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:
Jul. 11, 1995
Filed:
Apr. 28, 1994
Laszlo Kozma, Budapest, HU;
Sandor Kovats, Budapest, HU;
Bela Makadi, Debrecen, HU;
Laszlo Cseke, Debrecen, HU;
Sandor Pusztai, Debrecen, HU;
Mihaly Kaszas, Debrecen, HU;
Gyorgy Santha, Debrecen, HU;
Istvan Bartho, Budapest, HU;
Karoly Zalai, Budapest, HU;
Gyula Beszedics, Budapest, HU;
Gabriella Kordik, Budapest, HU;
Karoly Gergely, Budapest, HU;
Miklos Feder, Budapest, HU;
Richter Gedeon Vegyeszeti Gyar Rt., Budapest, HU;
Abstract
A mixing device, especially for a fermenter, capable of dispersing gas in a broth therein, in which a number of propeller mixers are provided on a vertically extending shaft. The lower propeller mixer is a gas dispersing mixer having a hollow hub and open channels on the blades extending from this hub and tapering outwardly. At least one intermediate propeller mixer has some blades shorter than others and of reverse flow direction, some blades having baffle bars on trail edges thereof. The upper propeller mixer has the longer blades without channels and flow modifying elements.