Patent US2710299A successfully refreshed from Google Patents.
US2710299A
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Process for the production of crystalline vanillyl amides
Assignee: Boehringer Ingelheim Pharma GmbH and Co KG
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Filing: 1951-10-22
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Granted: 1955-06-07
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Expires: 1971-10-22
Abstract
No abstract record available.
Inventors
- 👤 Kottler August
- 👤 Seeger Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:28
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/16; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A PROCESS FOR THE PRODUCTION OF VANILLYL AMIDES IN WHICH EXCESS GUAIACOL IS REACTED WITH A METHYLOL AMIDE OF AN ACID TAKEN FROM THE CLASS CONSISTING OF ALIPHATIC SATURATED AND UNSATURATED CARBOXYLIC ACIDS HAVING FROM 6-12 CARBON ATOMS, IN THE PRESENCE OF ALCOHOLIC HYDROGEN CHLORIDE SOLUTION AS CONDENSATION AGENT SUBSTANTIALLY FREE FROM WATER.
Claim 2
Dependent Claim
53 words
A PROCESS FOR THE PRODUCTION OF VANILLYL AMIDES IN WHICH EXCESS GUAIACOL IS REACTED WITH A METHYLOL AMIDE OF AN ACID TAKEN FROM THE CLASS CONSISTING OF ALIPHATIC SATURATED AND UNSATURATED CARBOXYLIC ACIDS HAVING FROM 6-12 CARBON ATOMS, IN THE PRESENCE OF ALCOHOLIC HYDROGEN CHLORIDE SOLUTION AS CONDENSATION AGENT SUBSTANTIALLY FREE FROM WATER.
References Cited (Backward Citations)
US1503631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |