US2897162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble organic nitrogen compounds
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1954-08-05
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Granted: 1959-07-28
•
Expires: 1974-08-05
Abstract
No abstract record available.
Inventors
- 👤 Lowe Arthur
- 👤 Moyse James Albert
- 👤 Wooler Alan Metcalf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:22
CPC Classifications
C; C07; C07C; C07C279/00; C07C279/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
WATER-SOLUBLE ORGANIC NITROGEN COMPOUNDS OBTAINED BY HEATING TOGETHER IN THE ABSENCE OF WATR AND AT A TEMPERATURE BETWEEN 70* AND 200*C., WITH EVOLUTION OF AMMONIA, (1) AND N-SUBSTITUTED DICYANDIAMIDE SELECTED FROM THE GROUP CONSISTING OF DICYANDIAMIDES OF THE FORMULA
Claim 2
Dependent Claim
39 words
WATER-SOLUBLE ORGANIC NITROGEN COMPOUNDS OBTAINED BY HEATING TOGETHER IN THE ABSENCE OF WATR AND AT A TEMPERATURE BETWEEN 70* AND 200*C., WITH EVOLUTION OF AMMONIA, (1) AND N-SUBSTITUTED DICYANDIAMIDE SELECTED FROM THE GROUP CONSISTING OF DICYANDIAMIDES OF THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |