US3246959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for generating gas
Assignee: Individual
•
Filing: 1963-03-21
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Granted: 1966-04-19
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Expires: 1983-03-21
Abstract
No abstract record available.
Inventors
- 👤 John H Brewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:06
CPC Classifications
C; C12; C12M; C12M41/00; C12M41/30; C12M41/34; C12M23/00; C12M23/34; C12M29/00; C12M29/04; Y; Y10; Y10S; Y10S435/00; Y10S435/801; Y10S435/805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A DEVICE PROVIDING A NON-TOXIC ATMOSPHERIC FOR USE IN CULTURING ANAEROBIC MICROORGANISMS COMPRISING: AN ENVELOPE MADE OF A MATERIAL INERT TO THE CONTENTS THEREOF AND TO THE GAS GENERATED THEREIN AND UNAFFECTED BY THE HEAT OF REACTION OF THE HEREINAFTER MENTIONED GAS-GENERATING MATERIAL AND LIQUID, SAID ENVELOPE HAVING A FIRST LIQUID-RECEIVING CHAMBER AND A SECOND GAS-GENERATING CHAMBER AND MATERIAL DISPOSED IN SAID SECOND CHAMBER FOR GENERATING A GASEOUS ATMOSPHERE SUITABLE FOR CULTURING ANEROBIC MICROORGANISMS WHEN MIXED WITH A LIQUID, SAID ENVELOPE BEING PROVIDED WITH A PARTITION SEPARATING SAID CHAMBERS FROM EACH OTHER AND HAVING POROUS FLUID TRANSFER MEANS INCLUDING A WATER INLET PORTION AND A GAS EGRESS PORTION THROUGH WHICH THE LIQUID SLOWLY DIFFUSES FROM THE FIRST CHAMBER TO THE SECOND CHAMBER AT A CONTROLLED, RELATIVELY SLOW RATE TO REACT WITH THE MATERIAL TO GENERATE GAS AT A CONTROLED, RELATIVELY SLOW RATE AND THROUGH WHICH THE GAS WHICH IS EVOLVED IN THE SECOND CHAMBER MAY DIFFUSE IN AN OUTWARD DIRECTION, SAID FIRST CHAMBER BEING INITIALLY FREE FROM LIQUID ADJACENT THE POROUS TRANSFER MEANS AND HAVING A FRANGIBLE PORTION WHICH MAY BE RUPTURED TO AFFORD ACCROSS FOR THE LIQUID TO THE CHAMBER.
Claim 2
Independent Claim
191 words
A DEVICE PROVIDING A NON-TOXIC ATMOSPHERIC FOR USE IN CULTURING ANAEROBIC MICROORGANISMS COMPRISING: AN ENVELOPE MADE OF A MATERIAL INERT TO THE CONTENTS THEREOF AND TO THE GAS GENERATED THEREIN AND UNAFFECTED BY THE HEAT OF REACTION OF THE HEREINAFTER MENTIONED GAS-GENERATING MATERIAL AND LIQUID, SAID ENVELOPE HAVING A FIRST LIQUID-RECEIVING CHAMBER AND A SECOND GAS-GENERATING CHAMBER AND MATERIAL DISPOSED IN SAID SECOND CHAMBER FOR GENERATING A GASEOUS ATMOSPHERE SUITABLE FOR CULTURING ANEROBIC MICROORGANISMS WHEN MIXED WITH A LIQUID, SAID ENVELOPE BEING PROVIDED WITH A PARTITION SEPARATING SAID CHAMBERS FROM EACH OTHER AND HAVING POROUS FLUID TRANSFER MEANS INCLUDING A WATER INLET PORTION AND A GAS EGRESS PORTION THROUGH WHICH THE LIQUID SLOWLY DIFFUSES FROM THE FIRST CHAMBER TO THE SECOND CHAMBER AT A CONTROLLED, RELATIVELY SLOW RATE TO REACT WITH THE MATERIAL TO GENERATE GAS AT A CONTROLED, RELATIVELY SLOW RATE AND THROUGH WHICH THE GAS WHICH IS EVOLVED IN THE SECOND CHAMBER MAY DIFFUSE IN AN OUTWARD DIRECTION, SAID FIRST CHAMBER BEING INITIALLY FREE FROM LIQUID ADJACENT THE POROUS TRANSFER MEANS AND HAVING A FRANGIBLE PORTION WHICH MAY BE RUPTURED TO AFFORD ACCROSS FOR THE LIQUID TO THE CHAMBER.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |