Patent US2598634A successfully refreshed from Google Patents.
US2598634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing adducts
Assignee: Monsanto Chemicals Ltd
•
Filing: 1950-03-25
•
Granted: 1952-05-27
•
Expires: 1970-03-25
Abstract
No abstract record available.
Inventors
- 👤 Dazzi Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:47
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/54; C07C51/567
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
THE PROCESS OF PREPARING ADDUCTS WHICH COMPRISES HEATING AT TEMPERATURES OF FROM 150* C. TO 300* C. A MIXTURE COMPRISING MALEIC ANHYDRIDE, A FATTY ACID COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
30 words
THE PROCESS OF PREPARING ADDUCTS WHICH COMPRISES HEATING AT TEMPERATURES OF FROM 150* C. TO 300* C. A MIXTURE COMPRISING MALEIC ANHYDRIDE, A FATTY ACID COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2306281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |