Patent US2657683A successfully refreshed from Google Patents.
Patent US2908874A successfully refreshed from Google Patents.
Patent JPS5218482A successfully refreshed from Google Patents.
JPS5218482A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Blue luminescent composition
Assignee: Dai Nippon Toryo Co Ltd
•
Filing: 1975-08-02
•
Granted: —
•
Expires: 1995-08-02
Abstract
Abstract PURPOSE: A blue luminescent composition comprising a mixture of an Ag-activated zinc sulfide fluorescent substance and a gallium oxide-zinc oxide fluorescent substance in a specified ratio by weight. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Takashi Hase
- 👤 Akihiko Yoshinami
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-10-24 15:06
CPC Classifications
—
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.