US2933544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for increasing the carbon chain length of an olefin
Assignee: Carwin Co
•
Filing: 1959-03-09
•
Granted: 1960-04-19
•
Expires: 1979-03-09
Abstract
No abstract record available.
Inventors
- 👤 William Von E Doering
- 👤 Flamme Paul M La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:51
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/26; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/935
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
29 words
THE PROCESS FOR INCREASING THE CARBON CHAIN LENGTH OF AN OLEFIN BY ONE CARBON ATOM COMPRISING REACTING TOGETHER BROMOFORM, POTASSIUM TERTIARY BUTYLATE, AND AN OLEFILN HAVILNG THE GENERAL FORMULA
Claim 2
Dependent Claim
29 words
THE PROCESS FOR INCREASING THE CARBON CHAIN LENGTH OF AN OLEFIN BY ONE CARBON ATOM COMPRISING REACTING TOGETHER BROMOFORM, POTASSIUM TERTIARY BUTYLATE, AND AN OLEFILN HAVILNG THE GENERAL FORMULA
Claim 3
Dependent Claim
16 words
THE PROCESS FOR THE PREPARATION OF AN ALLENE COMPRISING REACTING A 1,1-DIBROMOCYCLOPROPANE HAVING THE GENERAL FORMULA
Claim 4
Dependent Claim
16 words
THE PROCESS FOR THE PREPARATION OF AN ALLENE COMPRISING REACTING A 1,1-DIBROMOCYCLOPROPANE HAVING THE GENERAL FORMULA
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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |