US2548155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of amides
Assignee: Goodrich Corp
•
Filing: 1948-10-02
•
Granted: 1951-04-10
•
Expires: 1968-10-02
Abstract
No abstract record available.
Inventors
- 👤 Thomas L Gresham
- 👤 Forrest W Shaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:47
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
THE METHOD WHICH COMPRISES BRINGING TOGETHER IN WATER SOLUTION A BETA-LACTONE OF THE STRUCTURE
Claim 2
Independent Claim
14 words
THE METHOD WHICH COMPRISES BRINGING TOGETHER IN WATER SOLUTION A BETA-LACTONE OF THE STRUCTURE
References Cited (Backward Citations)
US2375005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |