US3833708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immiscible polymer products and processes
Assignee: Union Carbide Corp
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Filing: 1972-08-04
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Granted: 1974-09-03
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Expires: 1992-08-04
Abstract
Abstract THE INVENTION RELATES TO MAKING SHAPED ARTICLES OF IMMISICBLE POLYMERS USING AS ONE OF THE POLYMERS, A COPOLYMER OF EHYLENE AND ACRYLIC AND/OR METHACRYLIC ACID WHICH CAN BE READILY SOLUBILIZED AT ALLOW ITS RAPID EXTRACTION IWT WATER. THESE MAY ALSO BE ADDED IN AN EXTRACTION AID, SUCH AS GLYCERINE, IN MAKING THE SHAPED ARTICLE. THE WATER EXTRACTED PRODUCT CAN BE A TOW OR WEB OF ULTRA-FINE FIBERS.
Inventors
- 👤 W Miller
- 👤 W Mulvaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:01
CPC Classifications
D; D04; D04H; D04H13/00; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0869; C08L75/00; C08L75/04; D01; D01D; D01D5/00; D01D5/42; D01D5/423; C08L77/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24124
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |