US2701250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing indole-3-acetic acids
Assignee: IOWA STATE COLLEGE RES FOUND
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Filing: 1951-04-19
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Granted: 1955-02-01
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Expires: 1971-04-19
Abstract
No abstract record available.
Inventors
- 👤 Sidney W Fox
- 👤 Milon W Bullock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:12
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/18; C07D209/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A PROCESS OF PRODUCING INDOLE-3-ACETIC ACIDS, THE STEP OF REFLUXING A REACTION MIXTURE CONTAINING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL Y,Y-CIMETHOXYBUTYRATE AND LEVULINIC ACID AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHENYLHYDRAZING AND PHENYLHYDRAZINE HYDROCHLORIDE, WHILE PROMOTING THE CONVERSION OF SAID REACTANTS TO AN ETHYL INDOLEACETATE ESTER BY THE PRESENCE AS A CATALYST OF A LOWER SATURATED ALIPHATIC ALCOHOL ACIDIFIED WITH A STRONG ACID.
Claim 2
Dependent Claim
70 words
IN A PROCESS OF PRODUCING INDOLE-3-ACETIC ACIDS, THE STEP OF REFLUXING A REACTION MIXTURE CONTAINING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL Y,Y-CIMETHOXYBUTYRATE AND LEVULINIC ACID AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHENYLHYDRAZING AND PHENYLHYDRAZINE HYDROCHLORIDE, WHILE PROMOTING THE CONVERSION OF SAID REACTANTS TO AN ETHYL INDOLEACETATE ESTER BY THE PRESENCE AS A CATALYST OF A LOWER SATURATED ALIPHATIC ALCOHOL ACIDIFIED WITH A STRONG ACID.
References Cited (Backward Citations)
US2222344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |