Tissue culture flask
US5139952A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1991 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | Jul 8, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12M23/08
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A tissue culture flask includes a container main body comprising a box having a bottom surface for supporting a substance to be cultured, a side surface, and an upper surface. A cylindrical neck is provided on the side surface of the container main body to communicate with the interior of the container main body, and extends obliquely upward with respect to the bottom surface and defining a first opening at an end located away from the container main body and a second opening opposite the first opening. In the flask, (1) a first angle defined by (a) a first straight line connecting a given point on the bottom surface including an edge thereof and a given point on an edge of the first opening and (b) a second straight line on the inner circumferential wall and connecting a given point on an edge of the first opening and a given point on an edge of the second opening is not greater than (2) a second angle defined by (c) said second straight line and (d) the longest third straight line connecting a given point on an edge of the first opening and a given point on an edge of the second opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.