US4116836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatographic column
Assignee: Individual
•
Filing: 1977-03-01
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Granted: 1978-09-26
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Expires: 1997-03-01
Abstract
Abstract A monolithic glass construction having a continuous passageway formed therethrough packed with chromatographic packing material is used as a chromatographic column. The monolithic construction enables the column to be formed of the longest practical length and smallest practical diameter to increase the efficiency of the column, while also providing a durable column. Quick-connect and disconnect couplings to a gas feed and analysis device are mounted on the monolithic construction.
Inventors
- 👤 William M. DeAngelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:22
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/025; G; G01; G01N; G01N30/00; G01N30/02; G01N30/60; G01N30/6052; G01N30/88; G01N2030/8881; G01N35/00; G01N2035/00178; G01N2035/00326; G01N30/6047
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
93 words
A packed chromatographic column comprising a glass monolithic construction having at least one pair of opposed surfaces and solid glass therebetween; A continuous passageway of essentially constant diameter adapted to receive a fluid therethrough contained wholly within said solid glass between said opposed surfaces of said monolithic contruction, the passageway having an inlet and an outlet opening in at least one of said opposed surfaces, and chromatographic packing material in said passageway for separating the components of a fluid sample introduced into and flowing through said passageway from said inlet to said outlet.
Claim 2
Dependent Claim
93 words
A packed chromatographic column comprising a glass monolithic construction having at least one pair of opposed surfaces and solid glass therebetween; A continuous passageway of essentially constant diameter adapted to receive a fluid therethrough contained wholly within said solid glass between said opposed surfaces of said monolithic contruction, the passageway having an inlet and an outlet opening in at least one of said opposed surfaces, and chromatographic packing material in said passageway for separating the components of a fluid sample introduced into and flowing through said passageway from said inlet to said outlet.
Claim 3
Dependent Claim
36 words
The packed chromatographic column of claim 1 wherein said inlet to said continuous passageway is in one of said opposed surfaces and the outlet of said continuous passageway is in the other of said opposed surfaces.
Claim 4
Dependent Claim
27 words
The packed chromatographic column of claim 2 wherein said glass monolithic construction is the side wall of a cylindrical tube, said side wall containing said continuous passageway.
Claim 5
Dependent Claim
23 words
The packed chromatographic column of claim 3 wherein said continuous passageway is in the form of a helix wound in said side wall.
Claim 6
Dependent Claim
47 words
The packed chromatographic column of claim 4 wherein said opposed surfaces include a top and bottom edge of said cylinder, and said helical passageway has an inlet in one of said edges of said cylinder and an outlet in the other of said edges of said cylinder.
Claim 7
Dependent Claim
33 words
The packed chromatographic column of claim 5 including means mounted on said top and bottom edges of said cylinder for coupling said inlet and outlet of said helical passageway to an analysis device.
Claim 8
Dependent Claim
71 words
The packed chromatographic column of claim 6 wherein said coupling means includes an annular flange positioned on the top and bottom edge of said cylinder over said inlet and outlet, a first cylindrical coupling member fixed to each of said flanges over said inlet and outlet, and a second coupling member removable connectable to each of said first coupling members having a passageway therethrough in communication with said inlet and outlet.
Claim 9
Dependent Claim
42 words
The packed chromatographic column of claim 7 wherein said first coupling member includes a bayonet-type slot, and said second coupling member includes at least one pin extending from a side wall thereof received within said bayonet-type slot on said first coupling member.
Claim 10
Dependent Claim
27 words
The packed chromatographic column of claim 8 wherein said second coupling member includes means for locking said pin and second coupling member to said first coupling member.
Claim 11
Dependent Claim
32 words
The packed chromatographic column claim 9 wherein said locking means includes spring means in said second coupling member for retaining said pin within said bayonet type slot on said first coupling member.
Claim 12
Dependent Claim
19 words
The packed chromatographic column of claim 1 wherein said glass monolithic construction includes at least one substantially planar plate.
Claim 13
Dependent Claim
36 words
The packed chromatographic column of claim 11 including a plurality of stacked planar plates fused together, each having a continuous passageway therethrough contained wholly within each plate in communication with a passageway of an adjacent plate.
Claim 14
Dependent Claim
15 words
The packed chromatographic column of claim 11 wherein said continuous passageway is sinsoidal in shape.
Claim 15
Dependent Claim
35 words
The packed chromatographic column of claim 12 wherein said continuous passageway has an inlet in one of said opposed surfaces and an outlet in the other of said opposed surfaces of each of said plates.
Claim 16
Dependent Claim
23 words
The packed chromatographic column of claim 1 wherein said inlet and outlet of said continuous passageway is in one of said apposed surfaces.
Claim 17
Dependent Claim
27 words
The packed chromatographic column of claim 15 wherein said glass monolithic construction is the side wall of a cylindrical tube, said side wall containing said continuous passageway.
Claim 18
Dependent Claim
37 words
The packed chromatographic column of claim 16 wherein said opposed surfaces include a top and bottom edge of said cylinder and said continuous passageway has an inlet and outlet in one of said edges of said cylinder.
Claim 19
Dependent Claim
31 words
The packed chromatographic column of claim 17 including means mounted on said one edge of said cylinder for coupling said inlet and outlet of said helical passageway to an analysis device.
Claim 20
Dependent Claim
69 words
The packed chromatographic column of claim 18 wherein said coupling means includes an annular flange positioned on said one edge of said cylinder over said inlet and outlet, a first cylindrical coupling member fixed to each of said flanges over said inlet and outlet, and a second coupling member removable connectable to each of said first coupling members having a passageway therethrough a communication with said inlet and outlet.
Claim 21
Dependent Claim
42 words
The packed chromatographic column of claim 19 wherein said first coupling member inclues a bayonet-type slot, and said second coupling member includes at least one pin extending from a side wall thereof received within said bayonet-type slot on said first coupling member.
Claim 22
Dependent Claim
27 words
The packed chromatographic column of claim 20 wherein said second coupling member includes means for locking said pin and second coupling member to said first coupling member.
Claim 23
Dependent Claim
33 words
The packed chromatographic column of claim 21 wherein said locking means includes spring means in said second coupling member for retaining said pin within said bayonet type slot on said first coupling member.
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) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |