Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4463112 | Phenylethylidene-substituted phenyl polyphosphites | William E. Leistner, Motonobu Minagawa, Yutaka Nakahara | 1984-07-31 |
| 4348308 | Ortho-substituted aryl phosphite additive composition | Motonobu Minagawa, Yutaka Nakahara | 1982-09-07 |
| 4346025 | Stabilized vinyl chloride polymer comprising a phenylethylidene aryl phosphite | William E. Leistner, Motonobu Minagawa, Yutaka Nakahara | 1982-08-24 |
| 4309335 | Polyphenylene oxide resin composition stabilizer | Mitsuo Akutsu, Yutaka Nakahara | 1982-01-05 |
| 4282141 | Ortho-substituted phenyl phosphite additive composition | Motonobu Minagawa, Yutaka Nakahara | 1981-08-04 |
| 4199495 | Thiolcarbonate ester stabilizers | Motonobu Minagawa, Yutaka Nakahara | 1980-04-22 |