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US3812052A
Expired / Lapsed
US
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Fluorescent composition containing a coumarone-indene resin
Assignee: Wyeth Holdings LLC
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Filing: 1970-12-18
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Granted: 1974-05-21
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Expires: 1990-12-18
Abstract
Abstract THIS INVENTION RELATES TO COMPOSITIONS OF MATTER USEFUL FOR MARKING AND INDENTIFICATION PURPOSES COMPRISING A SOLVENT, A FLUORESCENT MATERIAL AND A COUMARONE-INDENE RESIN AND THE METHOD OF MAKING AND IDENTIFYING OBJECTS THEREWITH.
Inventors
- 👤 N Weston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:51
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/06; C08; C08K; C08K5/00; C08K5/0008; C08K5/0041; C08K5/01; C08K5/16; C08K5/34; C08K5/36; C08K5/45; C08K5/46; C08K5/47; C09D; C09D11/00
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |