Patent US3157616A successfully refreshed from Google Patents.
US3157616A
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Antiozonant rubber compositions containing alkylene bis-hydrazines
Assignee: Uniroyal Inc
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Filing: 1962-04-09
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Granted: 1964-11-17
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Expires: 1982-04-09
Abstract
No abstract record available.
Inventors
- 👤 Stewart Ruthmarie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:37
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/22; C07D295/28; C07D295/30; C07C; C07C243/00; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/24; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A COMPOSITION COMPRISING 100 PARTS BY WEIGHT OF A RUBBERY POLYMER SELECTED FROM THE GROUP CONSISTING OF DIOLEFIN POLYMERS AND ETHYLENE-PROPYLENE COPOLYMERS, AND FROM 1/10 TO 5 PARTS BY WEIGHT OF A BISHYDRAZINE SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FORMULAS:
Claim 2
Dependent Claim
43 words
A COMPOSITION COMPRISING 100 PARTS BY WEIGHT OF A RUBBERY POLYMER SELECTED FROM THE GROUP CONSISTING OF DIOLEFIN POLYMERS AND ETHYLENE-PROPYLENE COPOLYMERS, AND FROM 1/10 TO 5 PARTS BY WEIGHT OF A BISHYDRAZINE SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FORMULAS:
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |