US2514955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of sulfamates
Assignee: Mathieson Chemical Corp
•
Filing: 1948-02-13
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Granted: 1950-07-11
•
Expires: 1968-02-13
Abstract
No abstract record available.
Inventors
- 👤 Kamlet Jonas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:00
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/087; C01B21/093; C01B21/0935; C01B21/096
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A PROCESS FOR THE MANUFACTURE OF SULFAMATES WHICH COMPRISES REACTING A LIQUID, ANHYDROUS TERTIARY AMINE, DEVOID OF HYDROXYL, AMINO OR IMINO GROUP SUBSTITUENTS, WITH FROM 0.05 TO 0.05 MOLES OF SULFUR TRIOXIDE PER MOLE OF TERITARY AMINE, REACTING THE RESULTANT MIXTURE OF ANHYDRO-N-SULFONIC ACID OF TERITARY AMINE AND TERTIARY AMINE WITH FROM ONE TO TWO MOLES OF ANHYDROUS AMMONIA PER MOLE OF SULFUR TRIOXIDE ORIGINALLY REACTED AND SEPARATING THE RESULTANT SULFAMATE SALT FROM TERTIARY AMINE.
References Cited (Backward Citations)
US1835841A
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US2232241A
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US2390648A
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US2408823A
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US2436658A
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US2426420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |