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Patent US1978197A successfully refreshed from Google Patents.
US1978197A
Expired / Lapsed
US
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Manufacture and application of special pigments suited for the coloring of rubber
Assignee: Imperial Chemical Industries Ltd
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Filing: 1928-09-27
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Granted: 1934-10-23
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Expires: 1948-09-27
Abstract
No abstract record available.
Inventors
- 👤 Hailwood Anthony James
- 👤 Naunton William Johnson Smith
- 👤 Shepherdson Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:44
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/79; D06P3/793; C; C08; C08K; C08K9/00; C08K9/04; C09; C09B; C09B67/00; C09B67/0071; C09B67/0077
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) | 1937-10-22 | 1938-04-23 | 1938-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-22 | 1942-04-23 | 1942-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-22 | 1946-04-23 | 1946-10-23 | $7700.00 | Window Closed / Lapsed |