US2895994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing guanidine nitrate
Assignee: Teck Metals Ltd
•
Filing: 1956-05-17
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Granted: 1959-07-21
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Expires: 1976-05-17
Abstract
No abstract record available.
Inventors
- 👤 Robinson Joseph Newton
- 👤 Miller Frederick John Leslie
- 👤 Mcdonnell Basil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:40
CPC Classifications
C; C07; C07C; C07C279/00; C07C279/30; C07C279/32; C07C279/34; C07C277/00; C07C277/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A PROCESS FOR THE PRODUCTION OF GUANIDINE NITRATE IN WHICH AMMONIA, SULPHUR DIOXIDE, UREA AND AMMONIUM SULPHAMATE ARE REACTED TO PRODUCE A REACTION PRODUCT WHICH CONTAINS GUANIDINE SULPHAMATE, GUANIDINE SULPHAMATE IS SEPARATED FROM THE REACTION PRODUCT AND IS REACTED WITH NITRIC ACID TO FORM A REACTION PRODUCT WHICH CONTAINS GUANDINE NITRATE AND SULPHAMIC ACID, THE IMPROVEMENT WHICH COMPRISES SEPARATING AND SEPARATELY RECOVERING GUANDINE NITRATE AND SULPHAMIC ACID FROM THE GUANIDINE NITRATE-SULPHAMIC ACID REACTION PRODUCT, NEUTRALIZING RECOVERED SULPHAMIC, ANDF RE-CYCLING SO-FORMED AMMONIUM SULPHAMATE TO THE GUANIDINE SULPHAMATE FORMING STEP OF THE PROCESS.
Claim 2
Dependent Claim
92 words
IN A PROCESS FOR THE PRODUCTION OF GUANIDINE NITRATE IN WHICH AMMONIA, SULPHUR DIOXIDE, UREA AND AMMONIUM SULPHAMATE ARE REACTED TO PRODUCE A REACTION PRODUCT WHICH CONTAINS GUANIDINE SULPHAMATE, GUANIDINE SULPHAMATE IS SEPARATED FROM THE REACTION PRODUCT AND IS REACTED WITH NITRIC ACID TO FORM A REACTION PRODUCT WHICH CONTAINS GUANDINE NITRATE AND SULPHAMIC ACID, THE IMPROVEMENT WHICH COMPRISES SEPARATING AND SEPARATELY RECOVERING GUANDINE NITRATE AND SULPHAMIC ACID FROM THE GUANIDINE NITRATE-SULPHAMIC ACID REACTION PRODUCT, NEUTRALIZING RECOVERED SULPHAMIC, ANDF RE-CYCLING SO-FORMED AMMONIUM SULPHAMATE TO THE GUANIDINE SULPHAMATE FORMING STEP OF THE PROCESS.
References Cited (Backward Citations)
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Cited
US2698344A
Cited
US2653976A
Cited
GB705799A
Cited
US2762843A
Cited
US2768203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |