more 2015-09-15