The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 1992
Filed:
Jun. 22, 1989
Shinjiro Mitsuda, Hasuda, JP;
Yoshiaki Matsuda, Sashima, JP;
Naoki Kobayashi, Ishibashi, JP;
Eitaro Kumazawa, Tochigi, JP;
Hideo Sakuma, Chiba, JP;
Snow Brand Milk Products Co., Ltd., Hokkaido, JP;
Abstract
Cell cultivation is carried out by proliferating cells in a small preliminary culture tank containing immobilizing carriers, stripping proliferated cells from the carriers, forming a cell suspension of the stripped cells in culture medium in an intermediate reservoir, intermittently transferring the suspension into a main culture tank containing ceramic immobilizing carriers and further culturing the cells. The main culture tank has an inversed funnel-shaped inlet above the carriers with a perforated plate attached to the bottom of the inlet for uniform distribution of cell suspension from above the carriers, and a plate in the form of a net under the carriers on a perforated plate for uniform distribution of cell suspension from beneath the carriers. The main tank additionally has a lid detachably carrying the inversed funnel-shaped inlet an intermediate drum-shaped portion from which the lid is detachable and a lower portion detachably carrying the plate in the form of a net and being detachable from the drum-shaped portion. The lower portion is held on or separated from the drum-shaped portion by means of a link mechanism and a cylinder capable of lowering the lower portion to separate it from the drum-shaped portion.