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. 11, 2007
Filed:
Dec. 16, 2003
Wayne Thomas Mcdermott, Fogelsville, PA (US);
Hoshang Subawalla, Macungie, PA (US);
Andrew David Johnson, Doylestown, PA (US);
Alexander Schwarz, Bethlehem, PA (US);
Wayne Thomas McDermott, Fogelsville, PA (US);
Hoshang Subawalla, Macungie, PA (US);
Andrew David Johnson, Doylestown, PA (US);
Alexander Schwarz, Bethlehem, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
Method for processing an article with a dense processing fluid in a processing chamber while applying ultrasonic energy during processing. The dense fluid may be generated in a separate pressurization vessel and transferred to the processing chamber, or alternatively may be generated directly in the processing chamber. A processing agent may be added to the pressurization vessel, to the processing chamber, or to the dense fluid during transfer from the pressurization vessel to the processing chamber. The ultrasonic energy may be generated continuously at a constant frequency or at variable frequencies. Alternatively, the ultrasonic energy may be generated intermittently.