US3775352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-polymer matrices and their preparation
Assignee: Shell USA Inc
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Filing: 1971-03-22
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Granted: 1973-11-27
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Expires: 1991-03-22
Abstract
Abstract HIGH SURFACE AREA ORGANIC MATRIX POLYMERS CONTAINING METALS OR METAL OXIDES ARE PRODUCED BY THERMALLY DECOMPOSING POROUS GROUP IIIB-VA METAL ION CHAIN-BRIDGED POLYMERIC CARBOXYLATES AT TEMPERATURES OF FROM ABOUT 100*C. TO 450*C. THE METAL-METAL OXIDE ORGANIC MATRIX POLYMERS THUS PRODUCED HAVE SURFACE AREAS AND PORE VOLUMES SIMILAR TO THOSE OF THE STARTING ION-LINKED POROUS POLYMERIC CARBOXYLATES AND ARE CHARACTERIZED BY METAL OR METAL OXIDE PRESENT AS EXTREMELY FINE (LESS THAN 2000 A.) PARTICLES. THE PRODUCTS ARE USEFUL IN APPLICATIONS WHERE FINE PARTICLES OF METAL ARE DESIRED, ESPECIALLY AS CATALYSTS.
Inventors
- 👤 W Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:21
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; B; B01; B01J; B01J37/00; B01J37/02; B01J37/024; C01; C01B; C01B13/00; C01B13/14; C01P; C01P2006/00; C01P2006/10; C01P2006/12; C01P2006/14; Y; Y10; Y10S; Y10S260/00; Y10S260/31; Y10S260/33; Y10S264/00; Y10S264/19
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |