US3214382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for incorporating phosphorescent triplet state organic compounds in plastic media
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1962-09-26
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Granted: 1965-10-26
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Expires: 1982-09-26
Abstract
No abstract record available.
Inventors
- 👤 Maurice W Windsor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:47
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/01; C08F; C08F2/00; C08F2/44; C08F265/00; C08F265/04; C08F265/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
THE METHOD OF MANUFACTURING AN ARTICLE CONSISTING ESSENTIALLY OF A TRIPLET STATE ORGANIC COMPOUND IN SOLID SOLUTION WITH A TRANSPARENT CROSS-LINKED PLASTIC, SAID METHOD COMPRISING: PARTIALLY POLYMERIZING A MONOMER OF AN ALKYL METHACRYLATE PLASTIC TO A SYRUP, INTRODUCING A TRIPLET STATE ORGANIC COMPOUND INTO SAID SYRUP TO FORM A HOMOGENEOUS SOLUTION, AND CURING SAID SOLUTION TO FURTHER POLYMERIZE AND CROSS-LINKED SAID PLASTIC TO A DEGREE BELOW THAT WHICH CAUSES SAID PLASTICS TO LOSE IT TRANSPARENCY, SAID TRIPLET STATE COMPOUND BEING AN AROMATIC, CONDENSED RING, POLYNUCLEAR HYDROCARBON EXHIBITING TRIPLET STATE EFFECT IN COMBINATION WITH SAID CROSS-LINKED PLASTIC.
Claim 2
Independent Claim
96 words
THE METHOD OF MANUFACTURING AN ARTICLE CONSISTING ESSENTIALLY OF A TRIPLET STATE ORGANIC COMPOUND IN SOLID SOLUTION WITH A TRANSPARENT CROSS-LINKED PLASTIC, SAID METHOD COMPRISING: PARTIALLY POLYMERIZING A MONOMER OF AN ALKYL METHACRYLATE PLASTIC TO A SYRUP, INTRODUCING A TRIPLET STATE ORGANIC COMPOUND INTO SAID SYRUP TO FORM A HOMOGENEOUS SOLUTION, AND CURING SAID SOLUTION TO FURTHER POLYMERIZE AND CROSS-LINKED SAID PLASTIC TO A DEGREE BELOW THAT WHICH CAUSES SAID PLASTICS TO LOSE IT TRANSPARENCY, SAID TRIPLET STATE COMPOUND BEING AN AROMATIC, CONDENSED RING, POLYNUCLEAR HYDROCARBON EXHIBITING TRIPLET STATE EFFECT IN COMBINATION WITH SAID CROSS-LINKED PLASTIC.
References Cited (Backward Citations)
US2650309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |