Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12212913 | Earphone device | Shinya Narisawa, Jun Shiroishi | 2025-01-28 |
| 9473844 | Headphones and ear pad | — | 2016-10-18 |
| 5188779 | Production of ceramic honeycomb structural bodies | Toshihiko Hijikata | 1993-02-23 |
| 5149264 | Method of producing ceramic products | Yukihisa Wada | 1992-09-22 |
| 5149475 | Method of producing a honeycomb structure | Koichi Ikeshima | 1992-09-22 |
| 5145539 | Method of producing a honeycomb structural body having at least one step protruded from or recessed in at least one portion of an outer circumferential surface thereof | Koichi Ikeshima | 1992-09-08 |
| 5098763 | Honeycomb structure | Koichi Ikeshima | 1992-03-24 |
| 5090473 | Ceramic rotary heat exchanger | Mikio Makino | 1992-02-25 |
| 5080953 | Honeycomb structural body and method of producing the same | Koichi Ikeshima | 1992-01-14 |
| 5073432 | Honeycomb structure and method of producing the same | Takashi Harada, Koichi Ikeshima | 1991-12-17 |