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:
Apr. 12, 2011
Filed:
Nov. 20, 2006
Jouko Niemi, Pirkkala, FI;
Jarkko Tamminen, Tampere, FI;
Jouko Niemi, Pirkkala, FI;
Jarkko Tamminen, Tampere, FI;
Other;
Abstract
A method for industrial production of especially fine powders and mineral powders, where the material to be ground is mixed to a gas-solid matter suspension, which through acceleration nozzles () is led at least to two counter jets, which meet in grinding chamber () for further grinding of the powders. The ground gas-solid matter suspension is led in its turn by means of working gas at least to two intermediate containers ();() in the grinding circulation, in which containers the gas is removed from the mixture and into intermediate container () a certain quantity of solid matter is collected, which quantity is returned to be ground and led to the other container () and the said quantity is circulated through the grinding process among intermediate containers ();() until in some container the quality is established sufficient for removal off the process.