US2525655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenol-aldehyde-rubber derivatives
Assignee: Wingfoot Corp
•
Filing: 1946-11-19
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Granted: 1950-10-10
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Expires: 1966-11-19
Abstract
No abstract record available.
Inventors
- 👤 Ianni James D D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:16
CPC Classifications
C; C08; C08C; C08C19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
THE PROCESS WHICH COMPRISES REACTING 100 PARTS OF RUBBER WITH 20-50 PARTS OF AN ALDEHYDE IN THE PRESENCE OF A CONDENSATION CATALYST FOR RUBBER AND THEN REACTING THE ALDEHYDE-RUBBER THUS OBTAINED WITH A PHENOL.
Claim 2
Dependent Claim
34 words
THE PROCESS WHICH COMPRISES REACTING 100 PARTS OF RUBBER WITH 20-50 PARTS OF AN ALDEHYDE IN THE PRESENCE OF A CONDENSATION CATALYST FOR RUBBER AND THEN REACTING THE ALDEHYDE-RUBBER THUS OBTAINED WITH A PHENOL.
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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |