US3287276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable mixture containing dithionites
Assignee: BASF SE
•
Filing: 1963-12-05
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Granted: 1966-11-22
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Expires: 1983-12-05
Abstract
No abstract record available.
Inventors
- 👤 Poschmann Franz
- 👤 Janson Alfons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:16
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/22; D06P1/221; C; C01; C01B; C01B17/00; C01B17/64; C01B17/66; C01B17/665; D06L; D06L4/00; D06L4/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A DRY MIXTURE CONSISTING ESSENTIALLY OF (A) 95 TO 99% BY WEIGHT OF A DITHIONITE SELECTED FROM THE GROUP CONSISTING OF SODIUM DITHIONITE AND ZINC DITHIONITE AND, AS A STABILIZER FOR SAID DITHIONITES TO PREVENT DECOMPOSITION UNDER THE INFLUENCE OF WATER AND MOISTURE, (B) 1 TO 5% BY WEIGHT OF A WATER-SOLUBLE, MACROMOLECULAR POLYMER CONTAINING THE FOLLOWING UNITS AS BUILDING BLOCKS:
Claim 2
Dependent Claim
61 words
A DRY MIXTURE CONSISTING ESSENTIALLY OF (A) 95 TO 99% BY WEIGHT OF A DITHIONITE SELECTED FROM THE GROUP CONSISTING OF SODIUM DITHIONITE AND ZINC DITHIONITE AND, AS A STABILIZER FOR SAID DITHIONITES TO PREVENT DECOMPOSITION UNDER THE INFLUENCE OF WATER AND MOISTURE, (B) 1 TO 5% BY WEIGHT OF A WATER-SOLUBLE, MACROMOLECULAR POLYMER CONTAINING THE FOLLOWING UNITS AS BUILDING BLOCKS:
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |