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:
Dec. 24, 2002
Filed:
Feb. 07, 2001
Alfred Baalmann, Osterholz-Scharmbeck, DE;
Otto-Diedrich Hennemann, Osterholz-Scharmbeck, DE;
Johannes Liebermann, Lichtenfels-Schönsreuth, DE;
Klaus Vissing, Morsum, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An electrical insulator is produced by coating a molded part of the insulator with a hydrophobic plasma-polymer coating. The plasma-polymer coating is produced by igniting a plasma in a non-polar working gas or a working gas having non-polar groups at a working pressure of between 0.001 Pa (1·10 mbar) and 50 Pa (5·10 mbar). The electrical power input per chamber volume lies between 0.5 and 5 kW/m , the gas flow per chamber volume lies between 10 and 1000 sccm/m . A durable, hard and hydrophobic plasma-polymer coating is created, the quality of which is independent of the material of the molded part.