US2374600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation of aromatic hydrocarbons
Assignee: Universal Oil Products Co
•
Filing: 1943-05-13
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Granted: 1945-04-24
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Expires: 1963-05-13
Abstract
No abstract record available.
Inventors
- 👤 Vladimir N Ipatieff
- 👤 Schmerling Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:32
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/02; C07C15/067; C07C15/073; C07C1/00; C07C1/20; C07C1/24; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/70; C07C2521/00; C07C2521/12; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/911
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) | 1948-04-23 | 1948-10-23 | 1949-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-23 | 1952-10-23 | 1953-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-23 | 1956-10-23 | 1957-04-24 | $7700.00 | Window Closed / Lapsed |