US2841622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing alkylated
Assignee: —
•
Filing: —
•
Granted: 1958-07-01
•
Expires: 1975-07-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:00
CPC Classifications
C; C07; C07C; C07C39/00; C07C39/02; C07C39/06; C07C37/00; C07C37/11; C07C37/16; C07C37/20; C07C39/12; C07C39/15; C07C39/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
IN THE PROCESS FOR PREPARING 2,4,6-TRIALKYL PHENOLS, THE IMPROVEMENT WHICH COMPRISES REACTING A BISPHENOL OF THE FORMULA
Claim 2
Dependent Claim
17 words
IN THE PROCESS FOR PREPARING 2,4,6-TRIALKYL PHENOLS, THE IMPROVEMENT WHICH COMPRISES REACTING A BISPHENOL OF THE FORMULA
References Cited (Backward Citations)
US1848665A
Cited
US2497503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |