Patent US3273316A successfully refreshed from Google Patents.
US3273316A
Expired / Lapsed
US
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Industrial waste gas purifier method
Assignee: SHUFFMAN ROSE
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Filing: 1964-02-03
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Granted: 1966-09-20
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Expires: 1984-02-03
Abstract
No abstract record available.
Inventors
- 👤 Sigmund L Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:39
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D47/00; B01D47/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF PURIFYING INDUSTRIAL WASTE GASES WHICH INCLUDES FLOWING SUCH WASTE GASES UPWARDLY, SPRAYING WATER DOWNWARDLY, GASIFYING LIQUID NITROGEN IN CONTACT WITH SAID WATER SPRAY AND EXPANDING THE SO GASIFIED NITROGEN TO FORM ICE CRYSTALS FROM A PORTION OF SAID WATER SPRAY, SEPARATING SAID ICE CRYSTALS FROM THE ASCENDING GASES AND MOVING THE ASCENDING GASES IN CONTACT WITH MASSES OF SUCH SEPARATED ICE CRYSTAL, DRAINING AND REMOVING THE MELT FROM SUCH ICE CRYSTALS AND THE PORTION OF SAID WATER SPRAY WHICH HAS NOT BEEN CONVERTED INTO ICE CRYSTALS, AND EXHAUSTING THE RESULTANT GASES.
Claim 2
Independent Claim
94 words
THE METHOD OF PURIFYING INDUSTRIAL WASTE GASES WHICH INCLUDES FLOWING SUCH WASTE GASES UPWARDLY, SPRAYING WATER DOWNWARDLY, GASIFYING LIQUID NITROGEN IN CONTACT WITH SAID WATER SPRAY AND EXPANDING THE SO GASIFIED NITROGEN TO FORM ICE CRYSTALS FROM A PORTION OF SAID WATER SPRAY, SEPARATING SAID ICE CRYSTALS FROM THE ASCENDING GASES AND MOVING THE ASCENDING GASES IN CONTACT WITH MASSES OF SUCH SEPARATED ICE CRYSTAL, DRAINING AND REMOVING THE MELT FROM SUCH ICE CRYSTALS AND THE PORTION OF SAID WATER SPRAY WHICH HAS NOT BEEN CONVERTED INTO ICE CRYSTALS, AND EXHAUSTING THE RESULTANT GASES.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |