US3625929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyfluoroalkenylalkoxy acrylates and polymers thereof
Assignee: Calgon Corp
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Filing: 1970-07-06
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Granted: 1971-12-07
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Expires: 1990-07-06
Abstract
Abstract WHERE ''''R'''' is H or CH3 and ''''Rf'''' is a perfluorinated alkyl chain containing three to 14 carbon atoms, and polymers of these monomers which are useful in preparing oil and water repellent coatings. This invention is directed to novel polyfluoroalkenylalkoxy acrylate monomers represented by the formula:
Inventors
- 👤 Eugene C Stump Jr
- 👤 Paul Daniel Schuman
- 👤 Paul Tarrant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:44
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A homopolymer represented by the repeating group
Claim 2
Dependent Claim
21 words
A copolymer containing from about 10 to about 90 percent by weight of the repeating unit represented by the following formula
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |