Patent US3256305A successfully refreshed from Google Patents.
US3256305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of halo-aliphatic esters of carboxylic acids
Assignee: Fabriek Van Chemische Producten Vondelingenplaat N V
•
Filing: 1962-11-13
•
Granted: 1966-06-14
•
Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Jacob Van Gijzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:44
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/68; C07D307/38; C07D307/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A PROCESS FOR THE PREPARATION OF A HALO-ALIPHATIC ESTER OF A CARBOXYLIC ACID BY CONVERSION OF A CARBOXYLIC HALIDE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
23 words
A PROCESS FOR THE PREPARATION OF A HALO-ALIPHATIC ESTER OF A CARBOXYLIC ACID BY CONVERSION OF A CARBOXYLIC HALIDE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2448767A
Cited
US2449994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |