Patent US2426111A successfully refreshed from Google Patents.
US2426111A
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US
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Method of producing hard electrically insulating articles from polyisobutylene, styrene, and divinyl benzene
Assignee: Individual
•
Filing: 1939-09-19
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Granted: 1947-08-19
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Expires: 1959-09-19
Abstract
No abstract record available.
Inventors
- 👤 Mertens Willi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:33
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08F; C08F255/00; C08F255/08; C08F255/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2078194A
Cited
GB355416A
Cited
GB396186A
Cited
US2101107A
Cited
US2120006A
Cited
US2066330A
Cited
US2155590A
Cited
US2202846A
Cited
US2180082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-18 | 1951-02-17 | 1951-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-18 | 1955-02-17 | 1955-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-18 | 1959-02-17 | 1959-08-19 | $7700.00 | Window Closed / Lapsed |