Patent US3119790A successfully refreshed from Google Patents.
US3119790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of alpha-(n-aziridino) alcohols
Assignee: Hexion Inc
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Filing: 1960-07-29
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Granted: 1964-01-28
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Expires: 1980-07-29
Abstract
No abstract record available.
Inventors
- 👤 Kwan C Tsou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:09
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C07; C07D; C07D203/00; C07D203/04; C07D203/06; C07D203/08; C07D203/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
IN MAKING A POLYMER, THE PROCESS WHICH COMPRISES (A) FORMING AN ANHYDROUS MIXTURE OF AN IMINE OF THE FORMULA
Claim 2
Dependent Claim
19 words
IN MAKING A POLYMER, THE PROCESS WHICH COMPRISES (A) FORMING AN ANHYDROUS MIXTURE OF AN IMINE OF THE FORMULA
References Cited (Backward Citations)
US2272489A
Cited
US2296225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |