Patent US2782233A successfully refreshed from Google Patents.
US2782233A
Expired / Lapsed
US
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Boric tris-(fluorocarboxylic) anhydrides
Assignee: EIDP Inc
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Filing: 1955-03-11
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Granted: 1957-02-19
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Expires: 1975-03-11
Abstract
No abstract record available.
Inventors
- 👤 Earl L Muetterties
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:06
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/022; C08; C08F; C08F4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
BORIC TRIS(FLUOROCARBOXYLIC)ANHYDRIDES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
BORIC TRIS(FLUOROCARBOXYLIC)ANHYDRIDES OF THE GENERAL 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) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |