US2656335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin and process for its manufacture
Assignee: Universal Oil Products Co
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Filing: 1951-06-14
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Granted: 1953-10-20
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Expires: 1971-06-14
Abstract
No abstract record available.
Inventors
- 👤 Herman S Bloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:50
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR PRODUCING A SYNTHETIC RESIN WHICH COMPRISES REACTING A CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES WITH THE CONDENSATION PRODUCT OF FROM ABOUT 5 TO ABOUT 20 MOLS OF A PHENOL HAVING AT LEAST TWO NUCLEAR HYDROGEN ATOMS, FROM ABOUT 25 TO ABOUT 45 MOLS OF AN AROMATIC HYDROCARBON HAVING AT LEAST TWO NUCLEAR HYDROGEN ATOMS AND AN ALKYL GROUP OF NOT MORE THAN TWO CARBON ATOMS, AND FROM ABOUT 50 TO ABOUT 75 MOLS OF A CONJUGATED ALIPHATIC DIENE HYDROCARBON.
Claim 2
Dependent Claim
87 words
A PROCESS FOR PRODUCING A SYNTHETIC RESIN WHICH COMPRISES REACTING A CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES WITH THE CONDENSATION PRODUCT OF FROM ABOUT 5 TO ABOUT 20 MOLS OF A PHENOL HAVING AT LEAST TWO NUCLEAR HYDROGEN ATOMS, FROM ABOUT 25 TO ABOUT 45 MOLS OF AN AROMATIC HYDROCARBON HAVING AT LEAST TWO NUCLEAR HYDROGEN ATOMS AND AN ALKYL GROUP OF NOT MORE THAN TWO CARBON ATOMS, AND FROM ABOUT 50 TO ABOUT 75 MOLS OF A CONJUGATED ALIPHATIC DIENE HYDROCARBON.
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) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |