US2301668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polymerization or condensation products from unsaturated hydrocarbons
Assignee: Individual
•
Filing: 1938-06-09
•
Granted: 1942-11-10
•
Expires: 1958-06-09
Abstract
No abstract record available.
Inventors
- 👤 Pier Mathias
- 👤 Christmann Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:21
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08F; C08F210/00; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/945
Claims Analysis
Total Claims: 0
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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) | 1945-11-09 | 1946-05-11 | 1946-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-09 | 1950-05-11 | 1950-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-09 | 1954-05-11 | 1954-11-10 | $7700.00 | Window Closed / Lapsed |