US2833833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of polyalkylated benzenes from ketones
Assignee: Universal Oil Products Co
•
Filing: 1955-02-15
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Granted: 1958-05-06
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Expires: 1975-02-15
Abstract
No abstract record available.
Inventors
- 👤 Schmerling Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:11
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C1/207; C07C1/2072; C07C1/2074; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A PROCESS FOR THE PREPARATION OF A POLYALKAYLATED BENZENE WHICH COMPRISES REACTING A KETONE HAVING THE FORMULA
Claim 2
Dependent Claim
17 words
A PROCESS FOR THE PREPARATION OF A POLYALKAYLATED BENZENE WHICH COMPRISES REACTING A KETONE HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |