Patent US2810738A successfully refreshed from Google Patents.
US2810738A
Expired / Lapsed
US
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Colloidal organo-silicon polymers
Assignee: Copeland and Slack Inc
•
Filing: 1953-04-02
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Granted: 1957-10-22
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Expires: 1973-04-02
Abstract
No abstract record available.
Inventors
- 👤 George H Slack
- 👤 Kenneth B Copeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:22
CPC Classifications
C; C08; C08G; C08G77/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A POLYMER CONTAINING SILICON FORMED BY REACTING ETHYLENE GLYCOL AND SILICA IN A COLLOIDAL STATE IN WATER UNDER THE INFLUENCE OF HEAT AT A TEMPERATURE ABOVE ABOUT 200*F. UNTIL A CLEAR UNCTUOUS WATER-WHITE POLYMER IS PRODUCED WHICH IS SOLUBLE IN WATER.
Claim 2
Dependent Claim
41 words
A POLYMER CONTAINING SILICON FORMED BY REACTING ETHYLENE GLYCOL AND SILICA IN A COLLOIDAL STATE IN WATER UNDER THE INFLUENCE OF HEAT AT A TEMPERATURE ABOVE ABOUT 200*F. UNTIL A CLEAR UNCTUOUS WATER-WHITE POLYMER IS PRODUCED WHICH IS SOLUBLE IN WATER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |