US3780866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the separation of substance mixtures by chromatography and a column means adapted to be used for the method
Assignee: Cytiva Sweden AB
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Filing: 1971-11-16
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Granted: 1973-12-25
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Expires: 1991-11-16
Abstract
Abstract The present invention is concerned with a method for the separation of substance mixtures by chromatography. More particularly, the invention pertains to an improvement in a method for the separation of substance mixtures by chromatography while using a separating medium bed, a solution of the mixture to be separated being charged into the bed and an eluting agent being supplied to the bed in order to force liquid therethrough to recover at least two fractions of the substance mixture and the bed being maintained divided into at least two separate portions.
Inventors
- 👤 T Tibbling
- 👤 L Ek
- 👤 P Wallin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:10
CPC Classifications
B; B01; B01J; B01J39/00; B01J39/26; B01D; B01D15/00; B01D15/08; B01D15/10; B01D15/18; B01D15/1864; B01D15/1871; G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/46; G01N30/461; G01N30/60; G01N30/6004; G01N30/6047
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
183 words
Fluid chromatography apparatus comprising a. a plurality of separate chromatograph column sections in serial communication with each other so that fluid is able to pass serially therethrough, b. each column section comprising: 1. a cover element, 2. a bottom element, 3. an intermediate side wall portion adapted to extend between said cover element and said bottom element, said cover element and said bottom element A. each being round in configuration, B. each having a plurality of openings disposed outwardly from the center thereof, c. a separate set of conduits associated with each cover element and each bottom element, one end of each conduit in each set being connected to one of said plurality of openings, and d. the other end of each conduit in a given set being connected to a common tubular passageway, each common tubular passageway that is connected to a set of conduits that is connected to a bottom element serving as a collector means, and each common tubular passageway that is connected to a set of conduits that is connected to a cover element serving as a spreading means.
Claim 2
Dependent Claim
183 words
Fluid chromatography apparatus comprising a. a plurality of separate chromatograph column sections in serial communication with each other so that fluid is able to pass serially therethrough, b. each column section comprising: 1. a cover element, 2. a bottom element, 3. an intermediate side wall portion adapted to extend between said cover element and said bottom element, said cover element and said bottom element A. each being round in configuration, B. each having a plurality of openings disposed outwardly from the center thereof, c. a separate set of conduits associated with each cover element and each bottom element, one end of each conduit in each set being connected to one of said plurality of openings, and d. the other end of each conduit in a given set being connected to a common tubular passageway, each common tubular passageway that is connected to a set of conduits that is connected to a bottom element serving as a collector means, and each common tubular passageway that is connected to a set of conduits that is connected to a cover element serving as a spreading means.
Claim 3
Dependent Claim
3 words
a bottom element,
Claim 4
Dependent Claim
3 words
a bottom element,
Claim 5
Dependent Claim
142 words
an intermediate side wall portion adapted to extend between said cover element and said bottom element, said cover element and said bottom element A. each being round in configuration, B. each having a plurality of openings disposed outwardly from the center thereof, c. a separate set of conduits associated with each cover element and each bottom element, one end of each conduit in each set being connected to one of said plurality of openings, and d. the other end of each conduit in a given set being connected to a common tubular passageway, each common tubular passageway that is connected to a set of conduits that is connected to a bottom element serving as a collector means, and each common tubular passageway that is connected to a set of conduits that is connected to a cover element serving as a spreading means.
Claim 6
Dependent Claim
142 words
an intermediate side wall portion adapted to extend between said cover element and said bottom element, said cover element and said bottom element A. each being round in configuration, B. each having a plurality of openings disposed outwardly from the center thereof, c. a separate set of conduits associated with each cover element and each bottom element, one end of each conduit in each set being connected to one of said plurality of openings, and d. the other end of each conduit in a given set being connected to a common tubular passageway, each common tubular passageway that is connected to a set of conduits that is connected to a bottom element serving as a collector means, and each common tubular passageway that is connected to a set of conduits that is connected to a cover element serving as a spreading means.
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |