Patent US4457452A successfully refreshed from Google Patents.
Patent US2683745A successfully refreshed from Google Patents.
US2683745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 2-amino-alpha-methylbenzyl alcohol
Assignee: Monsanto Chemicals Ltd
•
Filing: 1952-08-23
•
Granted: 1954-07-13
•
Expires: 1972-08-23
Abstract
No abstract record available.
Inventors
- 👤 William S Emerson
- 👤 Robert A Heimsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:24
CPC Classifications
C; C07; C07C; C07C213/00; C07C201/00; C07C201/06; C07C201/12; C07C205/00; C07C205/13; C07C209/00; C07C209/30; C07C209/32; C07C209/36; C07C213/02; C07C217/00; C07C217/78; C07C217/80; C07C217/82; C07C217/84; C07C221/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
THE PROCESS WHICH COMPRISES CONTACTING 2NITRO-ACETOPHENONE WITH HYDROGEN IN THE PRESENCE OF A PALLADIUM CATALYST, AT A TEMPERATURE OF FROM 40* C. TO 150* C. AND AT A PRESSURE OF FROM 10 TO 1000 ATMOSPHERES, AND RECOVERING 2-AMINOA-METHYLBENZYL ALCOHOL FROM THE RESULTING REACTION PRODUCT.
Claim 2
Dependent Claim
44 words
THE PROCESS WHICH COMPRISES CONTACTING 2NITRO-ACETOPHENONE WITH HYDROGEN IN THE PRESENCE OF A PALLADIUM CATALYST, AT A TEMPERATURE OF FROM 40* C. TO 150* C. AND AT A PRESSURE OF FROM 10 TO 1000 ATMOSPHERES, AND RECOVERING 2-AMINOA-METHYLBENZYL ALCOHOL FROM THE RESULTING REACTION PRODUCT.
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) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |