US2753379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of chlorofluoroolefin monomer
Assignee: MW Kellogg Co
•
Filing: 1953-01-12
•
Granted: 1956-07-03
•
Expires: 1973-01-12
Abstract
No abstract record available.
Inventors
- 👤 Billy F Landrum
- 👤 Jr Ralph L Herbst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:37
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/395; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/947
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PROCESS FOR PURIFYING A FLUOROCHLOROLEFIN MONOMER WHICH COMPRISES ADMIXING SAID MONOMER WITH A CYCLIC TERPENE AT AN ELEVATED TEMPERATURE AND RECOVERING THE PURIFIED FLUOROCHLOROOLEFIN MONOMER FROM THE RESULTING ADMIXTURE.
Claim 2
Dependent Claim
30 words
A PROCESS FOR PURIFYING A FLUOROCHLOROLEFIN MONOMER WHICH COMPRISES ADMIXING SAID MONOMER WITH A CYCLIC TERPENE AT AN ELEVATED TEMPERATURE AND RECOVERING THE PURIFIED FLUOROCHLOROOLEFIN MONOMER FROM THE RESULTING ADMIXTURE.
References Cited (Backward Citations)
US2579437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |