US2518704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
o-and m-hydroxybenzamidobenzaldehydes and their acetals with lower alkanols and alkanediols
Assignee: EIDP Inc
•
Filing: 1948-03-06
•
Granted: 1950-08-15
•
Expires: 1968-03-06
Abstract
No abstract record available.
Inventors
- 👤 Martin Elmore Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:47
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/52; C07C47/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A COMPOUND TAKEN FROM THE GROUP CONSISTING OF THE ALDEHYDES REPRESENTED BY THE FORMULAE
Claim 2
Dependent Claim
14 words
A COMPOUND TAKEN FROM THE GROUP CONSISTING OF THE ALDEHYDES REPRESENTED BY THE FORMULAE
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) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |