US3300849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing metal gas chromatography columns
Assignee: Gas Chromatography Ltd
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Filing: 1963-10-08
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Granted: 1967-01-31
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Expires: 1983-10-08
Abstract
No abstract record available.
Inventors
- 👤 Wiseman William Antony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:28
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/50; G01N30/56; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49812
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
A METHOD OF FILLING A PARTITION COLUMN FORMED FROM A METAL TUBE FOR GAS CHROMATOGRAPHY WITH A PACKING MATERIAL CONSISTING OF AN INERT SOLID MATERIAL AND A LIQUID PARTITION AGENT, WHICH COMPRISES THE STEPS OF PROVIDING A METAL TUBE, PLACING A GLASS MEMBER WHICH WILL BE IN ENERGY TRANSMITTING RELATIONSHIP WITH THE MATERIAL TO BE PACKED, FEEDING THE PACKING MATERIAL INTO THE TUBE, INITIATING VIBRATIONS IN THE GLASS MEMBER TO EFFECT THE PACKING OF THE PACKING MATERIAL, STOPPING THE FLOW OF THE PACKING MATERIAL, AND REMOVING THE GLASS MEMBER.
Claim 2
Independent Claim
89 words
A METHOD OF FILLING A PARTITION COLUMN FORMED FROM A METAL TUBE FOR GAS CHROMATOGRAPHY WITH A PACKING MATERIAL CONSISTING OF AN INERT SOLID MATERIAL AND A LIQUID PARTITION AGENT, WHICH COMPRISES THE STEPS OF PROVIDING A METAL TUBE, PLACING A GLASS MEMBER WHICH WILL BE IN ENERGY TRANSMITTING RELATIONSHIP WITH THE MATERIAL TO BE PACKED, FEEDING THE PACKING MATERIAL INTO THE TUBE, INITIATING VIBRATIONS IN THE GLASS MEMBER TO EFFECT THE PACKING OF THE PACKING MATERIAL, STOPPING THE FLOW OF THE PACKING MATERIAL, AND REMOVING THE GLASS MEMBER.
Claim 3
Dependent Claim
19 words
A METHOD AS CLAIMED IN CLAIM 1, WHEREIN THE GLASS MEMBER COMPRISES A GLASS SHEATH AROUND THE METAL TUBE.
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) | 1970-01-30 | 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 |