US3065185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a chromatographic packing
Assignee: MSA Research Corp
•
Filing: 1959-08-12
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Granted: 1962-11-20
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Expires: 1979-08-12
Abstract
No abstract record available.
Inventors
- 👤 Patricia L Burns
- 👤 Luft Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:57
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/90; G01N30/92; G01N30/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF MAKING A CHROMATOGRAPHIC PACKING COMPRISING PREPARING AN INTIMATE MIXTURE OF AN INERT SOLID SUN-STRATE AND A PARTITIONING LIQUID IN PROPORTIONS SUCH THAT THE MIXTURE IS SUBSTANTIALLY DRY TO THE TOUCH HOT PRESSING THE MIXTURE UNDER A PRESSURE OF AT LEAST ABOVE 1500 POUNDS PER SQUARE INCH AT A TEMPERATURE BELOW THE BOILING POINT OF THE LIQUID UNDER THE APPLIED PRESSURE, AND CRUSHING THE RESULTANT COMPACT.
Claim 2
Independent Claim
68 words
THE METHOD OF MAKING A CHROMATOGRAPHIC PACKING COMPRISING PREPARING AN INTIMATE MIXTURE OF AN INERT SOLID SUN-STRATE AND A PARTITIONING LIQUID IN PROPORTIONS SUCH THAT THE MIXTURE IS SUBSTANTIALLY DRY TO THE TOUCH HOT PRESSING THE MIXTURE UNDER A PRESSURE OF AT LEAST ABOVE 1500 POUNDS PER SQUARE INCH AT A TEMPERATURE BELOW THE BOILING POINT OF THE LIQUID UNDER THE APPLIED PRESSURE, AND CRUSHING THE RESULTANT COMPACT.
References Cited (Backward Citations)
US2875606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |