US2868786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of phenyl acetic acids and a process of making same
Assignee: Ravensberg GmbH
•
Filing: 1955-12-21
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Granted: 1959-01-13
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Expires: 1975-12-21
Abstract
No abstract record available.
Inventors
- 👤 Siemer Harm
- 👤 Kurzen Fritz
- 👤 Doppstadt Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:02
CPC Classifications
C; C07; C07D; C07D265/00; C07D265/28; C07D265/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
28 words
THE COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF ESTERS OF PHENYL ACETIC ACIDS WITH TETRAHYDRO-1, 4OXAZINE-N-ETHANOL COMPOUNDS AND THEIR ACID ADDITION SALTS, SAID ESTERS CORRESPONDING TO THE FORMULA
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) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |