US3331823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of vinylidene fluoride with 1, 2, 3, 3, 3-pentafluoropropylene
Assignee: Montedison SpA
•
Filing: 1964-03-31
•
Granted: 1967-07-18
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Expires: 1984-03-31
Abstract
No abstract record available.
Inventors
- 👤 Sianesi Dario
- 👤 Bernardi Gian Carlo
- 👤 Reggio Antonino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:46
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/18; C08F214/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A FLUORINATED COPOLYMER CONSISTING OF COMBINED MONOMERIC UNITS OF VINYLIDENE FLUORIDE AND AT LEST 1% BY WEIGHT OF THE COMBINED MONOMERIC UNITS OF 1,2,3,3,3PENTAFLUOROPROPYLENE.
Claim 2
Dependent Claim
24 words
A FLUORINATED COPOLYMER CONSISTING OF COMBINED MONOMERIC UNITS OF VINYLIDENE FLUORIDE AND AT LEST 1% BY WEIGHT OF THE COMBINED MONOMERIC UNITS OF 1,2,3,3,3PENTAFLUOROPROPYLENE.
References Cited (Backward Citations)
US3163628A
Cited
US3243411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |