NY

Naoki Yokoi

Mitsubishi Electric: 3 patents #164 of 2,499Top 7%
Sumitomo Electric Industries: 3 patents #364 of 3,885Top 10%
Overall (2003): #13,896 of 273,478Top 6%
4
Patents 2003

Issued Patents 2003

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6642142 Substrate cleaning method and method for producing an electronic device Toshihiko Nagai, Hiroshi Tanaka, Yasuhiro Asaoka, Seiji Muranaka 2003-11-04
6596630 Method of cleaning a silicon substrate after blanket depositing a tungsten film by dipping in a solution of hydrofluoric acid, hydrochloric acid, and/or ammonium hydroxide 2003-07-22
6586145 Method of fabricating semiconductor device and semiconductor device Hiroshi Tanaka, Yasuhiro Asaoka, Seiji Muranaka, Toshihiko Nagai 2003-07-01
6531381 Method and apparatus for cleaning semiconductor device and method of fabricating semiconductor device Yasuhiro Asaoka, Hiroshi Tanaka, Seiji Muranaka, Toshihiko Nagai 2003-03-11