US2558020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic esters of 2-aryl-2-(1-hydroxycyclohexyl) ethanoic acid and acid addition salts of the same
Assignee: Schieffelin and Co
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Filing: 1949-05-20
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Granted: 1951-06-26
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Expires: 1969-05-20
Abstract
No abstract record available.
Inventors
- 👤 Gino R Treves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:51
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/20; C07D211/22; C07C; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF DIALKYLAMINO ALKYL ESTER OF 2-ARYL-2-(1HYDROXYCYLOHEXYL) ETHANOIC ACID AND ITS ACID ADDITION SALT, IN WHICH ARYL IS A RADICAL FROM THE GROUP CONSISTING OF PHENYL AND ALKOXPHENYL, SAID ALKYL AND ALKOXY GROUPS EACH CONTAINING UP TO SIX CARBON ATOMS.
Claim 2
Dependent Claim
46 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF DIALKYLAMINO ALKYL ESTER OF 2-ARYL-2-(1HYDROXYCYLOHEXYL) ETHANOIC ACID AND ITS ACID ADDITION SALT, IN WHICH ARYL IS A RADICAL FROM THE GROUP CONSISTING OF PHENYL AND ALKOXPHENYL, SAID ALKYL AND ALKOXY GROUPS EACH CONTAINING UP TO SIX CARBON ATOMS.
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) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |