US2630455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chloro alkyl alkylene poly amino acids and method of producing same
Assignee: Individual
•
Filing: 1951-06-29
•
Granted: 1953-03-03
•
Expires: 1971-06-29
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Bersworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:22
CPC Classifications
C; C07; C07C; C07C231/00; C07C231/12; C07C229/00; C07C229/02; C07C229/04; C07C229/06; C07C229/10; C07C229/16; C07C231/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
CHLOROALKY POLYAMINO ACIDS CONFORMING TO THE FOLLOWING STRUCTURE:
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) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |