Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6644007 | Braiding yarn made of expanded graphite | Masaru Fujiwara | 2003-11-11 |
| 6568689 | Gland packing | Masaru Fujiwara | 2003-05-27 |
| 6502382 | Expanded graphite knitting yarn and a gland packing | Masaru Fujiwara | 2003-01-07 |