Patent US3829477A successfully refreshed from Google Patents.
US3829477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of acid chlorides and their acids
Assignee: Produits Chimiques Pechiney Saint Gobain
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Filing: 1970-11-23
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Granted: 1974-08-13
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Expires: 1990-11-23
Abstract
Abstract A PROCESS FOR THE PREPARATION OF ACID CHLORIDES AND THEIR CORRESPONDING ACIDS BY REACTION OF AN ALIPHATIC HYDROCARBON HAVING THE FORMULA CCL2=CXY AND AN ORGANIC ACID HAVING THE FORMULA CHWZ-COOH AT A TEMPERATURE WITHIN THE RANGE OF 100* TO 250*C., IN THE PRESENCE OF FERRIC CHLORIDE AND UNDER HYDROCHLORIC ACID PRESSURE IN WHICH W,X,Y AND Z ARE HYDROGEN, CHLORINE, A C1 TO C2 ALKYL GROUP, OR A CHLORINATED C1 TO C2 ALKYL GROUP OTHER THAN TRICHLOROMETHYL.
Inventors
- 👤 J Strini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:16
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/58; C07C51/60
Claims Analysis
Total Claims: 0
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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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |