US2541089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing n-alkyl-substituted n-beta alkanolamines
Assignee: BURTON T BUSH Inc
•
Filing: 1946-12-05
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Granted: 1951-02-13
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Expires: 1966-12-05
Abstract
No abstract record available.
Inventors
- 👤 Nikawitz Edward Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:57
CPC Classifications
A; A01; A01N; A01N33/00; A01N33/02; A01N33/08; D; D06; D06M; D06M13/00; D06M13/322; D06M13/368; D06M16/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
THE PROCESS FOR PREPARING COMPOUNDS HAVING THE FORMULA,
Claim 2
Dependent Claim
8 words
THE PROCESS FOR PREPARING COMPOUNDS HAVING THE FORMULA,
References Cited (Backward Citations)
US1836047A
Cited
US1836048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |