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:
Sep. 17, 2013
Filed:
Feb. 24, 2004
Boris Y. Shekunov, Aurora, OH (US);
Pratibhash Chattopadhyay, North Royalton, OH (US);
Jeffrey S. Seitzinger, Broadview Heights, OH (US);
Robert W. Huff, North Royalton, OH (US);
Boris Y. Shekunov, Aurora, OH (US);
Pratibhash Chattopadhyay, North Royalton, OH (US);
Jeffrey S. Seitzinger, Broadview Heights, OH (US);
Robert W. Huff, North Royalton, OH (US);
Ferro Corporation, Cleveland, OH (US);
Abstract
The present invention provides methods and apparatus for producing particles via supercritical fluid processing. In one embodiment, the method includes expanding a supercritical fluid plasticized melt across a pressure drop to form solid composite particles that are simultaneously dispersed, foamed and cooled, and milling the solid particles produced to achieve the desired size distribution. In another embodiment, a pressure vessel containing a supercritical fluid plasticized melt is depressurized to form a cooled solid porous mass, which is then milled to obtain solid composite particles.