Sample quantitation using miniature mass spectrometer
US-2026038785-A1 · Feb 5, 2026 · US
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Ouyang Zheng patents
Ouyang Zheng is listed as an inventor on 130 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Ouyang Zheng |
| Total patents | 130 |
| First publication | Jan 13, 2015 |
| Latest publication | Feb 5, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Mass tag analysis for rare cells and cell free molecules
US-12480942-B2 · Nov 25, 2025 · US
Sample quantitation using a miniature mass spectrometer
US-12444592-B2 · Oct 14, 2025 · US
Systems and methods for determining duty costs associated with a supply chain network
US-2025292198-A1 · Sep 18, 2025 · US
Systems and methods for quantifying an analyte extracted from a sample
US-12374538-B2 · Jul 29, 2025 · US
Systems and methods for determining duty costs associated with a supply chain network
US-12361369-B2 · Jul 15, 2025 · US
Systems and methods for determining path solutions associated with a supply chain network
US-2025053902-A1 · Feb 13, 2025 · US
Systems and methods for determining path solutions associated with a supply chain network
US-12141729-B2 · Nov 12, 2024 · US
Mass spectrometry analysis of microorganisms in samples
US-2024194469-A1 · Jun 13, 2024 · US
Systems and methods for quantifying an analyte extracted from a sample
US-2024162026-A1 · May 16, 2024 · US
Recent patents
Latest publications not already listed above.
Systems and methods for determining duty costs associated with a supply chain network
US-2024086830-A1 · Mar 14, 2024 · US
Ion generation using modified wetted porous materials
US-11913924-B2 · Feb 27, 2024 · US
Enclosed desorption electrospray ionization probes and method of use thereof
US-11903707-B2 · Feb 20, 2024 · US
Systems and methods for determining path solutions associated with a supply chain network
US-2024028993-A1 · Jan 25, 2024 · US
Systems and methods for quantifying an analyte extracted from a sample
US-11875983-B2 · Jan 16, 2024 · US
Systems and methods for determining duty costs associated with a supply chain network
US-11868950-B2 · Jan 9, 2024 · US
Sample dispenser including an internal standard and methods of use thereof
US-11867684-B2 · Jan 9, 2024 · US
Mass spectrometry analysis of microorganisms in samples
US-11830716-B2 · Nov 28, 2023 · US
Ion generation using modified wetted porous materials
US-2023341360-A1 · Oct 26, 2023 · US
Systems and methods for determining path solutions associated with a supply chain network
US-11769093-B2 · Sep 26, 2023 · US
Systems and methods for quantifying an analyte extracted from a sample
US-2023230827-A1 · Jul 20, 2023 · US
Systems and methods for analyzing an analyte extracted from a sample using an adsorbent material
US-11680876-B2 · Jun 20, 2023 · US
Mass spectrometry analysis of microorganisms in samples
US-2023154737-A1 · May 18, 2023 · US
Ion generation using modified wetted porous materials
US-11635415-B2 · Apr 25, 2023 · US
Mass tag analysis for rare cells and cell free molecules
US-2023115304-A1 · Apr 13, 2023 · US
Mass tag analysis for rare cells and cell free molecules
US-11531024-B2 · Dec 20, 2022 · US
Systems and methods for quantifying an analyte extracted from a sample
US-11495448-B2 · Nov 8, 2022 · US
Systems and methods for determining path solutions associated with a supply chain network
US-2022318710-A1 · Oct 6, 2022 · US
Systems and methods for determining duty costs associated with a supply chain network
US-2022270043-A1 · Aug 25, 2022 · US
Enclosed desorption electrospray ionization probes and method of use thereof
US-2022265172-A1 · Aug 25, 2022 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Purdue Research Foundation | 119 |
| Coupa Software Inc | 10 |
| Ouyang Zheng | 4 |
| Ren Yue | 2 |
| Wang Xiao | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| H01J49/167 | 51 |
| H01J49/0404 | 48 |
| H01J49/0031 | 47 |
| H01J49/0445 | 38 |
| H01J49/0409 | 37 |