Patent US293532A successfully refreshed from Google Patents.
US3333587A
Expired / Lapsed
US
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Cryosurgical device
Assignee: Union Carbide Corp
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Filing: 1965-01-28
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Granted: 1967-08-01
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Expires: 1985-01-28
Abstract
No abstract record available.
Inventors
- 👤 Robert D Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:52
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/02; A61F; A61F9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A CRYOSURGICAL DEVICE WHICH COMPRISES A THERMALLYINSULATED REFRIGERANT STORAGE CONTAINER HAVING A SEALABLE OPENING PROVIDING ACCESS TO THE INTERIOR OF THE CONTAINER FOR FILLING SAID CONTAINER WITH A VAPORIZABLE LIQUID REFRIGERANT; NON-METALLIC POROUS MATERIAL POSITIONED WITHIN THE INTERIOR OF SAID CONTAINER AND ADAPTED TO HOLD A VAPORIZABLE LIQUID REFRIGERANT IN THE LIQUID PHASE; A THERMALLYINSULATED PROBE CONNECTED TO SAID CONTAINER AND EXTENDING OUTWARDLY THEREFROM COMPRISING A HOLLOW, THERMALLYCONDUCTIVE TIP MEMBER, AN ENCLOSED REFRIGERANT SUPPLY TUBE EXTENDING FROM THE INTERIOR OF SAID CONTAINER INTO THE TIP MEMBER, AND AN ENCLOSED REFRIGERANT EXHAUST TUBE EXTENDING FROM SAID TIP MEMBER TO AN EXTERIOR OUTLET PROVIDED THEREOF IN A WALL OF SAID CONTAINER; AND A PRESSURIZING CONDUIT JOINED TO SAID CONTAINER IN FLUID COMMUNICATION WITH SAID NON-METALLIC POROUS MATERIAL FOR INTRODUCING PRESSURIZED FLUID TO VAPORIZE SAID LIQUID REFRIGERANT FOR FLOW TO SAID PROBE.
Claim 2
Dependent Claim
139 words
A CRYOSURGICAL DEVICE WHICH COMPRISES A THERMALLYINSULATED REFRIGERANT STORAGE CONTAINER HAVING A SEALABLE OPENING PROVIDING ACCESS TO THE INTERIOR OF THE CONTAINER FOR FILLING SAID CONTAINER WITH A VAPORIZABLE LIQUID REFRIGERANT; NON-METALLIC POROUS MATERIAL POSITIONED WITHIN THE INTERIOR OF SAID CONTAINER AND ADAPTED TO HOLD A VAPORIZABLE LIQUID REFRIGERANT IN THE LIQUID PHASE; A THERMALLYINSULATED PROBE CONNECTED TO SAID CONTAINER AND EXTENDING OUTWARDLY THEREFROM COMPRISING A HOLLOW, THERMALLYCONDUCTIVE TIP MEMBER, AN ENCLOSED REFRIGERANT SUPPLY TUBE EXTENDING FROM THE INTERIOR OF SAID CONTAINER INTO THE TIP MEMBER, AND AN ENCLOSED REFRIGERANT EXHAUST TUBE EXTENDING FROM SAID TIP MEMBER TO AN EXTERIOR OUTLET PROVIDED THEREOF IN A WALL OF SAID CONTAINER; AND A PRESSURIZING CONDUIT JOINED TO SAID CONTAINER IN FLUID COMMUNICATION WITH SAID NON-METALLIC POROUS MATERIAL FOR INTRODUCING PRESSURIZED FLUID TO VAPORIZE SAID LIQUID REFRIGERANT FOR FLOW TO SAID PROBE.
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |