US2735805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and retort arrangement for
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:54
CPC Classifications
C; C10; C10B; C10B53/00; C10B53/02; Y; Y02; Y02E; Y02E50/00; Y02E50/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
A METHOD FOR CARBONIZING SAWDUST AND COLLECTING WHICH COMPRISES THE STEPS OF PROGRESSIVELY DRYING THE SAWDUST WITH THE USED HEATING GASES ARISING OUT OF THE CARBONIZING RETORT WHILST THE SAWDUST IS DISPLACED TOWARDS THE INLET OF SAID RETORT, FORMING A SAWDUST ACCUMULATION AT SAID INLET AN PERHEATING THERE SAID SAWDUST, INTERMITTENTLY SUPPLYING SUCCESSIVE CHARGES OF SAWDUST INTO SAID RETORT AND SUBSTANTALLY VERTICALLY DISPLACING SAID SUCCESIVE SAWDUST CHARGES DOWNWARDLY TOWARDS THE OUTLET OF SAID RETORT AND DISCHARGING THROUGH SAID OUTLET SUCESSIVE INTERMITTENT CHARGES OF CARBONIZED SAWDUST AND COLLECTING AND WITHDRAWING DURING SAID CARBONIZATION BY MEANS OF A COLLECTOR DUCT ARRANGED IN SAID RETORT THE GASES PRODUCTED BY SAID CARBONIZATION IN SUBSTANTIALLY ALL TE ZONES OF SAID RETORT.
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) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |