US3110742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyalkyl benzene manufacture
Assignee: EIDP Inc
•
Filing: 1960-07-20
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Granted: 1963-11-12
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Expires: 1980-07-20
Abstract
No abstract record available.
Inventors
- 👤 Benjamin W Howk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:58
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/26; C07C2521/00; C07C2521/18; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR THE PREPARATION OF POLYALKYL BENZENES HAVING FROM TWO TO FOUR ALKYL SUBSTITUENTS WHICH COMPRISES REACTING AN ALKYL-SUBSTITUTED BENZYL HALIDE WITH HYDROGEN IN THE PRESENCE OF A NOBLE METAL HYDROGENATION CATALYST SUPPORTED ON CHARCOAL AND AT A TEMPERATURE SUFFICIENT TO MAINTAIN SAID BENZYL HALIDE IN THE VAPOR STATE.
Claim 2
Dependent Claim
50 words
A PROCESS FOR THE PREPARATION OF POLYALKYL BENZENES HAVING FROM TWO TO FOUR ALKYL SUBSTITUENTS WHICH COMPRISES REACTING AN ALKYL-SUBSTITUTED BENZYL HALIDE WITH HYDROGEN IN THE PRESENCE OF A NOBLE METAL HYDROGENATION CATALYST SUPPORTED ON CHARCOAL AND AT A TEMPERATURE SUFFICIENT TO MAINTAIN SAID BENZYL HALIDE IN THE VAPOR STATE.
References Cited (Backward Citations)
US2866828A
Cited
US2977395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |