US3293174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plant and processes for the treatment of effluent and sewage
Assignee: Imperial Chemical Industries Ltd
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Filing: 1963-03-08
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Granted: 1966-12-20
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Expires: 1983-03-08
Abstract
No abstract record available.
Inventors
- 👤 Robjohns Cyril Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:41
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/30; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1669; B01D39/1676; C; C02; C02F; C02F3/00; C02F3/02; C02F3/04; C02F3/10; C02F3/101; C02F3/103; B01J2219/00; B01J2219/30; B01J2219/302; B01J2219/30207; B01J2219/30211; B01J2219/30215; B01J2219/30223; B01J2219/30226; B01J2219/30246; B01J2219/30253; B01J2219/30273; B01J2219/304; B01J2219/30466; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S261/00; Y10S261/72
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A TRICKING FILTER UNIT COMPRISING IN COMBINATION, (A) MEANS TO SUPPORT A BED OF TRICKING FILTER MEDIA; (H) SAID BED OF TRICKLING FILTER MEDIA COMPRISING A MASS OF RANDOMLY ARRANGED, DISCRETE PIECES OF FOAMED INERT POLYMERIC MATERIAL, AND (C) MEANS OPERATIVELY ASSOCIATED WITH SAID MEANS TO SUPPORT SAID MEDIA TO PASS A LIQUID AND A GAS THROUGH SAID BED.
Claim 2
Dependent Claim
59 words
A TRICKING FILTER UNIT COMPRISING IN COMBINATION, (A) MEANS TO SUPPORT A BED OF TRICKING FILTER MEDIA; (H) SAID BED OF TRICKLING FILTER MEDIA COMPRISING A MASS OF RANDOMLY ARRANGED, DISCRETE PIECES OF FOAMED INERT POLYMERIC MATERIAL, AND (C) MEANS OPERATIVELY ASSOCIATED WITH SAID MEANS TO SUPPORT SAID MEDIA TO PASS A LIQUID AND A GAS THROUGH SAID BED.
Claim 3
Dependent Claim
56 words
A PROCESS FOR TREATMENT OF LIQUID EFFLUENT AND SEWAGE COMPRISING A PASSING LIQUID EFFLUENT THROUGH A BED OF RANDOMLY ARRANGED DISCRETE PIECES OF INERT FOAMED POLYMERIC MATERIAL PACKING WHICH CONTAINS ON THE SURFACE THEREOF BIOLOGICALLY ACTIVE AEROBIC MICROORGANISMS AND PASSING AIR UP THROUGH THE BED, WHEREBY THE ORGANIC CONTENT OF THE LIQUID EFFLUENT IS BIOLOGICALLY OXIDIZED.
Claim 4
Dependent Claim
56 words
A PROCESS FOR TREATMENT OF LIQUID EFFLUENT AND SEWAGE COMPRISING A PASSING LIQUID EFFLUENT THROUGH A BED OF RANDOMLY ARRANGED DISCRETE PIECES OF INERT FOAMED POLYMERIC MATERIAL PACKING WHICH CONTAINS ON THE SURFACE THEREOF BIOLOGICALLY ACTIVE AEROBIC MICROORGANISMS AND PASSING AIR UP THROUGH THE BED, WHEREBY THE ORGANIC CONTENT OF THE LIQUID EFFLUENT IS BIOLOGICALLY OXIDIZED.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |