Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5124474 | Process for commerical-scale crystallization and purification of tetrakis[3-]methane for stably obtaining beta crystals thereof | Noritsugu Narita | 1992-06-23 |
| 4885382 | Method of producing tetrakis[3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxymethyl]methane | Masayoshi Gohbayashi, Noritsugu Narita | 1989-12-05 |
| 4883902 | Method of producing tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxymethyl]methane | Masayoshi Gohbayashi, Noritsugu Narita | 1989-11-28 |