Patent US3207700A successfully refreshed from Google Patents.
US3207700A
Expired / Lapsed
US
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Silver oxidation catalyst and catalyst support structure
Assignee: Halcon Research and Development Corp
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Filing: 1960-03-24
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Granted: 1965-09-21
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Expires: 1980-03-24
Abstract
No abstract record available.
Inventors
- 👤 Saffer Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:16
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/024; B01J23/00; B01J23/38; B01J23/48; B01J23/50; B01J37/0215; B01J37/0221; C; C07; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/04; C07D301/08; C07D301/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A SUPPORTED CATALYST WHICH CONSISTS ESSENTIALLY OF A SILVER CATALYST AND A CATALYST SUPPORT HAVING (1) A METALLIC OXIDE OUTER MARGIN HAVING A THICKNESS OF 1/32" AND 1/2" AND A POROSITY OF 15 TO 40% AND (2) A REFRACTORY CORE HAVING A POROSITY OF 0 TO 10%, SAID CATALYST BEING IMPREGNATED SUBSTANTIALLY ONLY IN SAID OUTER MARGIN.
Claim 2
Dependent Claim
57 words
A SUPPORTED CATALYST WHICH CONSISTS ESSENTIALLY OF A SILVER CATALYST AND A CATALYST SUPPORT HAVING (1) A METALLIC OXIDE OUTER MARGIN HAVING A THICKNESS OF 1/32" AND 1/2" AND A POROSITY OF 15 TO 40% AND (2) A REFRACTORY CORE HAVING A POROSITY OF 0 TO 10%, SAID CATALYST BEING IMPREGNATED SUBSTANTIALLY ONLY IN SAID OUTER MARGIN.
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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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |