Patents
US 12768768 B2: High-efficiency optical detection of particles in micro-capillaries
- Granted
- 2026-10-20
- Filed
- 2023-01-09 application 18094482
- Type
- Utility · 23 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Disclosed herein are systems, methods, and techniques for optical detection of analytes (e.g., biomarkers or other objects) using a liquid-core waveguide in which the analytes are suspended in a high-index liquid inside a liquid channel of the waveguide. The term “high-index” may indicate a refractive core index of the carrier liquid that is higher than or equal to that of one or more surrounding cladding layer(s) (e.g., ethylene glycol liquid inside a glass channel). In some embodiments, a method includes illuminating, by a light-source, one or more particles in a liquid-core waveguide, wherein the liquid-core waveguide comprises a first cladding layer having a first index of a refraction, and a hollow core comprising a liquid inside the hollow core, wherein the liquid has a second index of refraction higher than the first index of refraction; and detecting, by a detector, light emitted from the one or more particles.
Source: PTBLXML, file of 2026-10-20 (ipgb20261020.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 | PTBLXML, file of 2026-10-20 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Holger Schmidt | Capitola, CA | 65 | PTBLXML, file of 2026-10-20 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01N | Investigating or analysing materials by determining their chemical or physical properties | G01N15/1436 | PTBLXML, file of 2026-10-20 |
| G02B | Optical elements, systems or apparatus | G02B6/032 | PTBLXML, file of 2026-10-20 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
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.