US2147154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing polymerization products of vinyl chloride
Assignee: IG Farbenindustrie AG
•
Filing: 1936-10-15
•
Granted: 1939-02-14
•
Expires: 1956-10-15
Abstract
No abstract record available.
Inventors
- 👤 Fikentscher Hans
- 👤 Franke Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:17
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/02; C08F214/04; C08F214/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-02-13 | 1942-08-15 | 1943-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-13 | 1946-08-15 | 1947-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-13 | 1950-08-15 | 1951-02-14 | $7700.00 | Window Closed / Lapsed |