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:
May. 03, 1994
Filed:
Jun. 26, 1992
Robert J Babacz, Bethlehem, PA (US);
Polar Materials, Inc., North Martins Creek, PA (US);
Abstract
In a method of treating a hollow article, a first gas substantially fills the inside of the article. A second gas including electrically charged species is provided on the outside of the article. The two gases are maintained separate from one another. The first gas is maintained is an electrically conductive state as, for example, in an ionized state. An electrical potential is applied to a first electrode in contact with the first gas. Because the first gas is conductive, this first potential is applied at the interior surfaces of the article and, therefore, influences the electrically charged species in the second gas on the outside of the article. The electrically charged species in the second gas interact with the exterior surfaces of the article under the influence of the electrical potential applied through the first gas. The second gas may be a plasma and a reactant may be introduced into the second gas so that reaction products are formed and deposited on the exterior surface of the article.