Patent US3236744A successfully refreshed from Google Patents.
US3236744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yeast fermentation apparatus
Assignee: Ebara Corp
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Filing: 1963-10-23
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Granted: 1966-02-22
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Yamaha Mashio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:54
CPC Classifications
C; C12; C12M; C12M27/00; C12M27/02; C12M27/18; C12M27/22; C12M27/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
YEAST FERMENTATION APPARATUS COMPRISING A TANK BODY ADAPTED FOR CONTAINING A FERMENTABLE SUBSTANCE, A DRAFT TUBE MOUNTED CENTRALLY IN SAID BODY FOR THE CIRCULATION OF SAID SUBSTANCE THERETHROUGH, SAID DRAFT TUBE INCLUDING AN ADJUSTABLE SECURED LOWER TUBE PORTION WHICH IS SPACED FROM THE TANK BODY AND WHICH IS EXTENSIBLE AND RETRACTABLE IN VARYING MAGNITUDE WITH RESPECT TO SAID DRAFT TUBE, A ROTATABLE CIRCULATING IMPELLER IN SAID TANK BODY POSITIONED BENEATH THE LOWER TUBE PORTION IN SPACED RELATION THEREWITH TO DEFINE A GAP THEREBETWEEN, AND AERATION MEANS FOR SUPPLYING OXYGEN-CONTAINING GAS INTO THE TANK BODY BENEATH SAID IMPELLER, THE SAID LOWER TUBE PORTION BEING ADJUSTABLE IN POSITION TO VARY THE SIZE OF THE GAP BETWEEN THE IMPELLER AND THE LOWER TUBE PORTION.
Claim 2
Dependent Claim
121 words
YEAST FERMENTATION APPARATUS COMPRISING A TANK BODY ADAPTED FOR CONTAINING A FERMENTABLE SUBSTANCE, A DRAFT TUBE MOUNTED CENTRALLY IN SAID BODY FOR THE CIRCULATION OF SAID SUBSTANCE THERETHROUGH, SAID DRAFT TUBE INCLUDING AN ADJUSTABLE SECURED LOWER TUBE PORTION WHICH IS SPACED FROM THE TANK BODY AND WHICH IS EXTENSIBLE AND RETRACTABLE IN VARYING MAGNITUDE WITH RESPECT TO SAID DRAFT TUBE, A ROTATABLE CIRCULATING IMPELLER IN SAID TANK BODY POSITIONED BENEATH THE LOWER TUBE PORTION IN SPACED RELATION THEREWITH TO DEFINE A GAP THEREBETWEEN, AND AERATION MEANS FOR SUPPLYING OXYGEN-CONTAINING GAS INTO THE TANK BODY BENEATH SAID IMPELLER, THE SAID LOWER TUBE PORTION BEING ADJUSTABLE IN POSITION TO VARY THE SIZE OF THE GAP BETWEEN THE IMPELLER AND THE LOWER TUBE PORTION.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |