公开(公告)号：US2648009A

公开(公告)日：1953-08-04

申请号：US27556752

申请日：1952-03-08

Applicant: CONS ENG CORP

Inventor： ROBINSON CHARLES F

IPC: H01J49/38

CPC classification number: H01J49/38

公开(公告)号：US2627034A

公开(公告)日：1953-01-27

申请号：US73675847

申请日：1947-03-24

Applicant: CONS ENG CORP

Inventor： WASHBURN HAROLD W ,  BERRY CLIFFORD E

IPC: H01J49/38

CPC classification number: H01J49/38

公开(公告)号：US2570158A

公开(公告)日：1951-10-02

申请号：US19887050

申请日：1950-12-02

Applicant: GEN ELECTRIC

Inventor： SCHISSEL PAUL O

IPC: H01J49/38

CPC classification number: H01J49/38

公开(公告)号：US2535032A

公开(公告)日：1950-12-26

申请号：US4516348

申请日：1948-08-19

Applicant: BENNETT WILLARD H

Inventor： BENNETT WILLARD H

IPC: H01J41/04 ,  H01J49/36 ,  H01J49/38

CPC classification number: H01J49/36 ,  H01J41/04

公开(公告)号：US11680938B2

公开(公告)日：2023-06-20

申请号：US16446871

申请日：2019-06-20

Applicant: Saudi Arabian Oil Company

Inventor： Hendrik Muller ,  Nadrah Abdullah Alawani ,  Ibrahim E. Al-Naimi

IPC: G01N33/28 ,  G01N33/24 ,  H01J49/00 ,  H01J49/38 ,  H01J49/40

CPC classification number: G01N33/2823 ,  G01N33/241 ,  G01N33/287 ,  H01J49/004 ,  H01J49/38 ,  H01J49/40

Abstract: A method and system to determine mass fraction of aromatic hydrocarbons, sulfur-multi-sulfur, sulfur-nitrogen, multi-sulfur-multi-nitrogen, and nitrogen containing aromatic compound classes present within a petroleum sample. The invention uses total sulfur determination, total nitrogen determination, and elemental formulas determination, with the latter determined through time-of-flight mass spectrometric analysis with atmospheric pressure photo ionization and Fourier-transform ion-cyclotron resonance mass spectrometric analysis with atmospheric pressure photo ionization.

公开(公告)号：US10340132B2

公开(公告)日：2019-07-02

申请号：US15773720

申请日：2016-11-24

Applicant: DH Technologies Development Pte. Ltd.

Inventor： Takashi Baba

IPC: H01J49/38 ,  H01J49/42

Abstract: Improvements to a side-on Penning trap include a feedback system for stabilizing the magnetic field. This system includes a magnetic sensor that measures the magnetic field and a solenoid coil that in response to the magnetic field measurements increases or decreases the overall magnetic field. Improvements also include a number of different configurations of the two sets of PCB electrodes used to produce the quadrupole electric field. Dimensions of the PCB electrodes are optimized, an equipotential surface electrode is added, and additional ring electrodes are added to produce a purer quadrupole field. A central disk electrode is segmented to direct charged particles to the trap center to make the trap useful for applications other than mass spectrometry. Finally, outer ring electrodes are segmented to increase the path of charged particles, thereby increasing sensitivity.

公开(公告)号：US10297433B2

公开(公告)日：2019-05-21

申请号：US15201786

申请日：2016-07-05

Applicant: Bruker Daltonik GmbH

Inventor： Roland Jertz

IPC: G01N27/62 ,  H01J49/00 ,  H01J49/36 ,  H01J49/38

Abstract: The invention relates to reducing harmonic signals in FT-ICR spectra. Since harmonic signals in quadrupolar 2ω-detection can be more abundant for the same ion motion in the ICR cell as compared to harmonic signals in classical dipolar 1ω-detection, they could hitherto not be reduced to satisfactory levels by any known method, such as gated deflection during ion introduction into, and correcting for an offset electric field axis in the ICR cell. The present disclosure foresees, in addition to other methods carried out for improving the measurement conditions as the case may be, performing the quadrupolar 2ω-detection at least twice, where the phase of the ion excitation radio frequency is turned by 180° in the second measurement. From the sum transient, a Fourier-transformed spectrum is derived. As a result, the broad band spectra of complex substance mixtures like crude oil become cleaner, and misinterpretations of false (harmonic) peaks are minimized.

公开(公告)号：US10290485B2

公开(公告)日：2019-05-14

申请号：US15531367

申请日：2015-11-24

Applicant: DH Technologies Development PTE Ltd.

Inventor： Takashi Baba ,  Alex Berlyand

IPC: H01J49/00 ,  H01J49/06 ,  H01J49/38

Abstract: Methods and systems for analyzing ions in a magnetic ion trap are provided herein. In accordance with various aspects of the present teachings, the methods and systems described herein enable Fourier transform ion cyclotron resonance mass spectrometry across relatively narrow gap magnetic fields substantially perpendicular to the axis along which the ions are injected into the ion trap. As a result, smaller, less expensive magnets can be used to produce the high-intensity, uniform magnetic fields utilized in high performance FT-ICR/MS applications. Accordingly, the present teachings enable permanent magnets (as well as electromagnets) to generate these magnetic fields, potentially reducing the cost, size, and/or complexity of the systems described herein relative to conventional FT-ICR systems.

公开(公告)号：US20180323052A1

公开(公告)日：2018-11-08

申请号：US15773720

申请日：2016-11-24

Applicant: DH Technologies Development Pte. Ltd.

Inventor： Takashi Baba

IPC: H01J49/42 ,  H01J49/38

CPC classification number: H01J49/4255 ,  H01J49/38 ,  H01J49/424

Abstract: Improvements to a side-on Penning trap include a feedback system for stabilizing the magnetic field. This system includes a magnetic sensor that measures the magnetic field and a solenoid coil that in response to the magnetic field measurements increases or decreases the overall magnetic field. Improvements also include a number of different configurations of the two sets of PCB electrodes used to produce the quadrupole electric field. Dimensions of the PCB electrodes are optimized, an equipotential surface electrode is added, and additional ring electrodes are added to produce a purer quadrupole field. A central disk electrode is segmented to direct charged particles to the trap center to make the trap useful for applications other than mass spectrometry. Finally, outer ring electrodes are segmented to increase the path of charged particles, thereby increasing sensitivity.

公开(公告)号：US20180068842A1

公开(公告)日：2018-03-08

申请号：US15795405

申请日：2017-10-27

Applicant: Carl Zeiss SMT GmbH

Inventor： Michel Aliman ,  Alexander Laue ,  Hin Yiu Anthony Chung ,  Gennady Fedosenko ,  Ruediger Reuter ,  Leonid Gorkhover ,  Martin Antoni ,  Andreas Gorus ,  Valerie Derpmann

IPC: H01J49/38 ,  H01J49/42 ,  H01J49/00

CPC classification number: H01J49/38 ,  H01J49/0031 ,  H01J49/027 ,  H01J49/425 ,  H01J49/426 ,  H01J49/427 ,  H01J49/4295

Abstract: A method for examining a gas by mass spectrometry includes: ionizing the gas for producing ions; and storing, exciting and detecting at least some of the produced ions in an FT ion trap. Producing and storing the ions in the FT ion trap and/or exciting the ions prior to the detection of the ions in the FT ion trap includes at least one selective IFT excitation, such as a SWIFT excitation, which is dependent on the mass-to-charge ratio of the ions. The disclosure further relates to a mass spectrometer. A mass spectrometer includes: an FT ion trap; and an excitation device for storing, exciting, and detecting ions in the FT ion trap.