Patent US3748135A successfully refreshed from Google Patents.
US3748135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoimaging processes and compositions
Assignee: Wyeth Holdings LLC
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Filing: 1972-05-18
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Granted: 1973-07-24
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Expires: 1992-05-18
Abstract
Abstract DRY PHOTOIMAGING PROCESSES AND COMPOSITIONS EMPLOYING PHOTOSENSITIVE COATINGS OF A VOLATILE PERI-SUBSTITUTED AROMATIC AZIDO COMPOUND A SPIN-ORBITAL COUPLING AGENT IN A PERMEABLE FILM-FORMING PLASTIC ARE DISCLOSED.
Inventors
- 👤 B Singh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:39
CPC Classifications
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |