US3143548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu, nu'-dimethyl-nu'', nu''-bis (2-hydroxyethyl) melamine
Assignee: Individual
•
Filing: 1961-07-26
•
Granted: 1964-08-04
•
Expires: 1981-07-26
Abstract
No abstract record available.
Inventors
- 👤 Sidney L Vail
- 👤 Jr John G Frick
- 👤 John D Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:31
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
N,N'' - DIMETHYL - N",N" - BIS(2 - HYDROXYETHYL) MELAMINE.
Claim 2
Dependent Claim
10 words
N,N'' - DIMETHYL - N",N" - BIS(2 - HYDROXYETHYL) MELAMINE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |