US3691097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uniform composite structures of catalyst and fibrous refractory
Assignee: EIDP Inc
•
Filing: 1970-06-15
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Granted: 1972-09-12
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Expires: 1990-06-15
Abstract
Abstract This invention relates to paper-like catalytic structures which are comprised of a catalytic material uniformly distributed throughout a porous fibrous support material. The paper-like catalytic structure can also include a cement or a filler material if desired. This invention also relates to the process of preparing said paper-like catalytic structures.
Inventors
- 👤 Alvin B Stiles
- 👤 Joseph Angelo Floria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:25
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/50; B01J35/58
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
36 words
The process of claim 1 wherein the fibrous support material is selected from the group consisting of glass wool, rock wook, fibrous ceramic alumina, quartz fibers, refractory metallic filaments, zirconia fibers, sillimanite fibers or asbestos fibers.
Claim 2
Dependent Claim
29 words
The process of claim 1 wherein the cement is selected from the group consisting of calcium aluminate, magnesia cement, portland cement, anhydrous calcium sulfate, hydraulic cement and collodial silica.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein the filler is selected from the group consisting of kieselguhr, diaspore, alumina, bauxite, aluminum hydroxide, magnesium hydroxide, bentonite and montmorillonite.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |