US2836493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic shortstop concentrates
Assignee: Morton Chemical Co
•
Filing: 1956-07-02
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Granted: 1958-05-27
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Expires: 1976-07-02
Abstract
No abstract record available.
Inventors
- 👤 Kimura Shuji
- 👤 Jules N Stich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:17
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/268
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
A SHORTSTOP CONCENTRATE CONSISTING ESSENTIALLY OF WATER HAVING DISSOLVED THEREIN AMMONIUM BISULFATE AND SODIUM BISULFATE IN THE RATIO BETWEEN ABOUT 2.33 MOLES AND ABOUT 5.67 MOLES OF AMMONIUM BISULFATE PER MOLE OF SODIUM BISULFATE, THE SULFURIC ACID EQUIVALENT OF SAID CONCENTRATE BEING AT LEAST 100 GRAMS PER LITER.
References Cited (Backward Citations)
US2413365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |