US3704231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemiluminescent additives
Assignee: Wyeth Holdings LLC
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Filing: 1971-02-16
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Granted: 1972-11-28
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Expires: 1991-02-16
Abstract
Abstract A CHEMILUMINESCENT SYSTEM HAVING AS A CHEMILUMINESCENT REACTANT (1) AROMATIC OXALIC-TYPE ESTERS OR (2) GLYOXAL-TYPE COMPOUNDS, WHICH REACT WITH A HYDROPEROXIDE TO PRODUCE CHEMILUMINESCENT LIGHT IN THE PRESENCE OF A FLUORESCER, THE SYSTEM INCLUDING AS AN ADDITIVE NEUTRAL AND BASIC SALTS HAVING CATIONS FROM THE GROUP OF ALKALI METAL, TETRAALKYL AND TETRAALYL AMMONIUM, ARSENIUM AND PHOSPHONIUM CATIONS WHICH GIVE IMPROVED BRIGHTNESS AND QUANTUM YIELD TO THE SYSTEM.
Inventors
- 👤 Laszlo Joseph Bollyky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:49
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/06; C09K11/07
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |