US3399223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal redistribution of alkoxymethylpolysilanes and products thereof
Assignee: Dow Silicones Corp
•
Filing: 1966-02-24
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Granted: 1968-08-27
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Expires: 1986-02-24
Abstract
No abstract record available.
Inventors
- 👤 William H Atwell
- 👤 Donald R Weyenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:25
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/58; A61K8/585; A61Q; A61Q17/00; A61Q17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
THE PROCESS COMPRISING HEATING UNDER NEUTRAL CONDITIONS, AT A TEMPERATURE OF 165* TO 650* C., A POLYSILANE OF THE FORMULA
Claim 2
Dependent Claim
20 words
THE PROCESS COMPRISING HEATING UNDER NEUTRAL CONDITIONS, AT A TEMPERATURE OF 165* TO 650* C., A POLYSILANE OF THE FORMULA
References Cited (Backward Citations)
US3308146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |