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:
Apr. 17, 1990
Filed:
May. 12, 1988
Applicant:
Inventors:
Norbert Thiel, Bad Sackingen, DE;
Rolf Zondler, Straubing-Ittling, DE;
Assignee:
Nokia Graetz, Pforzheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252511 ; 252502 ; 252506 ; 252510 ;
Abstract
A conductive suspension for making contact to the inside of a picture tube consists of graphite, glass-frit powder, a binder, such as nitrocellulose, a solvent, such as isoamyl acetate. It can be applied prior to or after the aluminizing process by various techniques, such as brushing, printing, or spraying, and permits the bake-out process and the frit-sealing process to be performed in one step because it is permeable to organic substances. It is easy to remove from defective tube parts by conventional cleansing techniques.