US2215876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of liquid olefin polymers
Assignee: Standard IG Co
•
Filing: 1938-06-09
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Granted: 1940-09-24
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Expires: 1958-06-09
Abstract
No abstract record available.
Inventors
- 👤 Herold Paul
- 👤 Kroenig Walter
- 👤 Kaufmann Hermann
- 👤 Donath Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:32
CPC Classifications
C; C07; C07C; C07C9/00; C07C9/22; C07C5/00; C07C5/02; C07C5/03; C07C2527/00; C07C2527/02; C07C2527/04; C07C2527/043; C07C2527/047
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) | 1943-09-24 | 1944-03-25 | 1944-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-09-24 | 1948-03-25 | 1948-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-09-24 | 1952-03-25 | 1952-09-24 | $7700.00 | Window Closed / Lapsed |