US3489719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment of finely-divided water-soluble polymers
Assignee: Dow Chemical Co
•
Filing: 1967-07-05
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Granted: 1970-01-13
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Expires: 1987-07-05
Abstract
No abstract record available.
Inventors
- 👤 Albert B Savage
- 👤 Ronald L Glomski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:23
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/124; C02; C02F; C02F1/00; C02F1/52; C02F1/5227; C08J2300/00; C08J2300/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2475846A
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US2486192A
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US2647064A
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GB738047A
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US2761834A
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US2879268A
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US3072635A
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US3297583A
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GB1070398A
Cited
US3402137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |