US2087866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vat dyestuff preparations
Assignee: EIDP Inc
•
Filing: 1937-03-17
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Granted: 1937-07-20
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Expires: 1957-03-17
Abstract
No abstract record available.
Inventors
- 👤 Henry J Weiland
- 👤 Stallmann Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:36
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C09B67/0085; C09B67/0086; C09B67/0077; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04
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) | 1940-07-19 | 1941-01-18 | 1941-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-19 | 1945-01-18 | 1945-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-19 | 1949-01-18 | 1949-07-20 | $7700.00 | Window Closed / Lapsed |