US2500517A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing butadiene copolymers
Assignee: Monsanto Chemicals Ltd
•
Filing: 1945-06-14
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Granted: 1950-03-14
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Expires: 1965-06-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Carswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
THE PROCESS OF CURING A SULFUR VULCANIZABLE RUBBERY CO-POLYMER OF BUTADIENE-1,3 AND ACRYLONITRILE WHICH COMPRISES HEATING THE CO-POLYMER WITHOUT SULFUR IN THE PRESENCE OF AT LEAST 2% ON THE COPOLYMER OF AN ETHER OF A METHYOL COMPOUND COMPRISING A FORMALDEHYDE ADDITION PRODUCT OF AN AMINO 1,3,5-TRIAZINE.
Claim 2
Dependent Claim
46 words
THE PROCESS OF CURING A SULFUR VULCANIZABLE RUBBERY CO-POLYMER OF BUTADIENE-1,3 AND ACRYLONITRILE WHICH COMPRISES HEATING THE CO-POLYMER WITHOUT SULFUR IN THE PRESENCE OF AT LEAST 2% ON THE COPOLYMER OF AN ETHER OF A METHYOL COMPOUND COMPRISING A FORMALDEHYDE ADDITION PRODUCT OF AN AMINO 1,3,5-TRIAZINE.
References Cited (Backward Citations)
US2277941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |