US3436304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing nonwoven fibrous products from gel fibers
Assignee: Dow Chemical Co
•
Filing: 1966-07-26
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Granted: 1969-04-01
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Expires: 1986-07-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Spence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:54
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/20; D21H5/205; D04; D04H; D04H3/00; D04H3/08; D04H3/16; D21H13/00; D21H13/10; D21H13/12; D21H13/18; Y; Y10; Y10T; Y10T442/00; Y10T442/60; Y10T442/69
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2784135A
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US2970079A
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US2999788A
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US3047455A
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US3039913A
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US3223581A
Cited
US3264170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |