US2965635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Norleucine derivatives and process for producing same
Assignee: Parke Davis and Co LLC
•
Filing: 1958-01-15
•
Granted: 1960-12-20
•
Expires: 1978-01-15
Abstract
No abstract record available.
Inventors
- 👤 Alexander M Moore
- 👤 Wald Horace A De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:10
CPC Classifications
C; C07; C07C; C07C245/00; C07C245/12; C07C245/14; C07C245/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
21 words
A COMPOUND OF THE CLASS CONSISTING OF A FREE BASE AND ITS ACID ADDITION SALTS, SAID FREE BASE HAVING THE FORMULA
Claim 2
Dependent Claim
21 words
A COMPOUND OF THE CLASS CONSISTING OF A FREE BASE AND ITS ACID ADDITION SALTS, SAID FREE BASE HAVING THE FORMULA
Claim 3
Dependent Claim
19 words
PROCESS FOT THE PRODUCTION OF 6-DIAZO-5-OXONORLEUCINE WHICH COMPRISES REACTING AN ACID ADDITION SALT OF 6-AMINO-5-OXONORLEUCINE WITH A DIAZOTIZING AGENT.
Claim 4
Dependent Claim
19 words
PROCESS FOT THE PRODUCTION OF 6-DIAZO-5-OXONORLEUCINE WHICH COMPRISES REACTING AN ACID ADDITION SALT OF 6-AMINO-5-OXONORLEUCINE WITH A DIAZOTIZING AGENT.
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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |