US3741931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin rubbers reacted with butadiene resins
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1970-11-23
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Granted: 1973-06-26
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Expires: 1990-11-23
Abstract
Abstract POLYOLEFIN RUBBERS ARE REACTED WITH A LOW MOLECULAR WEIGHT BUTADIENE RESIN AND FURTHER REINFORCED WITH A SILICA FILLER. THIS PROVIDES A VULCANIZED ELASTOMER COMPOUND HAVING EXCELLENT LONG-TERM COMPATIBILITY AND MAINTENANCE OF MECHANICAL PROPERTIES WHEN EXPOSED TO CORROSIVE ENVIRONMENTS.
Inventors
- 👤 J Bell
- 👤 J Martin
- 👤 J Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:23
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/16; C08K; C08K3/00; C08K3/34; C08K3/36; C08K5/00; C08K5/04; C08K5/14; C08L23/18; C08L23/20; C08L23/22; C08L9/00; C08L2312/00; C08L2666/00; C08L2666/02; C08L2666/04
Claims Analysis
Total Claims: 0
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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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |