US3421923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for flame-proofing of cellulose-containing textiles
Assignee: BASF Schweiz AG
•
Filing: 1965-06-22
•
Granted: 1969-01-14
•
Expires: 1985-06-22
Abstract
No abstract record available.
Inventors
- 👤 Christian Guth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:58
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/431; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/2697; Y10T442/2705
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2464342A
Cited
US2416447A
Cited
US2763574A
Cited
US2809941A
Cited
US2772188A
Cited
US3323939A
Cited
US3309165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |