US2085528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of coloring compositions
Assignee: Celluloid Corp
•
Filing: 1934-11-09
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Granted: 1937-06-29
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Expires: 1954-11-09
Abstract
No abstract record available.
Inventors
- 👤 Ernst Alexander Grenquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:59
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; C08J3/205; C08J3/2053; C09; C09D; C09D17/00; C09D17/002; C08J2401/00; C08J2401/08; C08J2401/16; C08J2401/18
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) | 1940-06-28 | 1940-12-28 | 1941-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-06-28 | 1944-12-28 | 1945-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-06-28 | 1948-12-28 | 1949-06-29 | $7700.00 | Window Closed / Lapsed |