Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4740408 | Ceramic honeycomb body | Masaru Kojima, Jun Kitagawa, Koichi Ikeshima | 1988-04-26 |
| 4598054 | Ceramic material for a honeycomb structure | Shunichi Yamada, Toshiyuki Hamanaka | 1986-07-01 |
| 4595662 | Ceramic material for a honeycomb structure | Shunichi Yamada, Toshiyuki Hamanaka | 1986-06-17 |
| 4556543 | Ceramic honeycomb catalytic converters having high thermal shock resistance | Masaru Kojima, Jun Kitagawa | 1985-12-03 |
| 4448828 | Ceramic honeycomb structural bodies | Masaru Kojima | 1984-05-15 |
| 4396664 | Ceramic honeycomb structural body | Masaru Kojima, Toshihiko Hijikata | 1983-08-02 |
| 4283210 | Ceramic honeycomb filter and a method of producing the same | Takayuki Ogasawara | 1981-08-11 |