US3341501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamides containing silane end groups
Assignee: Monsanto Co
•
Filing: 1963-05-31
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Granted: 1967-09-12
•
Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Ross M Hedrick
- 👤 Jr William R Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:29
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/16; C08G69/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
POLYCAPROLACTAM PREPARED BY A BASE-CATALYZED SUBSTANTIALLY ANHYDROUS ANIONIC POLYMERIZATION OF CAPROLACTAM CONDUCTED IN THE PRESENCE OF AN ORGANOSILICON COMPOUND CONTAINING (A) A SILANE RADICAL SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
30 words
POLYCAPROLACTAM PREPARED BY A BASE-CATALYZED SUBSTANTIALLY ANHYDROUS ANIONIC POLYMERIZATION OF CAPROLACTAM CONDUCTED IN THE PRESENCE OF AN ORGANOSILICON COMPOUND CONTAINING (A) A SILANE RADICAL SELECTED FROM THE GROUP CONSISTING OF
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |