US3291749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo-luminescent composition consisting essentially of boric acid and fluorescein
Assignee: Triaxon Inc
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Filing: 1963-08-14
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Granted: 1966-12-13
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Expires: 1983-08-14
Abstract
No abstract record available.
Inventors
- 👤 Steerup James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:50
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/63
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
40 words
A PHOTO-LUMINESCENT COMPOSITION CONSISTING ESSEN-TIALLY OF A HOST COMPOUND FUSED WITH AN ACTIVATOR, SAID HOST COMPOUND BEING BORIC ACID CRYSTALS AND SAID ACTIVATOR BEING FLUORESCEIN, THE AMOUNT OF ACTIVATOR RANGING FROM 0.02% TO 0.1% BY WEIGHT OF THE HOST COMPOUND.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |