Patent US2993903A successfully refreshed from Google Patents.
US2993903A
Expired / Lapsed
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Polymerization inhibition
Assignee: Phillips Petroleum Co
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Filing: 1959-05-14
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Granted: 1961-07-25
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Expires: 1979-05-14
Abstract
No abstract record available.
Inventors
- 👤 Kraus Gerard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:09
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/20; C08; C08F; C08F2/00; C08F2/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF AN UNSATURATED MONOMER OF THE BENZENE AND PYRIDINE SERIES CONTAINING THE VINYLIDENE GROUP AND FREE OF OTHER SUBSTITUENTS NOT INERT IN THE REACTION, 0.1 TO 15 PARTS BY WEIGHT OF FURNACE CARBON BLACK PER 100 PARTS OF THE MONOMER AND, PER GRAM OF SAID BLACK, 0.08 TO 35 MILLIMOLES OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF MOLECULAR OXYGEN GAS, ORGANIC PEROXIDES, AND ORGANIC HYDROPEROXIDES.
Claim 2
Dependent Claim
73 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF AN UNSATURATED MONOMER OF THE BENZENE AND PYRIDINE SERIES CONTAINING THE VINYLIDENE GROUP AND FREE OF OTHER SUBSTITUENTS NOT INERT IN THE REACTION, 0.1 TO 15 PARTS BY WEIGHT OF FURNACE CARBON BLACK PER 100 PARTS OF THE MONOMER AND, PER GRAM OF SAID BLACK, 0.08 TO 35 MILLIMOLES OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF MOLECULAR OXYGEN GAS, ORGANIC PEROXIDES, AND ORGANIC HYDROPEROXIDES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |