US2430228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage hf alkylation of isoparaffins by means of olefins
Assignee: ExxonMobil Oil Corp
•
Filing: 1944-01-25
•
Granted: 1947-11-04
•
Expires: 1964-01-25
Abstract
No abstract record available.
Inventors
- 👤 James B Kirkpatrick
- 👤 Carleton H Schlesman
- 👤 Arlie A O'kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:23
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/926; Y10T; Y10T24/00; Y10T24/16; Y10T24/1676
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
AT32355B
Cited
US1625195A
Cited
US2091645A
Cited
US2009347A
Cited
US2173452A
Cited
US2260990A
Cited
US2374262A
Cited
US2380010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |