US3677404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving bed filtration method
Assignee: Procedyne Corp
•
Filing: 1970-11-25
•
Granted: 1972-07-18
•
Expires: 1990-11-25
Abstract
Abstract Apparatus utilizing a continuously-moving, continuouslyregenerated filtration bed of granular material to filter materials that tend to obstruct porous media, operating in conjunction with a fluidized solids bed incinerator.
Inventors
- 👤 Herbert Kenneth Staffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:52
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/001; F23G5/00; F23G5/30; Y; Y02; Y02W; Y02W10/00; Y02W10/40
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
18 words
The method according to claim 1 comprising the further step of separating the ash and gases of combustion.
Claim 2
Dependent Claim
18 words
The method in accordance with claim 2, comprising the further step of collecting the ash for non-pollutive disposal.
Claim 3
Dependent Claim
27 words
The method in accordance with claim 1, comprising the further step of preheating the particles, solids and residual liquid prior to transfer thereof to the incinerating means.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |