US2252318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber compounding and vulcanization and resulting vulcanizates
Assignee: Henkel Corp
•
Filing: 1937-01-21
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Granted: 1941-08-12
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Expires: 1957-01-21
Abstract
No abstract record available.
Inventors
- 👤 Rishel E Hoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:35
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K5/00; C08K5/59
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) | 1944-08-11 | 1945-02-10 | 1945-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-11 | 1949-02-10 | 1949-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-11 | 1953-02-10 | 1953-08-12 | $7700.00 | Window Closed / Lapsed |