US2421653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of polyorganohalogenopolysiloxanes
Assignee: General Electric Co
•
Filing: 1944-07-01
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Granted: 1947-06-03
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Expires: 1964-07-01
Abstract
No abstract record available.
Inventors
- 👤 Robert O Sauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:43
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/121; C07F7/125; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-02 | 1950-12-02 | 1951-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-02 | 1954-12-02 | 1955-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-02 | 1958-12-02 | 1959-06-03 | $7700.00 | Window Closed / Lapsed |