Patent US3404022A successfully refreshed from Google Patents.
US3404022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for flameproofing cellulosic material
Assignee: United States Department of Agriculture
•
Filing: 1965-03-26
•
Granted: 1968-10-01
•
Expires: 1985-03-26
Abstract
No abstract record available.
Inventors
- 👤 Leon H Chance
- 👤 Jr George L Drake
- 👤 Wilson A Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:56
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/285
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |