US3206462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary poly(oxyalkylene)alkylbis(diethylenetriamine) compounds
Assignee: Dow Chemical Co
•
Filing: 1962-10-31
•
Granted: 1965-09-14
•
Expires: 1982-10-31
Abstract
No abstract record available.
Inventors
- 👤 Leslie P Mccarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:40
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
4 words
COMPOUND OF THE FORMULA
References Cited (Backward Citations)
BE517147A
Cited
CA567527A
Cited
US2654785A
Cited
DE847900C
Cited
US2743294A
Cited
US2941004A
Cited
US2944902A
Cited
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 |