US4775836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow-through cell for NMR spectroscopy of liquid samples
Assignee: Siemens Medical Solutions USA Inc
•
Filing: 1987-03-27
•
Granted: 1988-10-04
•
Expires: 2007-03-27
Abstract
Abstract A flow-through cell for subjecting a liquid sample to NMR spectroscopy retains the sample in a substantially spherical volume which, in use, is located inside the RF coil. Because the volume is spherical, artifacts caused by inhomogeneity in magnetic susceptibility are reduced.
Inventors
- 👤 Piotr Starewicz
- 👤 Michael Albright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:31
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/30; G01R33/307
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
50 words
A flow-through cell for subjecting a liquid sample to NMR spectroscopy, comprising: a cylindrical glass jacket; and a liner located within said jacket and having an interior recess shaped to bound a substantially spherical volume and an axially extending flow channel which communicates with said volume across a diameter thereof.
Claim 2
Dependent Claim
50 words
A flow-through cell for subjecting a liquid sample to NMR spectroscopy, comprising: a cylindrical glass jacket; and a liner located within said jacket and having an interior recess shaped to bound a substantially spherical volume and an axially extending flow channel which communicates with said volume across a diameter thereof.
Claim 3
Dependent Claim
26 words
The cell of claim 1, wherein said liner is of a doped plastic having a magnetic susceptibility which approximately matches the magnetic susceptibility of blood plasma.
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) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |