US3359226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for production of a moldable photochromic composition
Assignee: Wyeth Holdings LLC
•
Filing: 1964-09-24
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Granted: 1967-12-19
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Expires: 1984-09-24
Abstract
No abstract record available.
Inventors
- 👤 Giddings Sydney Arthur
- 👤 Patella Lawrence Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:34
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/733; C; C08; C08K; C08K5/00; C08K5/56; C08L; C08L67/00; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A METHOD FOR THE PRODUCTION OF A MOLDABLE PHOTOCHROMIC COMPOSITION OF MATTER WHICH COMPRISES INTIMATELY BLENDING A POLYMER, A SOLVENT THEREFOR AND A METAL COMPOUND HAVING THE FORMULA
Claim 2
Independent Claim
28 words
A METHOD FOR THE PRODUCTION OF A MOLDABLE PHOTOCHROMIC COMPOSITION OF MATTER WHICH COMPRISES INTIMATELY BLENDING A POLYMER, A SOLVENT THEREFOR AND A METAL COMPOUND HAVING THE FORMULA
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |