US3293034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkoxy hydroxylamines as photographic developers
Assignee: Polaroid Corp
•
Filing: 1963-06-26
•
Granted: 1966-12-20
•
Expires: 1983-06-26
Abstract
No abstract record available.
Inventors
- 👤 Green Milton
- 👤 Adnan A Sayigh
- 👤 Ulrich Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:39
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3014; C; C07; C07D; C07D211/00; C07D211/92; C07D211/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
AS A NEW DEVELOPER COMPOSITION, AN AQUEOUS SOLUTION COMPRISING AN ALKALINE MATERIAL, A SILVER HALIDE SOLVENT, AND A SILVER HALIDE DEVELOPING AGENT SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS WITHIN THE FORMULA:
Claim 2
Dependent Claim
32 words
AS A NEW DEVELOPER COMPOSITION, AN AQUEOUS SOLUTION COMPRISING AN ALKALINE MATERIAL, A SILVER HALIDE SOLVENT, AND A SILVER HALIDE DEVELOPING AGENT SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS WITHIN THE FORMULA:
References Cited (Backward Citations)
US2169976A
Cited
US2857276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |