US2729680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of methylenimines
Assignee: EIDP Inc
•
Filing: 1952-11-14
•
Granted: 1956-01-03
•
Expires: 1972-11-14
Abstract
No abstract record available.
Inventors
- 👤 Anderson John Lynde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:01
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
PROCESS OF PREPARING A METHYLENIMINE OF THE FORMULA R1R2CHN=CH2 FROM A TRIAZINE OF THE FORMULA
Claim 2
Dependent Claim
15 words
PROCESS OF PREPARING A METHYLENIMINE OF THE FORMULA R1R2CHN=CH2 FROM A TRIAZINE OF 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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |