Patent US3795730A successfully refreshed from Google Patents.
US3795730A
Expired / Lapsed
US
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Carbon adsorption-reduction process for nitric oxides
Assignee: Individual
•
Filing: 1971-03-29
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Granted: 1974-03-05
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Expires: 1991-03-29
Abstract
Abstract NITROGEN OXIDES ARE ADSORBED FROM GAS MIXTURES CONTAINING THEM BY ADSORBENT CARBON IN WHICH THERE IS DISPERSED INTERMETALLIC METAL OR METAL OXIDE AT A TEMPERATURE OF ABOUT 100*C., AND SUBSEQUENTLY REDUCED AT A TEMPERATURE OF ABOUT 300*C., WITH RECYCLING FOR REUSE THE ADSORBENT MATERIALS.
Inventors
- 👤 J Kalvinskas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |