US3022166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic products, processes and compositions
Assignee: Polaroid Corp
•
Filing: 1957-03-28
•
Granted: 1962-02-20
•
Expires: 1977-03-28
Abstract
No abstract record available.
Inventors
- 👤 Green Milton
- 👤 Myron S Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:18
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/04; G03C8/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
AS A PHOTOGRAPHIC DEVELOPER COMPOSITION FOR THE FORMATION OF SILVER TRANSFER PRINTS, AN AQUEOUS SOLUTION COMPRISING AN ALKALINE MATERIAL, A SILVER HALIDE SOLVENT, SAID SOLVENT BEING CAPABLE OF FORMING A SOLUBLE COMPLEX WITH SILVER HALIDE, AND AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS WITHIN THE FORMULAE:
Claim 2
Dependent Claim
50 words
AS A PHOTOGRAPHIC DEVELOPER COMPOSITION FOR THE FORMATION OF SILVER TRANSFER PRINTS, AN AQUEOUS SOLUTION COMPRISING AN ALKALINE MATERIAL, A SILVER HALIDE SOLVENT, SAID SOLVENT BEING CAPABLE OF FORMING A SOLUBLE COMPLEX WITH SILVER HALIDE, AND AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS WITHIN THE FORMULAE:
References Cited (Backward Citations)
US2713594A
Cited
US2515147A
Cited
US2610122A
Cited
US2670374A
Cited
US2735765A
Cited
US2704713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |