JPS528994A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Luminous unit
Assignee: Hitachi Ltd
•
Filing: 1975-07-11
•
Granted: —
•
Expires: 1995-07-11
Abstract
Abstract PURPOSE: A luminous unit using a specified fluorescent substance giving emission of divalent Eu in a gas discharge cell and fluorescent lamp emitting photons of energy above 5 eV, that is, ultraviolet rays in the range shorter than 250 nm. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Shinkichi Tanimizu
- 👤 Yukio Ono
- 👤 Teruki Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-01 13:12
CPC Classifications
Y; Y02; Y02B; Y02B20/00
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.