US3122521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of polymerizing fluoroalkyl-substituted cyclotrisiloxanes
Assignee: Dow Silicones Corp
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Filing: 1960-03-18
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Granted: 1964-02-25
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Expires: 1980-03-18
Abstract
No abstract record available.
Inventors
- 👤 Ogden R Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:29
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
13 words
A METHOD WHICH COMPRISES HEATING A MIXTURE OF (1) CYCLOTRISILOXANES OF THE FORMULA
References Cited (Backward Citations)
US2918494A
Cited
US2961425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |