US2902466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of rubber
Assignee: Universal Oil Products Co
•
Filing: 1953-12-30
•
Granted: 1959-09-01
•
Expires: 1973-12-30
Abstract
No abstract record available.
Inventors
- 👤 Robert H Rosenwald
- 👤 Joseph A Chenicek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:47
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A RUBBER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, RUBBERY BUTADIENE-STYRENE COPOLYMER AND RUBBERY BUTADIENE-ACRYLONITRILE COPOLYMER CONTAINING FROM ABOUT 0.001% TO ABOUT 5% BE WEIGHT OF AN N,N''DI-ALIPHATIC-P-PHENYLENE DIAMINE IN WHICH EACH OF THE ALIPHATIC GROUPS IS A HYDROCARBON RADICAL CONTAINING FROM ABOUT 13 TO ABOUT 30 CARBON ATOMS.
Claim 2
Dependent Claim
50 words
A RUBBER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, RUBBERY BUTADIENE-STYRENE COPOLYMER AND RUBBERY BUTADIENE-ACRYLONITRILE COPOLYMER CONTAINING FROM ABOUT 0.001% TO ABOUT 5% BE WEIGHT OF AN N,N''DI-ALIPHATIC-P-PHENYLENE DIAMINE IN WHICH EACH OF THE ALIPHATIC GROUPS IS A HYDROCARBON RADICAL CONTAINING FROM ABOUT 13 TO ABOUT 30 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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |