US3489820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic fibers from emulsion polymers
Assignee: Dow Chemical Co
•
Filing: 1967-03-24
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Granted: 1970-01-13
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Expires: 1987-03-24
Abstract
No abstract record available.
Inventors
- 👤 Walter A Henson
- 👤 Robert E Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:45
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0078; D; D01; D01F; D01F6/00; D01F6/58; D01F6/72; D01F6/78; D01F6/88; D01F6/94; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/731
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2376511A
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US2963340A
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US2914376A
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US2955017A
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GB915031A
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US3256234A
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US3055729A
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US3233026A
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US3144426A
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US3215647A
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US3345206A
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 |