US2921055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerization of vinyl compounds in the presence of a tertiary phosphine
Assignee: Glanzstoff AG
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Filing: 1956-12-27
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Granted: 1960-01-12
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Expires: 1976-12-27
Abstract
No abstract record available.
Inventors
- 👤 Heisenberg Erwin
- 👤 Jurgeleit Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:25
CPC Classifications
C; C08; C08F; C08F4/00; B; B01; B01J; B01J8/00; B01J8/005; B01J8/18; B01J8/24; B01J8/26; B04; B04C; B04C9/00; C08F2/00; C08F2/04; C08F2/06; C08F2/36; C08F20/00; C08F20/02; C08F20/42; C08F20/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A PROCESS FOR POLYMERIZING VINYL COMPOUNDS WHICH COMPRISES AGITATING A SMALL AMOUNT OF TERTIARY PHOSPHINE OF THE FORMULA
Claim 2
Dependent Claim
18 words
A PROCESS FOR POLYMERIZING VINYL COMPOUNDS WHICH COMPRISES AGITATING A SMALL AMOUNT OF TERTIARY PHOSPHINE OF THE 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) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |