| Invention or discovery | Inventor or discoverer | Type |
|---|---|---|
| Collapsible seat | Armando Salati | sanitary engineering |
| Han Yuan Volume 30 | Katsumi Kuroita | Kotenseki |
| Protactinium | Kazimierz Fajans | chemical element |
| Zingerone | Hiroshi Nomura | type of chemical entity |
| Invention or discovery | Inventor or discoverer | Type |
|---|---|---|
| Collapsible seat | Armando Salati | sanitary engineering |
| Han Yuan Volume 30 | Katsumi Kuroita | Kotenseki |
| Protactinium | Kazimierz Fajans | chemical element |
| Zingerone | Hiroshi Nomura | type of chemical entity |