US3798251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl fluorohexahalogenoisopropoxycarboxylate silicon derivatives and polymers and copolymers thereof
Assignee: Produits Chimiques Pechiney Saint Gobain
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Filing: 1971-06-30
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Granted: 1974-03-19
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Expires: 1991-06-30
Abstract
Abstract THIS INVENTION IS ADDRESSED TO DERIVATIVES OF ALKYL FLUOROHEXAHALOGENOISOPROPOXYCARBOXYLATE SILICON DERIVATIVES, AND POLYMERS AND COPOLYMERS FORMED THEREOF. THE SILICON DERIVATIVES OF THE PRESENT INVENTION ARE USEFUL AS INTERMEDIATES IN THE PREPARATION OF SUCH POLYMERS AND COPOLYMERS WHICH ARE USEFUL AS LUBRICANTS AS WATER REPELLENT AND OIL REPELLENT AGENTS AND AS SOLVENT RESISTANT FLUORINATED ELASTOMERS.
Inventors
- 👤 F Meiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:40
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/385; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/12; C07F7/18; C07F7/1804; C07F7/21; C08G77/22; C08G77/24; C10; C10M; C10M3/00; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |