US3146228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu, nu'-ethylene bis[p, p-bis(1-aziridinyl)-nu-methyl phosphinic amide] and homopolymer thereof
Assignee: Individual
•
Filing: 1962-03-15
•
Granted: 1964-08-25
•
Expires: 1982-03-15
Abstract
No abstract record available.
Inventors
- 👤 Leon H Chance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:34
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/553; C07F9/564; C08; C08G; C08G73/00; C08G73/02; C08G73/0246; C14; C14C; C14C11/00; C14C9/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
9 words
THE COMPOUND N,N''-ETHYLENE BIS(P,P-BIS(1-AZIRIDINYL)-N-METHYL PHOSPHINIC AAMIDE) HAVING THE FORMULA:
Claim 2
Dependent Claim
9 words
THE COMPOUND N,N''-ETHYLENE BIS(P,P-BIS(1-AZIRIDINYL)-N-METHYL PHOSPHINIC AAMIDE) HAVING THE FORMULA:
Claim 3
Dependent Claim
19 words
THE HOMOPOLYMER OF N,N''-ETHYLENE BIS(P,P-BIS(1AZIRIDINYL)-N-METHYL PHOSPHINIC AMIDE FORMED BY HEATING THE MONOMER AT A TEMPERATURE OF ABOUT FROM 100170*C.
Claim 4
Dependent Claim
19 words
THE HOMOPOLYMER OF N,N''-ETHYLENE BIS(P,P-BIS(1AZIRIDINYL)-N-METHYL PHOSPHINIC AMIDE FORMED BY HEATING THE MONOMER AT A TEMPERATURE OF ABOUT FROM 100170*C.
References Cited (Backward Citations)
CA558874A
Cited
US2802824A
Cited
US2886538A
Cited
US2901444A
Cited
US2971815A
Cited
US3038776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |