US3420735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet-strength resins and a process for improving the wet-strength of paper
Assignee: Kimberly Clark Tissue Co
•
Filing: 1967-03-31
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Granted: 1969-01-07
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Expires: 1987-03-31
Abstract
No abstract record available.
Inventors
- 👤 John S Conte
- 👤 Robert W Faessinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:45
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; D21H17/57; C; C08; C08G; C08G12/00; C08G12/46; C08G69/00; C08G69/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371997A
Cited
US2683134A
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US2885318A
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US2926116A
Cited
US3006896A
Cited
US2948652A
Cited
US3275605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |