US3006894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing a vinylidene compound in the presence of an alkali catalyst
Assignee: EIDP Inc
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Filing: 1957-07-12
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Granted: 1961-10-31
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Expires: 1977-07-12
Abstract
No abstract record available.
Inventors
- 👤 Evans Evan Franklin
- 👤 Jr Lester David Grandine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:00
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/06; C08F; C08F16/00; C08F16/36; C08F20/00; C08F20/02; C08F20/42; C08F20/50; C08G2/18; C08G2/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A PROCESS FOR POLYMERIZING TO FIBER-FORMING MOLECULAR WEIGHT A VINYLIDENE MONOMER OF THE CLASS CONSISTING OF
Claim 2
Dependent Claim
16 words
A PROCESS FOR POLYMERIZING TO FIBER-FORMING MOLECULAR WEIGHT A VINYLIDENE MONOMER OF THE CLASS CONSISTING OF
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) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |