US2021131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition
Assignee: —
•
Filing: —
•
Granted: 1935-11-19
•
Expires: 1952-11-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:56
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/25; A61K31/00; A61K31/045; A61K31/047; A61K31/185; A61K31/19; A61K31/20; A61K8/30; A61K8/31; A61K8/33; A61K8/36; A61K8/361; A61K8/96; A61K8/97; A61K8/9783; A61K8/9789; A61Q; A61Q17/00; A61Q19/00
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) | 1938-11-18 | 1939-05-20 | 1939-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-18 | 1943-05-20 | 1943-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-18 | 1947-05-20 | 1947-11-19 | $7700.00 | Window Closed / Lapsed |