US2455999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing organosilicones
Assignee: Corning Glass Works
•
Filing: 1944-08-01
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Granted: 1948-12-14
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Expires: 1964-08-01
Abstract
No abstract record available.
Inventors
- 👤 Hyde James Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:52
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/32; C08G77/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2258218A
Cited
US2371068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |