US3756784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for composting
Assignee: INT COMBUSTION Ltd
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Filing: 1970-07-06
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Granted: 1973-09-04
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Expires: 1990-07-06
Abstract
Abstract APPARATUS FOR COMPOSTING WASTE MATERIAL BY AEROBIC ACTION COMPRISES A SERIES OF SUPERPOSED CHAMBERS. MATERIAL TO BE COMPOSTED IS LOADED INTO THE UPPERMOST CHAMBER AND PASSES INTO THE LOWER CHAMBERS IN TURN VIA CONTROLLED TRANSFER PORTS. EACH CHAMBER GAS ITS OWN WATER AND AIR SUPPLY AND AN AGITATOR FOR STIRRING MATERIAL IN THE CHAMBER.
Inventors
- 👤 A Pittwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:58
CPC Classifications
C; C12; C12M; C12M21/00; C12M21/16; C05; C05F; C05F17/00; C05F17/90; C05F17/95; C05F17/955; C12M23/00; C12M23/34; C12M41/00; C12M41/30; C12M41/34; Y; Y02; Y02P; Y02P20/00; Y02P20/141; Y02P20/145; Y02W; Y02W30/00; Y02W30/40; Y10; Y10S; Y10S4/00; Y10S4/12; Y10S71/00; Y10S71/901
Claims Analysis
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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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |