US3390102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction-activation of copper oxidezinc oxide low temperature shift catalysts
Assignee: Catalysts and Chemicals Inc
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Filing: 1966-12-01
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Granted: 1968-06-25
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Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Ronald E Reitmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/80; C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB311737A
Cited
US1797426A
Cited
US1908696A
Cited
US2103219A
Cited
US2275181A
Cited
GB636800A
Cited
GB835751A
Cited
US3303001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |