US3749679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carboalkoxy substituted bis-phenyl oxalates as superior chemiluminescent materials
Assignee: Wyeth Holdings LLC
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Filing: 1971-03-15
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Granted: 1973-07-31
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Expires: 1991-03-15
Abstract
Abstract NEW COMPOUNDS WHICH ARE ESTER SUBSTITUTED BIS(ARYL) OXALATE ESTERS. THE COMPOUNDS ARE REACTIVE WITH HYDROGEN PEROXIDE IN THE PRESENCE OF A SOLVENT AND A FLUORESCER TO GIVE VISIBLE CHEMILUMINESCENT LIGHT.
Inventors
- 👤 M Rauhut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:39
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |