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Patent US2436658A successfully refreshed from Google Patents.
US2436658A
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US
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Process for producing sulfamic acid
Assignee: EIDP Inc
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Filing: 1945-04-07
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Granted: 1948-02-24
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Expires: 1965-04-07
Abstract
No abstract record available.
Inventors
- 👤 Howard S Mcquaid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:04
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/087; C01B21/093; C01B21/0935; C01B21/096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2102350A
Cited
US2191754A
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US2408492A
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US2390648A
Cited
US2409572A
Cited
US2408823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-23 | 1951-08-25 | 1952-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-23 | 1955-08-25 | 1956-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-23 | 1959-08-25 | 1960-02-24 | $7700.00 | Window Closed / Lapsed |