US3394027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single bath process for prussian bluepigmenting of cellulosic webbing to render it alkali-and algae-resistant
Assignee: United States Department of Agriculture
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Filing: 1964-12-30
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Granted: 1968-07-23
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Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 Charles J Conner
- 👤 Gary S Danna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:34
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/0076; D06P1/90; D06P1/92; D06P1/928; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T442/00; Y10T442/20; Y10T442/2525; Y10T442/2549; Y10T442/2574
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |