US3518113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane latices as paper-making additives
Assignee: Wyandotte Chemicals Corp
•
Filing: 1966-12-05
•
Granted: 1970-06-30
•
Expires: 1986-12-05
Abstract
No abstract record available.
Inventors
- 👤 Ian C Macgugan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:56
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; D21H17/57; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0838; C08G18/0842; C08G18/0861; C08G18/0866; C08G18/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3061475A
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US3213049A
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US3310533A
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US3178310A
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US3215652A
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US3385829A
Cited
US3373128A
Cited
US3346445A
Cited
US3372085A
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US3410817A
Cited
US3401133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |