US3769333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
L-aspartic acid derivatives
Assignee: Wyeth LLC
•
Filing: 1972-08-07
•
Granted: 1973-10-30
•
Expires: 1992-08-07
Abstract
Abstract DISCLOSED HEREIN ARE DERIVATIVES OF L-ASPARTIC ACID WHICH HAVE UTILITY AS ARTIFICIAL SWEETENER AGENTS. ALSO DISCLOSED IS A METHOD FOR PRODUCING SUCH DERIVATIVES.
Inventors
- 👤 M Lapidus
- 👤 Gettigan M Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:53
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/66; A; A23; A23L; A23L27/00; A23L27/30; A23L27/31; A23L27/32; Y; Y10; Y10S; Y10S530/00; Y10S530/801
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |