US1972918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization accelerator and process of preparing the same
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1932-03-19
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Granted: 1934-09-11
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Expires: 1952-03-19
Abstract
No abstract record available.
Inventors
- 👤 Bunbury Hugh Mills
- 👤 Davies John Stanley Herbert
- 👤 Naunton William Johnson Smith
- 👤 Robinson Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:42
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/74; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
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) | 1937-09-10 | 1938-03-12 | 1938-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-09-10 | 1942-03-12 | 1942-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-09-10 | 1946-03-12 | 1946-09-11 | $7700.00 | Window Closed / Lapsed |