US2360436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofluoric acid alkylation of paraffins
Assignee: Phillips Petroleum Co
•
Filing: 1941-06-02
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Granted: 1944-10-17
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Expires: 1961-06-02
Abstract
No abstract record available.
Inventors
- 👤 Maryan P Matuszak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:24
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2/86; C07C2/862; C07C2/864; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/92
Claims Analysis
Total Claims: 0
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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) | 1947-10-17 | 1948-04-17 | 1948-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-10-17 | 1952-04-17 | 1952-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-10-17 | 1956-04-17 | 1956-10-17 | $7700.00 | Window Closed / Lapsed |