US2828291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous condensation products of a glycol, a diamine, and a urea or derivative thereof
Assignee: Monsanto Chemicals Ltd
•
Filing: 1953-06-29
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Granted: 1958-03-25
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Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 James H Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:31
CPC Classifications
C; C08; C08G; C08G71/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
THE RESINOUS CONDENATION PRODUCT OBTAINED BY HEATING TO A TEMPERATURE OF AT LEAST 90*C. A MIXTURE COMPRISING THE FOLLOWING REACTANTS: (1) A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
26 words
THE RESINOUS CONDENATION PRODUCT OBTAINED BY HEATING TO A TEMPERATURE OF AT LEAST 90*C. A MIXTURE COMPRISING THE FOLLOWING REACTANTS: (1) A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |