US3778294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polymers with a fibrous structure
Assignee: BASF SE
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Filing: 1971-09-22
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Granted: 1973-12-11
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Expires: 1991-09-22
Abstract
Abstract POLYMERS HAVING A FIBROUS STRUCTURE ARE OBTAINED BY THE POLYMERIZATION OF SOLUTIONS AND/OR EMULSIONS OR DISPERSIONS FULLY OR PARTIALLY SOLIDIFIED IN CRYSTALLINE FORM, OF ETHYLENICALLY UNSATURATED MONOMERS WITH AT LEAST TWO POLYMERIZABLE DOUBLE BONDS OR MIXTURES CONTAINING AT LEAST 0.01% WEIGHT OF THESE MONOMERS AND MONOETHYLENICALLY UNSATURATED MONOMERS BY IRRADIATION, WHICH POLYMERS CAN BE OBTAINED IN THE FORM OF NOVEL POROUS MATERIALS(=POROMERIC MATERIALS) HAVING PROPERTIES SIMILAR TO LEATHER.
Inventors
- 👤 C Krauch
- 👤 A Sanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:00
CPC Classifications
D; D06; D06M; D06M14/00; D06M14/18; C; C08; C08F; C08F2/00; C08F2/46; C08F291/00; C08F291/18; C08F36/00; C08F36/02; C08F36/20; Y; Y10; Y10S; Y10S521/00; Y10S521/915; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24438; Y10T428/31504; Y10T428/31786; Y10T428/31855; Y10T428/31938; Y10T442/00; Y10T442/20; Y10T442/2861
Claims Analysis
Total Claims: 0
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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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |