Patent US2465773A successfully refreshed from Google Patents.
US2465773A
Expired / Lapsed
US
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Process of producing a catalytic article
Assignee: EIDP Inc
•
Filing: 1947-02-21
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Granted: 1949-03-29
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Expires: 1967-02-21
Abstract
No abstract record available.
Inventors
- 👤 Christian J Wernlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:39
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/835; B01J37/00; B01J37/34; B01J37/348; C; C01; C01B; C01B13/00; C01B13/02; C01B13/0203; C01B13/0211; C01B13/0214; C25; C25D; C25D11/00; C25D11/02; C25D11/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1519035A
Cited
US2042451A
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US2057274A
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GB421696A
Cited
US2208616A
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US2315518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |