Patent US2030736A successfully refreshed from Google Patents.
US2030736A
Expired / Lapsed
US
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Process of producing disilanerayon
Assignee: North American Rayon Corp
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Filing: 1934-10-22
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Granted: 1936-02-11
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Expires: 1954-10-22
Abstract
No abstract record available.
Inventors
- 👤 Rudolph S Bley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:28
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; Y; Y10; Y10S; Y10S8/00; Y10S8/01
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) | 1939-02-10 | 1939-08-12 | 1940-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-02-10 | 1943-08-12 | 1944-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-02-10 | 1947-08-12 | 1948-02-11 | $7700.00 | Window Closed / Lapsed |