US2865971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation with effluent refrigeration and flashed vapor absorption
Assignee: Texaco Inc
•
Filing: 1955-12-23
•
Granted: 1958-12-23
•
Expires: 1975-12-23
Abstract
No abstract record available.
Inventors
- 👤 David K Beavon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:38
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
IN A PROCESS FOR CATALYTIC ISOBUTANE-OLEFIN ALKYLATION EMPLOYING EFFLUENT REFRIGERATION, WHEREIN ISOBUTANE IN MOLAR EXCESS AND OLEFINIC FEED STOCK CONTAINING SOME PROPANE ARE CONTACTED IN LIQUID PHSE IN AN ALKYLATION
Claim 2
Dependent Claim
30 words
IN A PROCESS FOR CATALYTIC ISOBUTANE-OLEFIN ALKYLATION EMPLOYING EFFLUENT REFRIGERATION, WHEREIN ISOBUTANE IN MOLAR EXCESS AND OLEFINIC FEED STOCK CONTAINING SOME PROPANE ARE CONTACTED IN LIQUID PHSE IN AN ALKYLATION
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) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |