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US2514533A
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Diels-alder condensation products of certain polyolefinic, cyclic hydrocarbon fractions
Assignee: Universal Oil Products Co
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Filing: 1947-12-24
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Granted: 1950-07-11
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Expires: 1967-12-24
Abstract
No abstract record available.
Inventors
- 👤 Herman S Bloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:30
CPC Classifications
C; C07; C07C; C07C405/00; C07C405/005; C07C405/0075; C08; C08F; C08F10/00; C08F8/00; C08F8/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A SURFACE ACTIVE AGENT COMPRISING A WATER SOLUBLE SALT OF AN ADDUCT OF, (1) AN ACIDIC DIENOPHILE SELECTED FROM THE GROUP CONSISTING OF THE MONO AND DIBASIC ACIDIC COMPOUNDS CONTAINING THE REACTIVE GROUP:
Claim 2
Dependent Claim
33 words
A SURFACE ACTIVE AGENT COMPRISING A WATER SOLUBLE SALT OF AN ADDUCT OF, (1) AN ACIDIC DIENOPHILE SELECTED FROM THE GROUP CONSISTING OF THE MONO AND DIBASIC ACIDIC COMPOUNDS CONTAINING THE REACTIVE GROUP:
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) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |