Patent US2470641A successfully refreshed from Google Patents.
US2470641A
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Disintegrated newsprint-boric acid insulation composition
Assignee: Individual
•
Filing: 1945-05-12
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Granted: 1949-05-17
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Expires: 1965-05-12
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Portz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:13
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02; C04; C04B; C04B18/00; C04B18/04; C04B18/18; C04B18/24; C04B18/28; C08L1/00; C08L1/02; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/7604; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US12882A
Cited
GB189826957A
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GB190601296A
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US923358A
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US1837261A
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US2147793A
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US2166926A
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US2310343A
Cited
US2357068A
Cited
US2335220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |