Patents
US 7994783 B2: Integrated microchip incorporating atomic magnetometer and microfluidic channel for NMR and MRI
- Granted
- 2011-08-09
- Filed
- 2009-02-06 application 12367292
- Type
- Utility · 6 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An integral microfluidic device includes an alkali vapor cell and microfluidic channel, which can be used to detect magnetism for nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI). Small magnetic fields in the vicinity of the vapor cell can be measured by optically polarizing and probing the spin precession in the small magnetic field. This can then be used to detect the magnetic field of in encoded analyte in the adjacent microfluidic channel. The magnetism in the microfluidic channel can be modulated by applying an appropriate series of radio or audio frequency pulses upstream from the microfluidic chip (the remote detection modality) to yield a sensitive means of detecting NMR and MRI.
Source: PVGPATDIS, file of 2026-04-10 (ipg110809.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| THE REGENTS OF THE UNIVERSITY OF CALIFORNIA 8,781 patents | US company or organization | Oakland, CA | REGENTS OF THE UNIVERSITY OF CALIFORNIA State business registration FUZZY medium confidence: same name (legal endings aside) and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Micah Ledbetter | Oakland, CA | 37 | PVGPATDIS, file of 2026-04-10 | |
| Igor M. Savukov | Los Alamos, NM | 4 | PVGPATDIS, file of 2026-04-10 | |
| Dmitry Budker | Corona, CA | 10 | PVGPATDIS, file of 2026-04-10 | |
| Vishal K. Shah | Plainsboro, NJ | 1 | PVGPATDIS, file of 2026-04-10 | |
| Svenja Knappe | Boulder, CO | 9 | PVGPATDIS, file of 2026-04-10 | |
| John Kitching | Boulder, CO | 3 | PVGPATDIS, file of 2026-04-10 | |
| David J. Michalak | Berkeley, CA | 62 | PVGPATDIS, file of 2026-04-10 | |
| Shoujun Xu | Houston, TX | 11 | PVGPATDIS, file of 2026-04-10 | |
| Alexander Pines | Berkeley, CA | 12 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01R | Measuring electric variables; measuring magnetic variables | G01R33/26 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2009-10-01 | Assignment Assignment of assignor's interest | KITCHING, JOHN NMN, MR. signed 2009-09-18 | GOVERNMNET OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE, THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY GAITHERSBURG, MD | 23315/196 | ECORSEXC, file of 2026-09-25 |
| 2009-04-21 | Assignment Assignment of assignor's interest | BUDKER, DMITRY signed 2009-02-12 LEDBETTER, MICAH P. signed 2009-02-12 XU, SHOUJUN signed 2009-02-13 PINES, ALEXANDER signed 2009-04-10 MICHALAK, DAVID J. signed 2009-04-17 SAVUKOV, IGOR M. signed 2009-04-20 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA OAKLAND, CA | 22573/417 | ECORSEXC, file of 2026-09-25 |
| 2009-03-10 | Government interest Confirmatory license | REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE signed 2009-02-13 | ENERGY, UNITED STATES DEPARTMENT OF WASHINGTON, DC | 22375/655 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.