US3510246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of cellulosic fibers with certain quaternary ammonium compounds
Assignee: General Mills Inc
•
Filing: 1967-02-08
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Granted: 1970-05-05
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Expires: 1987-02-08
Abstract
No abstract record available.
Inventors
- 👤 James L Keen
- 👤 Lyle F Elmquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:32
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/385
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2131120A
Cited
US2252039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |