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:
Mar. 16, 1999
Filed:
Jun. 21, 1996
Barry W Manley, Boulder, CO (US);
Keith H Billings, Guelph, CA (US);
Sierra Applied Sciences, Inc., Boulder, CO (US);
Abstract
An AC plasma processing system according to the present invention may include a transformer for placing an alternating current on a first electrode and a second electrode contained within a process chamber. The secondary winding of the transformer is connected across the first and second electrodes. The primary winding of the transformer is connected to an external power supply. A switching device connected to the primary winding of the transformer periodically short circuits the primary winding to induce a secondary voltage in the secondary winding that is less than the arcing voltage associated with the process chamber.