US2470479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making polysiloxane resins
Assignee: General Electric Co
•
Filing: 1945-11-21
•
Granted: 1949-05-17
•
Expires: 1965-11-21
Abstract
No abstract record available.
Inventors
- 👤 Charles S Ferguson
- 👤 Charles E Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:25
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2375998A
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US2258218A
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US2298672A
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US2289477A
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US2258222A
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US2371068A
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US2383827A
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US2406621A
Cited
US2405041A
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 |