US2542937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
beta-naphthyl-(2)-alpha:alpha-dialkyl-beta-alkyl propionaldehydes and corresponding propanols
Assignee: CIBA PHARM PROD Inc
•
Filing: 1949-09-06
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Granted: 1951-02-20
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Expires: 1969-09-06
Abstract
No abstract record available.
Inventors
- 👤 Miescher Karl
- 👤 Wieland Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:50
CPC Classifications
C; C07; C07C; C07C33/00; C07C33/18; C07C29/00; C07C29/132; C07C29/136; C07C29/147; C07C39/00; C07C39/12; C07C39/14; C07C45/00; C07C45/41; C07C45/61; C07C45/67; C07C45/673; C07C47/00; C07C47/20; C07C47/228; C07C47/23; C07C47/26; C07C47/27; C07C47/277
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |