US3753919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light source comprising peraminoethylenes on porous particulate supports
Assignee: EIDP Inc
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Filing: 1964-12-28
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Granted: 1973-08-21
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Expires: 1984-12-28
Abstract
Abstract OXYLUMINESCENT LIGHT SOURCE OF SOME RENEWABILITY COMRPISING INERT, SOLID PARTICULATE SUPPORTS CAPABLE OF BEIGN CRUSHED UNDERFOOT AND OF ABOUT 0.05-/.2 INCH AVERAGE PARTICLE SIZE, E.G., VERMICULITE OR URETHANE FOAM, IMPREGNATED WITH A TETRAKIS(DISUBISTITUTED-AMINO)ETHYLENE, E.G., TETRAKIS(DIMETHYLAMINO)ETHYLENE.
Inventors
- 👤 E Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:40
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/06; C09K11/07; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |