US3322505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating substances in several stages
Assignee: Dorr Oliver Inc
•
Filing: 1965-01-06
•
Granted: 1967-05-30
•
Expires: 1985-01-06
Abstract
No abstract record available.
Inventors
- 👤 William C Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:56
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1862; B01J16/00; C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/22; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00121; B01J2219/00164; B01J2219/00189
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A TREATMENT VESSEL HAVING A BOTTOM SURROUNDED BY A SUBSTANTIALLY UPRIGHT OUTER CYLINDRICAL WALL AND A SUBSTANTIALLY UPRIGHT INNER CYLINDRICAL WALL UPSTANDING FROM SAID BOTTOM AND SUBSTANTIALLY CONCENTRIC WITH SAID OUTER WALL TO DEFINE AN INNER COMPARTMENT SURROUINDED BY AN ANNULAR OUTER COMPARTMENT BETWEEN SAID INNER AND OUTER WALLS; AGITATION DEVICES ARRANGED AT SPACED INTERVALS IN SAID OUTER COMPARTMENT AND OPERABLE TO PROVIDE A SERIES OF AGITATION ZONES SURROUNDING SAID INNER COMPARTMENT; PARTITION MEANS IN SAID OUTER COMPARTMENT EXTENDING BETWEEN SAID INNER AND OUTER WALLS; MEAMS FOR INTRODUCING AT LEAST ONE SUBSTANCE TO BE TREATED INTO A FIRST AGITATION
Claim 2
Dependent Claim
99 words
A TREATMENT VESSEL HAVING A BOTTOM SURROUNDED BY A SUBSTANTIALLY UPRIGHT OUTER CYLINDRICAL WALL AND A SUBSTANTIALLY UPRIGHT INNER CYLINDRICAL WALL UPSTANDING FROM SAID BOTTOM AND SUBSTANTIALLY CONCENTRIC WITH SAID OUTER WALL TO DEFINE AN INNER COMPARTMENT SURROUINDED BY AN ANNULAR OUTER COMPARTMENT BETWEEN SAID INNER AND OUTER WALLS; AGITATION DEVICES ARRANGED AT SPACED INTERVALS IN SAID OUTER COMPARTMENT AND OPERABLE TO PROVIDE A SERIES OF AGITATION ZONES SURROUNDING SAID INNER COMPARTMENT; PARTITION MEANS IN SAID OUTER COMPARTMENT EXTENDING BETWEEN SAID INNER AND OUTER WALLS; MEAMS FOR INTRODUCING AT LEAST ONE SUBSTANCE TO BE TREATED INTO A FIRST AGITATION
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |