US3444200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aryl-alkyl quaternary ammonium compounds
Assignee: Armour Industrial Chemical Co
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Filing: 1965-10-21
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Granted: 1969-05-13
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Miller Jr
- 👤 Harlan E Tiefenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:20
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/17; C; C07; C07C; C07C51/00; C07C51/347; C07C51/353; D06M13/00; D06M13/322; D06M13/46; D06M13/463
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) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |