Patent US3260456A successfully refreshed from Google Patents.
US2901436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Red luminescent material
Assignee: US Philips Corp
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Filing: 1954-09-16
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Granted: 1959-08-25
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Expires: 1974-09-16
Abstract
No abstract record available.
Inventors
- 👤 Klasens Hendrik Anne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:57
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A RED LUMINESCENT MATERIAL CONSISTING ESSENTIALLY OF AW MAGNESIUM LITHIUM ARSENATE ACTIVATED BY MANGANESE OF CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
19 words
A RED LUMINESCENT MATERIAL CONSISTING ESSENTIALLY OF AW MAGNESIUM LITHIUM ARSENATE ACTIVATED BY MANGANESE OF CORRESPONDING TO THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |