Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12130081 | Multistage liquid storage-type condenser-evaporator and nitrogen production device using the same | — | 2024-10-29 |
| 10569190 | Packed column | Takeyuki Ito | 2020-02-25 |
| 10408535 | Multistage bath condenser-reboiler | — | 2019-09-10 |
| 7297237 | Method and device for separation and concentration by evaporation of mixture with separation factor of approx. 1 | Koichi Asano, Shigeru Hayashida, Hiroshi Kawakami | 2007-11-20 |
| 6461583 | Method for enrichment of heavy component of oxygen isotopes | Shigeru Hayashida, Hitoshi Kihara, Hiroshi Kawakami | 2002-10-08 |