US2921953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New substituted amino acid compounds and their preparation
Assignee: Phillips Petroleum Co
•
Filing: 1955-04-18
•
Granted: 1960-01-19
•
Expires: 1975-04-18
Abstract
No abstract record available.
Inventors
- 👤 Carl W Kruse
- 👤 Charles W Osborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:55
CPC Classifications
C; C07; C07C; C07C333/00; C07C333/14; C07C333/30; C07C333/32
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
THE COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
THE COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
15 words
A PROCESS COMPRISING REACTING AQUEOUS SODIUM HYDROXIDE, GLYCINE, AND CARBON DISULFIDE TO FORM THE COMPOUND
Claim 4
Dependent Claim
15 words
A PROCESS COMPRISING REACTING AQUEOUS SODIUM HYDROXIDE, GLYCINE, AND CARBON DISULFIDE TO FORM THE COMPOUND
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) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |