US2926205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of chloroprene
Assignee: Individual
•
Filing: 1957-05-07
•
Granted: 1960-02-23
•
Expires: 1977-05-07
Abstract
No abstract record available.
Inventors
- 👤 Bellringer Frederick James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:00
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/25; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
THE PROCESS FOR THE PRODUCTION OF CHLOROPRENE BY HEATING 3:4-DICHLORBUTENE-1 WITH AN AQUEOUS SOLUTION OF AN ALKALI CHARACTERIZED IN THAT THE REACTION IS CARRIED OUT IN THE PRESENCE OF AN ALKALI METAL PICRATE.
Claim 2
Dependent Claim
33 words
THE PROCESS FOR THE PRODUCTION OF CHLOROPRENE BY HEATING 3:4-DICHLORBUTENE-1 WITH AN AQUEOUS SOLUTION OF AN ALKALI CHARACTERIZED IN THAT THE REACTION IS CARRIED OUT IN THE PRESENCE OF AN ALKALI METAL PICRATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |