Patent US2630443A successfully refreshed from Google Patents.
US2630443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of the mixed anhydrides of organic carboxylic acids and ortho titanic acid
Assignee: Monsanto Chemicals Ltd
•
Filing: 1949-10-21
•
Granted: 1953-03-03
•
Expires: 1969-10-21
Abstract
No abstract record available.
Inventors
- 👤 Boyd Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:18
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PROCESS WHICH COMPRISES REACITING ONE MOL OF TITANIUM DISULFIDE WITH AT LEAST FOUR MOLECULAR EQUIVALENTS OF AN ORGANIC CARBOXYLIC ACID, SAID PROCESS BEING CARRIED OUT UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS.
Claim 2
Dependent Claim
30 words
A PROCESS WHICH COMPRISES REACITING ONE MOL OF TITANIUM DISULFIDE WITH AT LEAST FOUR MOLECULAR EQUIVALENTS OF AN ORGANIC CARBOXYLIC ACID, SAID PROCESS BEING CARRIED OUT UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS.
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) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |