GB406957A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Fluorescent material
Assignee: Siemens Reiniger Werke AG
•
Filing: 1933-11-08
•
Granted: —
•
Expires: 1953-11-08
Abstract
Abstract 406,957. Fluorescent screens. SIEMENS-REINIGER-WERKE AKT.-GES., 31, Karlstrasse, Berlin. Nov. 8, 1933, No. 31122. Convention date, Oct. 24. [Class 98 (i).] Fluorescent screens with little or no afterglow are formed from zinc sulphide or zinc cadmium sulphide with a nickel content of the order of one part of nickel to two million parts of zinc sulphide and not exceeding two parts in a million.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 01:52
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/60; C09K11/602; C09K11/605
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.