Patent US2967181A successfully refreshed from Google Patents.
US2967181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making cyclopropyl derivatives
Assignee: Houdry Process Corp
•
Filing: 1957-08-30
•
Granted: 1961-01-03
•
Expires: 1977-08-30
Abstract
No abstract record available.
Inventors
- 👤 Elbert C Herrick
- 👤 Orchin Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:16
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/272; C07C17/275
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
IN THE PROCESS OF SYNTHESIZING CYCLOPROPYL HALIDE DERIVATIVES BY CONDENSING AN OLEFINIC HYDROCARBON HAVING 3 TO 8 CARBON ATOMS AND CONTAINING AT LEAST TWO DOUBLE BONDS WITH A HALOALKYLATING AGENT IN THE PRESENCE OF AN ALKALI METAL ALKOXIDE CONDENSING AGENT, WHEREIN SAID HALOALKYLATING AGEN IS A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
14 words
A PROCESS IN ACCORDANCE WITH CLAIM 2 WHEREIN THE OLEFINIC COMPOUND IS VINYL PYRIDINE.
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) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |