Patent US2554736A successfully refreshed from Google Patents.
US2554736A
Expired / Lapsed
US
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Tertiary aminoalkyl-iminodibenzyls
Assignee: —
•
Filing: —
•
Granted: 1951-05-29
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Expires: 1968-05-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:20
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/06; C07D223/00; C07D223/14; C07D223/18; C07D223/22; C07D223/24; C07D223/28; C07D401/12; C07D401/14; C07D413/00; C07D413/02; C07D413/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A FREE BASE AND ITS WATER SOLUBLE ACID ADDITION SALTS, SAID FREE BASE HAVING THE FORMULA:
Claim 2
Dependent Claim
24 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A FREE BASE AND ITS WATER SOLUBLE ACID ADDITION SALTS, SAID FREE BASE HAVING THE FORMULA:
References Cited (Backward Citations)
FR892034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |