US3752671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material containing photosensitive halo azido naphthalenes
Assignee: Wyeth Holdings LLC
•
Filing: 1972-08-02
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Granted: 1973-08-14
•
Expires: 1992-08-02
Abstract
Abstract NOVEL HALO AZIDO NAPHTHALENES AND DRY PHOTOIMAGING PROCESSES AND COMPOSITIONS EMPLOYING SAID NAPHTHALENES ARE DISCLOSED.
Inventors
- 👤 B Singh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:20
CPC Classifications
C; C07; C07C; C07C247/00; G; G03; G03C; G03C1/00; G03C1/695
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |