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:
Jun. 02, 1987
Filed:
Feb. 24, 1986
John S Song, Evanston, IL (US);
Other;
Abstract
A plant tissue culture vessel including a base and a mating cover wherein the base and cover include means for adjustably setting the gas exchange rate between the interior of the vessel and the ambient, and means for selectively defining a loose or tight fit between the cover and the base. The cover and base are made from a material that permits the transmission of light. A filter is provided between the mating parts of the cover and base to filter contaminants during all modes of relationship between the cover and the base. The filter is constructed from a foam urethane blank having a porosity capable of precluding the passage of dust, bacteria and virus and is formed as an endless member by being cut in strip form from a blank of material and thereafter longitudinally slit between the ends.