US3441531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylidene fluoride polymer dispersions having low viscosity
Assignee: Pennwalt Corp
•
Filing: 1966-01-17
•
Granted: 1969-04-29
•
Expires: 1986-01-17
Abstract
No abstract record available.
Inventors
- 👤 Francis Frederick Koblitz
- 👤 Robert Gabriel Petrella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:12
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2435537A
Cited
US2507688A
Cited
US3169120A
Cited
US3211687A
Cited
US3193539A
Cited
US3154519A
Cited
US3324069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |