US3694408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic nitrogenous compounds and polymers thereof
Assignee: Imperial Chemical Industries Ltd
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Filing: 1970-09-21
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Granted: 1972-09-26
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Expires: 1990-09-21
Abstract
Abstract POLYMERISABLE COMPOSITIONS ARE DESCRIBED WHICH CONTAIN IN THE MOLECULE AT LEAST TWO GROUPS OF THE FORMULA *C-NH-CN LINKED TOGETHER THROUGH AN ORGANIC RESIDUE WHICH IS ITSELF COMPOSED OF SMALLER ORGANIC RESIDUES LINKED THROUGH GROUPING OF THE FORMULA *C-N(-CN)-C* IN PARTICULAR, THE COMPOSITIONS ARE THE PRODUCTS OF REACTION OF AN EXCESS OF A SALT OF AN ORGANIC BISCYANAMIDE OR POLYCYANAMIDE WITH AN ORGANIC DIHALOGENO OR POLYHALOGENO COMPOUND. THE COMPOSITION ARE VALUABLE FOR THE MANUFACTURE OF COATINGS, CASTING LAMINATES AND MOULDINGS.
Inventors
- 👤 John Hynds
- 👤 John Maddison Phillipson
- 👤 Edward Jervis Vickers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:50
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G73/00; C08G73/06; C08G73/0622; C08G73/0638; C08G73/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |