US2933466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil resistant rubber-like material containing a butadiene-acrylonitrile copolymer and calcined magnesia
Assignee: Bendix Aviation Corp
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Filing: 1956-06-06
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Granted: 1960-04-19
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Expires: 1976-06-06
Abstract
No abstract record available.
Inventors
- 👤 Coleman P Morgan
- 👤 Robert R Meltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:04
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A VULCANIZABLE OIL-RESISTANT RUBBER-LIKE ELECTRICALLY INSULATING MATERIAL COMPRISING ABOUT 100 PARTS BY WEIGHT OF A BASE COMPOUND CONSISTING ESSENTIALLY OF BUTADIENEACRYLONITRILE COPOLYMER, FROM ABOUT 100 TO 125 PARTS BY WEIGHT OF FINELY DIVIDED CALCINED MAGNESIA, AND SMALL BUT EFFECTIVE AMOUNTS OF AT LEAST ONE VULCANIZATION ACCELERATOR AND ACTIVATOR.
Claim 2
Dependent Claim
48 words
A VULCANIZABLE OIL-RESISTANT RUBBER-LIKE ELECTRICALLY INSULATING MATERIAL COMPRISING ABOUT 100 PARTS BY WEIGHT OF A BASE COMPOUND CONSISTING ESSENTIALLY OF BUTADIENEACRYLONITRILE COPOLYMER, FROM ABOUT 100 TO 125 PARTS BY WEIGHT OF FINELY DIVIDED CALCINED MAGNESIA, AND SMALL BUT EFFECTIVE AMOUNTS OF AT LEAST ONE VULCANIZATION ACCELERATOR AND ACTIVATOR.
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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |