PS

Paul Stonehart

SA Stonehart Associates: 10 patents #1 of 13Top 8%
TK Tanaka Kikinzoku Kogyo K.K.: 9 patents #34 of 436Top 8%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Madison, CT: #73 of 375 inventorsTop 20%
🗺 Connecticut: #4,119 of 34,797 inventorsTop 15%
Overall (All Time): #473,791 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
5593934 Platinum alloy catalyst 1997-01-14
5523181 Polymer solid-electrolyte composition and electrochemical cell using the composition Masahiro Watanabe 1996-06-04
5480851 Process of preparing catalyst supporting highly dispersed metal particles Kazunori Tsurumi 1996-01-02
5374598 Process of preparing metal supported catalyst having high surface area Kazunori Tsurumi 1994-12-20
5350727 Process of preparing catalyst supporting highly dispersed platinum particles Kazunori Tsurumi 1994-09-27
5275999 Process of preparing catalyst supporting highly dispersed metal particles Kazunori Tsurumi, Haruko Sugimoto, Nobuo Yamamoto, Toshihide Nakamura 1994-01-04
5275998 Process of preparing catalyst supporting highly dispersed metal particles Kazunori Tsurumi, Haruko Sugimoto, Nobuo Yamamoto, Toshihide Nakamura 1994-01-04
5225391 Electrocatalyst for anode Nobuo Yamamoto, Kazunori Tsurumi, Toshihide Nakamura, Noriaki Hara 1993-07-06
5208207 Electrocatalyst Masahiro Watanabe, Nobuo Yamamoto, Toshihide Nakamura, Noriaki Hara, Kazunori Tsurumi 1993-05-04
5189005 Electrocatalyst and process of preparing same Masahiro Watanabe, Kazunori Tsurumi, Nobuo Yamamoto, Noriaki Hara, Toshihide Nakamura 1993-02-23
4407906 Fuel cell with Pt/Pd electrocatalyst electrode 1983-10-04