Aqueous dispersion of (meth)acrylic polymer and polysilsesquioxane nano particles
US-2022049024-A1 · Feb 17, 2022 · US
Mass spectrometry device and mass spectrometry method
US2021305034A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021305034-A1 |
| Application number | US-201817057964-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 29, 2018 |
| Priority date | May 29, 2018 |
| Publication date | Sep 30, 2021 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A precursor ion selection processing unit ( 22 ) sequentially selects precursor ions having different mass-to-charge ratios, and causes an MS/MS spectrum data acquisition processing unit ( 23 ) to acquire MS/MS spectrum data corresponding to each precursor ion. The precursor ion selection processing unit ( 22 ) sequentially selects the precursor ion having a mass-to-charge ratio which is not included in a predetermined range with respect to a mass-to-charge ratio of the precursor ion for which the MS/MS spectrum data has already been acquired.
First claim
Opening claim text (preview).
1 . A mass spectrometry device comprising: an MS spectrum data acquisition processing unit that acquires MS spectrum data by ionizing a sample and performing mass spectrometry; a precursor ion selection processing unit that selects a precursor ion on the basis of the MS spectrum data; and an MS/MS spectrum data acquisition processing unit that acquires MS/MS spectrum data by cleaving the selected precursor ion and performing mass spectrometry, wherein the precursor ion selection processing unit sequentially selects precursor ions having different mass-to-charge ratios, causes the MS/MS spectrum data acquisition processing unit to acquire MS/MS spectrum data corresponding to each of the precursor ions, and sequentially selects the precursor ion having a mass-to-charge ratio which is not included in a predetermined range with respect to a mass-to-charge ratio of the precursor ion for which the MS/MS spectrum data has already been acquired. 2 . The mass spectrometry device according to claim 1 , further comprising: a display processing unit that displays the MS/MS spectrum data acquired by the MS/MS spectrum data acquisition processing unit, wherein the display processing unit displays, as the MS/MS spectrum data corresponding to an ion which is not selected as the precursor ion by the precursor ion selection processing unit, the MS/MS spectrum data corresponding to the precursor ion including the mass-to-charge ratio of the ion within the predetermined range. 3 . The mass spectrometry device according to claim 2 , wherein when the MS/MS spectrum data corresponding to the ion which is not selected as the precursor ion by the precursor ion selection processing unit is displayed, the display processing unit displays a retention time in a case of assuming that the ion is selected as the precursor ion and the MS/MS spectrum data is acquired. 4 . A mass spectrometry method comprising: an MS spectrum data acquisition step of acquiring MS spectrum data by ionizing a sample and performing mass spectrometry; a precursor ion selection step of selecting a precursor ion on the basis of the MS spectrum data; and an MS/MS spectrum data acquisition step of acquiring MS/MS spectrum data by cleaving the selected precursor ion and performing mass spectrometry, wherein the precursor ion selection step sequentially selects precursor ions having different mass-to-charge ratios, causes the MS/MS spectrum data acquisition step to acquire MS/MS spectrum data corresponding to each of the precursor ions, and sequentially selects the precursor ion having a mass-to-charge ratio which is not included in a predetermined range with respect to a mass-to-charge ratio of the precursor ion for which the MS/MS spectrum data has already been acquired. 5 . The mass spectrometry method according to claim 4 , further comprising: a display step of displaying the MS/MS spectrum data acquired by the MS/MS spectrum data acquisition step, wherein the display step displays, as the MS/MS spectrum data corresponding to an ion which is not selected as the precursor ion by the precursor ion selection step, the MS/MS spectrum data corresponding to the precursor ion including the mass-to-charge ratio of the ion within the predetermined range. 6 . The mass spectrometry method according to claim 5 , wherein when the MS/MS spectrum data corresponding to the ion which is not selected as the precursor ion by the precursor ion selection step is displayed, in the display step, a retention time in a case of assuming that the ion is selected as the precursor ion and the MS/MS spectrum data is acquired is displayed.
Assignees
Inventors
Classifications
by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode · CPC title
- H01J49/0045Primary
characterised by the fragmentation or other specific reaction · CPC title
Methods for using particle spectrometers · CPC title
Details · CPC title
- H01J49/0031Primary
Step by step routines describing the use of the apparatus (H01J49/0081 takes precedence) · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2021305034A1 cover?
- A precursor ion selection processing unit ( 22 ) sequentially selects precursor ions having different mass-to-charge ratios, and causes an MS/MS spectrum data acquisition processing unit ( 23 ) to acquire MS/MS spectrum data corresponding to each precursor ion. The precursor ion selection processing unit ( 22 ) sequentially selects the precursor ion having a mass-to-charge ratio which is not in…
- Who is the assignee on this patent?
- Shimadzu Corp
- What technology area does this patent fall under?
- Primary CPC classification H01J49/0045. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Sep 30 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).