Patent US5400372A successfully refreshed from Google Patents.
Patent US3631122A successfully refreshed from Google Patents.
US3631122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation process
Assignee: Universal Oil Products Co
•
Filing: 1970-02-24
•
Granted: 1971-12-28
•
Expires: 1990-02-24
Abstract
Abstract NON-VOLATILE BORON OXIDE HYDRATES PRODUCED DURING THE ALKYLATION OF AN ALKYLATABLE AROMATIC HYDROCARBON WITH AN OLEFIN-ACTING COMPOUND IN THE PRESENCE OF A BORON HALIDE AND A BORON HALIDE MODIFIED INORGANIC OXIDE ARE REMOVED BY REACTING THE BORON OXIDE HYDRATE WITH AN OLEFIN-ACTING COMPOUND AND REMOVING THE RESULTANT REACTION PRODUCT.
Inventors
- 👤 Charles V Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:08
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C2521/00; C07C2521/02; C07C2521/04; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1213; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/95
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |