US3206418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of polymerizing and foaming a lactam containing a novel cocatalyst
Assignee: EIDP Inc
•
Filing: 1963-03-21
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Granted: 1965-09-14
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Expires: 1983-03-21
Abstract
No abstract record available.
Inventors
- 👤 John W Giberson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:40
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/16; C08G69/18; C08G69/20; C08J2377/00; C08J2377/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
IN THE PROCESS THE POLYMERIZATION OF LACTAMS TO POLYAMIDES IN THE PRESENCE OF LACTAM-BASE SALTS, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID POLYMERIZATION IN THE PRESENCE OF A COCATALYST HAVING THE FORMULA
Claim 2
Dependent Claim
32 words
IN THE PROCESS THE POLYMERIZATION OF LACTAMS TO POLYAMIDES IN THE PRESENCE OF LACTAM-BASE SALTS, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID POLYMERIZATION IN THE PRESENCE OF A COCATALYST HAVING THE FORMULA
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |