US2689818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pure culture method and apparatus
Assignee: Metal-Glass Products Co
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Filing: 1951-06-23
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Granted: 1954-09-21
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Expires: 1971-06-23
Abstract
No abstract record available.
Inventors
- 👤 Albert M Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:01
CPC Classifications
C; C12; C12C; C12C11/00; C12M; C12M23/00; C12M23/58; C12M37/00; C12M37/02; C12M41/00; C12M41/12; C12M41/18; C12M41/22; C12N; C12N1/00; C12N1/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
IN A PROCESS FOR PROPAGATING A CULTURE OF A SELECTED PURE STRAIN OF MICRO-ORGANISMS IN A SUITABLE, LIQUID, CULTURE MEDIUM, THE STEPS WHICH INCLUDE: HEATING A QUANTITY OF SAID CULTURE MEDIUM TO A TEMPERATURE SUFFICIENT TO STERILIZE SAID CULTURE MEDIUM; PROPAGATING A QUANTITY OF SAID SELECTED MICRO-ORGANISMS IN A CULTURE MEDIUM CONTAINING GROWTH STIMULATING VITAMINS WHEREIN SAID MICRO-ORGANISMS WILL ABSORB SAID GROWTH STIMULATING VITAMINS; INTRODUCING SAID QUANTITY OF SAID MICRO-ORGANISMS INTO SAID HOT, STERILE, CULTURE MEDIUM; MAINTAINING THE TEMPERATURE OF SAID HOT, CULTURE MEDIUM, AFTER INTRODUCTION OF SAID MICRO-ORGANISMS, HIGH ENOUGH AND FOR A LONG ENOUGH PERIOD OF TIME TO CAUSE SAID MICORORGANISMS TO RELEASE SAID GROWTH STIMULATING VITAMINS BY PLASMOLYSIS; COOLING SAID CULTURE MEDIUM; INTRODUCING AN INOCULUM OF SAID SELECTED MICRO-ORGANISMS INTO SAID COOLED CULTURE MEDIUM.
Claim 2
Dependent Claim
127 words
IN A PROCESS FOR PROPAGATING A CULTURE OF A SELECTED PURE STRAIN OF MICRO-ORGANISMS IN A SUITABLE, LIQUID, CULTURE MEDIUM, THE STEPS WHICH INCLUDE: HEATING A QUANTITY OF SAID CULTURE MEDIUM TO A TEMPERATURE SUFFICIENT TO STERILIZE SAID CULTURE MEDIUM; PROPAGATING A QUANTITY OF SAID SELECTED MICRO-ORGANISMS IN A CULTURE MEDIUM CONTAINING GROWTH STIMULATING VITAMINS WHEREIN SAID MICRO-ORGANISMS WILL ABSORB SAID GROWTH STIMULATING VITAMINS; INTRODUCING SAID QUANTITY OF SAID MICRO-ORGANISMS INTO SAID HOT, STERILE, CULTURE MEDIUM; MAINTAINING THE TEMPERATURE OF SAID HOT, CULTURE MEDIUM, AFTER INTRODUCTION OF SAID MICRO-ORGANISMS, HIGH ENOUGH AND FOR A LONG ENOUGH PERIOD OF TIME TO CAUSE SAID MICORORGANISMS TO RELEASE SAID GROWTH STIMULATING VITAMINS BY PLASMOLYSIS; COOLING SAID CULTURE MEDIUM; INTRODUCING AN INOCULUM OF SAID SELECTED MICRO-ORGANISMS INTO SAID COOLED CULTURE MEDIUM.
Claim 3
Dependent Claim
118 words
IN APPRARTUS FOR PROPAGATING A CULTURE OF A SELECTED PURE STRAIN OF MICRO-ORGANISMS IN A SUITABLE LIQUID CULTURE MEDIUM THE COMBINATION COMPRISING: A FIRST VESSEL HAVING AN ENCLOSED CENTRAL CHAMBER; A SECOND VESSEL HAVING AN ENCLOSED CENTRAL CHAMBER; MEANS FOR HEATING SAID FIRST VESSEL; MEANS FOR INTRODUCING SAID LIQUID MEDIUM INTO SAID FIRST VESSEL; A PIPE COMMUNICATING AT ONE OF ITS ENDS WITH SAID FIRST VESSEL AND AT THE OTHER OF ITS ENDS COMMUNICATING WITH SAID SECOND VESSEL; A FILTER INTERMEDIATE THE ENDS OF SAID PIPE; A SECOND PIPE COMMUNICATING WITH SAID FIRST PIPE ADJACENT EACH END OF SAID FILTER; A VALVE AT EACH END OF SAID SECOND PIPE FOR CONNECTING SAID SECOND PIPE TO SAID FIRST PIPE.
Claim 4
Dependent Claim
118 words
IN APPRARTUS FOR PROPAGATING A CULTURE OF A SELECTED PURE STRAIN OF MICRO-ORGANISMS IN A SUITABLE LIQUID CULTURE MEDIUM THE COMBINATION COMPRISING: A FIRST VESSEL HAVING AN ENCLOSED CENTRAL CHAMBER; A SECOND VESSEL HAVING AN ENCLOSED CENTRAL CHAMBER; MEANS FOR HEATING SAID FIRST VESSEL; MEANS FOR INTRODUCING SAID LIQUID MEDIUM INTO SAID FIRST VESSEL; A PIPE COMMUNICATING AT ONE OF ITS ENDS WITH SAID FIRST VESSEL AND AT THE OTHER OF ITS ENDS COMMUNICATING WITH SAID SECOND VESSEL; A FILTER INTERMEDIATE THE ENDS OF SAID PIPE; A SECOND PIPE COMMUNICATING WITH SAID FIRST PIPE ADJACENT EACH END OF SAID FILTER; A VALVE AT EACH END OF SAID SECOND PIPE FOR CONNECTING SAID SECOND PIPE TO SAID FIRST PIPE.
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) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |