| Patent Number |
Title Of Patent |
Date Issued |
| 5169781 |
Continuous perfusion apparatus utilizing aeration |
December 8, 1992 |
| An apparatus for the continuous perfusion of a liquid in cell culture, hydroponic and breeding processes includes a container having a sealed lower portion and an open upper portion, a hollow tube having an upper end in the open upper portion and a lower end in the sealed lower portion o |
| 5156492 |
Underwater swimming apparatus |
October 20, 1992 |
| A plurality of containers are combined in a stepped manner into a container group. Each container opens downwardly. They are sunk under water and anchored to the bed of the sea. A notch is formed at a lower portion of a side wall of each container connected to the next container so as to |
| 5139657 |
Multiple-gas-phase settling tank |
August 18, 1992 |
| A multi-gas-phase settling tank has a plurality of containers mounted upside down in vertical spaced relation at fixed intervals for holding a predetermined quantity of gas under water. Each container has a flat horizontal wall, side walls extending downwardly therefrom, a vent port in |
| 5073311 |
Multiple-gas-phase liquid treatment apparatus |
December 17, 1991 |
| A multiple-gas-phase liquid treatment apparatus for use, for example, as a gas dissolving apparatus, gas removing apparatus, sewage treatment apparatus, or large-quantity culture apparatus includes a hollow container, a plurality of horizontal partition plates mounted in the hollow c |
| 5054422 |
Multi-layered gaseous phase cultivation |
October 8, 1991 |
| The present invention comprises tray-like shallow vats placed upside down and horizontally at intervals in a culture tank so as to provide partitioned air spaces in mid water. When gas is sent, via an air supply pipe, into an air space provided at the bottom vat, a good number of art |
