Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5391433 | Carbon material for electrodes and process for preparing it | Takamasa Kawakubo | 1995-02-21 |
| 5380422 | Micro-electrode and method for preparing it | Akira Negishi, Hiroko Kaneko, Takamasa Kawakubo | 1995-01-10 |
| 5376251 | Carbon micro-sensor electrode and method for preparing it | Hiroko Kaneko, Masahiro Yamada, Akira Negishi, Takamasa Kawakubo | 1994-12-27 |
| 5281319 | Carbon micro-sensor electrode and method for preparing it | Hiroko Kaneko, Masahiro Yamada, Akira Negishi, Takamasa Kawakubo | 1994-01-25 |
| 5218757 | Tapered carbon microelectrode and process for production thereof | Hiroko Kaneko, Masahiro Yamada, Yukifumi Shigematsu, Wataru Mizutani, Akira Negishi +1 more | 1993-06-15 |
| 5152938 | Process for preparation of a wholly carbonaceous diaphragm for acoustic equipment use | — | 1992-10-06 |
| 5149470 | Method of making a diaphragm of carbonaceous material | — | 1992-09-22 |
| 4975318 | Improved acoustic carbon diaphragm | — | 1990-12-04 |
| 4959185 | Process for producing acoustic carbon diaphragm | — | 1990-09-25 |
| 4950443 | Process for producing carbon product with coarse and dense structure | Takamasa Kawakubo, Mitsuru Yoshida | 1990-08-21 |
| 4919859 | Process of making an acoustic carbon diaphragm | — | 1990-04-24 |
| 4916292 | Coiled resistance heating element of carbonaceous material | Takamasa Kawakubo, Mitsuru Yoshida | 1990-04-10 |
| 4904326 | Process of making a hollow structure of carbon material | — | 1990-02-27 |
| 4894215 | Process for producing porous materials of carbon | Takamasa Kawakubo, Mitsuru Yoshida | 1990-01-16 |
| 4882102 | Process for producing hard carbonaceous sheets | Takamasa Kawakubo, Mitsuru Yoshida | 1989-11-21 |
| 4882103 | Process for producing carbon product having coarse and dense structure | Takamasa Kawakubo, Mitsuru Yoshida | 1989-11-21 |