Patent US4969177A successfully refreshed from Google Patents.
Patent US2835713A successfully refreshed from Google Patents.
US2835713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chxch
Assignee: —
•
Filing: —
•
Granted: 1958-05-20
•
Expires: 1975-05-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:26
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C1/24; A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; C07C59/00; C07C59/01; C12; C12P; C12P7/00; C12P7/40; C12P7/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
THE METHOD WHICH COMPRISES TREATING A BETA-HYDROXY CARBOXYLIC ACID OF THE FORMULA
Claim 2
Independent Claim
12 words
THE METHOD WHICH COMPRISES TREATING A BETA-HYDROXY CARBOXYLIC ACID OF THE FORMULA
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |