Patent US3337342A successfully refreshed from Google Patents.
US3337342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic developing agents
Assignee: Polaroid Corp
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Filing: 1965-05-26
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Granted: 1967-08-22
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Expires: 1985-05-26
Abstract
No abstract record available.
Inventors
- 👤 Green Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:14
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C8/00; G03C8/02; G03C8/04; G03C8/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A PHOTOGRAPHIC DEVELOPER COMPOSITION COMPRISING WATER, 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
29 words
A PHOTOGRAPHIC DEVELOPER COMPOSITION COMPRISING WATER, 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)
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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |