US2661373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain amino alcohols and ketones
Assignee: Individual
•
Filing: 1953-03-02
•
Granted: 1953-12-01
•
Expires: 1973-03-02
Abstract
No abstract record available.
Inventors
- 👤 Kulz Ida
- 👤 Kulz Annemarie
- 👤 Kulz Walburga
- 👤 Lehmann Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:51
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/44; C07D317/46; C07D317/48; C07D317/50; C07D317/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
AN ARALKYLAMINO ALKANE PRODUCT OF THE GROUP CONSISTING OF THE ACID ADDITION SALTS AND FREE BASE REPRESENTED BY THE GENERAL FORMULA FOR THE BASE
Claim 2
Dependent Claim
24 words
AN ARALKYLAMINO ALKANE PRODUCT OF THE GROUP CONSISTING OF THE ACID ADDITION SALTS AND FREE BASE REPRESENTED BY THE GENERAL FORMULA FOR THE BASE
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) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |