US3054658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally stabilized sodium hydrosulfite compositions
Assignee: EIDP Inc
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Filing: 1959-12-07
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Granted: 1962-09-18
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Expires: 1979-12-07
Abstract
No abstract record available.
Inventors
- 👤 Franklin Richard Crawford
- 👤 Stryker Harvey Irvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:55
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/64; C01B17/66; C01B17/665
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A SODIUM HYDRODSULFITE COMPOSITION STABILIZED AGAINST SPONTANEOUS THERMAL DECOMPOSITION BY MIXING WITH SAID SODIUM HYDROSULFITE FROM ABOUT 0.1% TO ABOUT 45% BY WEIGHT THEREOF OF A SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM SALTS OF A CARBOXYLIC ACID, SAID CARBOXYLIC ACID BEING SELECTED ROM THE GROUP CONSISTING OF AN ALKANOIC ACID OF 1 TO 10 CARBON ATOMS AND A BENZOIC ACID.
Claim 2
Dependent Claim
64 words
A SODIUM HYDRODSULFITE COMPOSITION STABILIZED AGAINST SPONTANEOUS THERMAL DECOMPOSITION BY MIXING WITH SAID SODIUM HYDROSULFITE FROM ABOUT 0.1% TO ABOUT 45% BY WEIGHT THEREOF OF A SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM SALTS OF A CARBOXYLIC ACID, SAID CARBOXYLIC ACID BEING SELECTED ROM THE GROUP CONSISTING OF AN ALKANOIC ACID OF 1 TO 10 CARBON ATOMS AND A BENZOIC ACID.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |