Patent US2813857A successfully refreshed from Google Patents.
US2813857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-aminoalkylated substituted iminodi-
Assignee: —
•
Filing: —
•
Granted: 1957-11-19
•
Expires: 1974-11-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:54
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
A 5-DIMETHYLAMINOPROPYL-3,7-DICHLORO-IMINODIBENZYL.
Claim 2
Dependent Claim
2 words
A 5-DIMETHYLAMINOPROPYL-3,7-DICHLORO-IMINODIBENZYL.
References Cited (Backward Citations)
GB668659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |