US3352800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous synthetic ion exchange catalysts and preparation thereof
Assignee: Mobil Oil AS
•
Filing: 1963-12-30
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Granted: 1967-11-14
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 Robert B Smith
- 👤 William E Garwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:49
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; C08L; C08L61/00; C08L61/04; C08L61/06; C08L25/00; C08L25/02; C08L25/04; C08L25/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD FOR PRODUCING AN ION EXCHANGE RESIN THAT COMPRISES FORMING A SYNTHETIC AROMATIC POLYMER SELECTED FROM THE GROUP CONSISTING OF PHENOLIC-ALDEHYDE RESINS, CRACKING COKE, AND CROSS-LINKED VINYL AROMATIC POLYMERS IN AND ON A THREE-DIMENSIONAL CRYSTALLINE ALUMINOSILICATE, LEACHING OUT AT LEAST A PART OF THE ALUMINA CONTENT WITH STRONG MINERAL ACID, AND INTRODUCING IONIC GROUPS INTO THE POLYMER.
Claim 2
Independent Claim
58 words
A METHOD FOR PRODUCING AN ION EXCHANGE RESIN THAT COMPRISES FORMING A SYNTHETIC AROMATIC POLYMER SELECTED FROM THE GROUP CONSISTING OF PHENOLIC-ALDEHYDE RESINS, CRACKING COKE, AND CROSS-LINKED VINYL AROMATIC POLYMERS IN AND ON A THREE-DIMENSIONAL CRYSTALLINE ALUMINOSILICATE, LEACHING OUT AT LEAST A PART OF THE ALUMINA CONTENT WITH STRONG MINERAL ACID, AND INTRODUCING IONIC GROUPS INTO THE POLYMER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |