US3301769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfermentor and process of using
Assignee: Pharmacia and Upjohn Co
•
Filing: 1964-09-28
•
Granted: 1967-01-31
•
Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Steel Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:41
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/02; C12M23/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
56 words
A MICROFERMENTOR FOR CULTIVAING MICROORGANISMS IN A LIQUID NUTRIENT MEDIUM WHICH COMPRISES (A) AN OPEN-ENDED RIGID SOLID WALL CYLINDER HAVING A LIQUID CAPACITY OF FROM 1 TO 100 ML., AND, (B) A MEMBRANE, HAVING A THICKNESS OF FROM 0.25 MIL, PERMEABLE TO RESPIRATORY GASSES, BUT RELATIVELY IMPERMEABLE TO FERMENTATION LIQUIDS, COVEING BOTH ENDS OF SAID CYLINDER.
Claim 2
Dependent Claim
56 words
A MICROFERMENTOR FOR CULTIVAING MICROORGANISMS IN A LIQUID NUTRIENT MEDIUM WHICH COMPRISES (A) AN OPEN-ENDED RIGID SOLID WALL CYLINDER HAVING A LIQUID CAPACITY OF FROM 1 TO 100 ML., AND, (B) A MEMBRANE, HAVING A THICKNESS OF FROM 0.25 MIL, PERMEABLE TO RESPIRATORY GASSES, BUT RELATIVELY IMPERMEABLE TO FERMENTATION LIQUIDS, COVEING BOTH ENDS OF SAID CYLINDER.
Claim 3
Dependent Claim
81 words
A PROCESS FOR THE PRODUCTION OF AN ANTIBIOTIC BY A FERMENTATION WHICH COMPRISES CULTIVATING THE ANTIBIOTICPRODUCING MICROORGANISMS IN A RIGID CYLINDRICAL MICROFERMENTOR, WHICH COMPRISES 7A) AN OPEN-ENDED RIGID SOLID WALL CYLINDER HAVING A LIQUID CAPACITY OF FROM 1 TO 100 ML., AND (B) A MEMBRANE, HAVING A THICKNESS OF FROM 0.25 MIL TO 25 MIL, PERMEABLE TO RESPIRTORY GASSES, BUT RELATIVELY IMPERMEABLE TO FERMENTATION LIQUIDS, COVERING BOTH ENDS OF SAID CYLINDER; PERMITTING THE ANTIBOIOTIC TO ACCUMULATE AND ASSAYING FOR SAID ANTIBIOTIC.
Claim 4
Dependent Claim
81 words
A PROCESS FOR THE PRODUCTION OF AN ANTIBIOTIC BY A FERMENTATION WHICH COMPRISES CULTIVATING THE ANTIBIOTICPRODUCING MICROORGANISMS IN A RIGID CYLINDRICAL MICROFERMENTOR, WHICH COMPRISES 7A) AN OPEN-ENDED RIGID SOLID WALL CYLINDER HAVING A LIQUID CAPACITY OF FROM 1 TO 100 ML., AND (B) A MEMBRANE, HAVING A THICKNESS OF FROM 0.25 MIL TO 25 MIL, PERMEABLE TO RESPIRTORY GASSES, BUT RELATIVELY IMPERMEABLE TO FERMENTATION LIQUIDS, COVERING BOTH ENDS OF SAID CYLINDER; PERMITTING THE ANTIBOIOTIC TO ACCUMULATE AND ASSAYING FOR SAID ANTIBIOTIC.
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |