US3462383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet strength additives for cellulosic products
Assignee: Dow Chemical Co
•
Filing: 1966-03-07
•
Granted: 1969-08-19
•
Expires: 1986-03-07
Abstract
No abstract record available.
Inventors
- 👤 Juan Longoria
- 👤 Greene W Strother Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:10
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; C; C08; C08G; C08G59/00; C08G59/02; C08G59/10; C08G59/18; C08G59/40; C08G59/50; C08G59/5006; C08G65/00; C08G65/02; C08G65/26; C08G65/2618; C08G65/2621; C08G65/2624; C08G73/00; C08G73/02; C08G73/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |