US2761846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scotophor and method of making same
Assignee: Lanteris Space LLC
•
Filing: 1952-05-28
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Granted: 1956-09-04
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Expires: 1972-05-28
Abstract
No abstract record available.
Inventors
- 👤 David B Medved
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:26
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/14; C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2892; C09; C09K; C09K9/00; G; G03; G03C; G03C1/00; G03C1/72; G03C1/725
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
80 words
A SCOTOPHOR HAVING THE BASIC CHEMICAL COMPOSITION NA6AL6SI6024 2NAC1 WITH THE CUBIC LATTICE STRUCTURE OF SODALITE, AND CONTAINING ABOUT 1% OF CADMIUM OXIDE SAID SUBSTANCE ASSUMING A MAGENTA TENEBRESCENT DARKENING VISIBLE IN ORDINARY LIGHT UPON EXPOSURE TO RADIATION HAVING A WAVE LENGTH OF 2537 A. WHICH DARKENING IS RETAINED AFTER SAID EXPOSURE, IS REMOVABLE BY HEATING TO 300* C., AND IS AGAIN OBTAINABLE, EVEN AFTER HEATING TO 300* C., UPON EXPOSURE TO RADIATION HAVING A WAVE LENGTH OF 2537 A.
Claim 2
Dependent Claim
80 words
A SCOTOPHOR HAVING THE BASIC CHEMICAL COMPOSITION NA6AL6SI6024 2NAC1 WITH THE CUBIC LATTICE STRUCTURE OF SODALITE, AND CONTAINING ABOUT 1% OF CADMIUM OXIDE SAID SUBSTANCE ASSUMING A MAGENTA TENEBRESCENT DARKENING VISIBLE IN ORDINARY LIGHT UPON EXPOSURE TO RADIATION HAVING A WAVE LENGTH OF 2537 A. WHICH DARKENING IS RETAINED AFTER SAID EXPOSURE, IS REMOVABLE BY HEATING TO 300* C., AND IS AGAIN OBTAINABLE, EVEN AFTER HEATING TO 300* C., UPON EXPOSURE TO RADIATION HAVING A WAVE LENGTH OF 2537 A.
Claim 3
Independent Claim
14 words
THE METHOD OF CONVERTING A NATURAL OR SYNTHETIC SODALITE HAVING THE BASIC CHEMICAL COMPOSITION
Claim 4
Independent Claim
14 words
THE METHOD OF CONVERTING A NATURAL OR SYNTHETIC SODALITE HAVING THE BASIC CHEMICAL COMPOSITION
References Cited (Backward Citations)
US2196082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |