Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9493362 | DDR-type zeolite powder, and process for the production of DDR-type zeolite powder | Kenji Yajima | 2016-11-15 |
| 8377838 | Method for production of DDR type zeolite membrane | Tetsuya Uchikawa, Kenji Yajima, Toshihiro Tomita | 2013-02-19 |
| 8263516 | Method for manufacturing a structure provided with DDR zeolite membrane | Kenji Yajima, Toshihiro Tomita | 2012-09-11 |
| 7971729 | Separation membrane complex, and method for manufacturing the separation membrane complex | Akimasa Ichikawa, Toshihiro Tomita | 2011-07-05 |
| 7909917 | Porous structure with seed crystal-containing layer for manufacturing zeolite membrane, zeolite membrane, and method for manufacturing zeolite membrane | Kunio Nakayama, Kenji Yajima | 2011-03-22 |
| 6403201 | Substrate material for wiring and substrate material for printed circuit using the same | Tadashi Otagiri, Yoshitaka Tabuchi, Tomio Suzuki | 2002-06-11 |
| 5854156 | Granulated powder for producing silicon nitride sintered body | Toshihiko Honda | 1998-12-29 |
| 5635432 | High-strength silicon nitride sintered body | Toshihiko Honda | 1997-06-03 |