Patent US3872461A successfully refreshed from Google Patents.
Patent FR1210415A successfully refreshed from Google Patents.
US2626931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization products and process of preparing them
Assignee: Hoechst AG
•
Filing: 1949-05-26
•
Granted: 1953-01-27
•
Expires: 1969-05-26
Abstract
No abstract record available.
Inventors
- 👤 Bestian Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:37
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
POLYMERIZATION PRODUCTS OF COMPOUNDS HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
8 words
POLYMERIZATION PRODUCTS OF COMPOUNDS HAVING THE GENERAL 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) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |