Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4908316 | Streptomyces sp. N664-30 which produces an ionophore antibacterial agent | Walter P. Cullen, Junsuke Tone, Hiroshi Maeda | 1990-03-13 |
| 4751317 | Inophore antibacterial agent from streptomyces | Walter P. Cullen, Junsuke Tone, Hiroshi Maeda | 1988-06-14 |
| 4287182 | Antibiotics produced by a new microbe, Catenuloplanes japonicus | Walter D. Celmer, Walter P. Cullen, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone | 1981-09-01 |
| 4247462 | Ansamycin antibiotic | Walter D. Celmer, Walter P. Cullen, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone | 1981-01-27 |
| 4225674 | Process for producing new ansamycin antibiotic | Walter D. Celmer, Walter P. Cullen, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone | 1980-09-30 |
| 4195079 | New polycyclic ether antibiotic | Walter D. Celmer, Walter P. Cullen, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone | 1980-03-25 |