US2757091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic developer
Assignee: Individual
•
Filing: 1954-07-22
•
Granted: 1956-07-31
•
Expires: 1974-07-22
Abstract
No abstract record available.
Inventors
- 👤 Oretzky Isaac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:43
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
12 words
A PHOTOGRAPHIC DEVELOPING COMPOSITION CONTAINING THE FOLLOWING INGREDIENTS IN THE FOLLOWING PROPORTIONS:
Claim 2
Dependent Claim
12 words
A PHOTOGRAPHIC DEVELOPING COMPOSITION CONTAINING THE FOLLOWING INGREDIENTS IN THE FOLLOWING PROPORTIONS:
Claim 3
Dependent Claim
4 words
ELON GR 150 96
Claim 4
Dependent Claim
4 words
ELON GR 150 96
Claim 5
Dependent Claim
5 words
SODIUM SULFITE G 196 160
Claim 6
Dependent Claim
5 words
SODIUM SULFITE G 196 160
Claim 7
Dependent Claim
5 words
SODIUM BISULFITE G 7 3
Claim 8
Dependent Claim
5 words
SODIUM BISULFITE G 7 3
Claim 9
Dependent Claim
4 words
HYDROQUINONE GR 150 55
Claim 10
Dependent Claim
4 words
HYDROQUINONE GR 150 55
Claim 11
Dependent Claim
6 words
GLYEIN (PARAHYDROXYPHENYL GLYCINE) G 14 4
Claim 12
Dependent Claim
6 words
GLYEIN (PARAHYDROXYPHENYL GLYCINE) G 14 4
Claim 13
Dependent Claim
5 words
SODIUM CARBONATE GR 322 75
Claim 14
Dependent Claim
5 words
SODIUM CARBONATE GR 322 75
Claim 15
Dependent Claim
4 words
ACETONE GR 644 155
Claim 16
Dependent Claim
4 words
ACETONE GR 644 155
Claim 17
Dependent Claim
4 words
TRIETHANOLAMINE GR 644 155
Claim 18
Dependent Claim
4 words
TRIETHANOLAMINE GR 644 155
Claim 19
Dependent Claim
6 words
WATER TO MAKE ONE-HALF GALLON SOLUTION.
Claim 20
Dependent Claim
6 words
WATER TO MAKE ONE-HALF GALLON SOLUTION.
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) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |