Patent US3140300A successfully refreshed from Google Patents.
US3140300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition consisting of maleic anhydride and a fatty acid
Assignee: Halcon Research and Development Corp
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Filing: 1960-11-15
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Granted: 1964-07-07
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Expires: 1980-11-15
Abstract
No abstract record available.
Inventors
- 👤 Gans Manfred
- 👤 Joseph L Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:37
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/54; C07C51/573
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST 99.5 WT. PERCENT MALEIC ANHYDRIDE AND AT LEAST 0.07 WT. PERCENT OF AN ALIPHATIC MONOCARBOXYLIC ACID HAVING FROM ABOUT 10 TO 25 CARBON ATOMS.
Claim 2
Dependent Claim
31 words
A COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST 99.5 WT. PERCENT MALEIC ANHYDRIDE AND AT LEAST 0.07 WT. PERCENT OF AN ALIPHATIC MONOCARBOXYLIC ACID HAVING FROM ABOUT 10 TO 25 CARBON ATOMS.
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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |