公开(公告)号：US3293491A

公开(公告)日：1966-12-20

申请号：US17296262

申请日：1962-02-13

Applicant: ROBERT A CORNOG

Inventor： HANSEN LORIN K

IPC: H01J27/18 ,  H01J41/06 ,  H01J41/20

CPC classification number: H01J41/06 ,  H01J27/18 ,  H01J41/20

公开(公告)号：US3267313A

公开(公告)日：1966-08-16

申请号：US14990661

申请日：1961-11-03

Applicant: GCA CORP

Inventor： KREISMAN WALLACE S

IPC: H01J41/06

CPC classification number: H01J41/06

公开(公告)号：US3143678A

公开(公告)日：1964-08-04

申请号：US15707661

申请日：1961-12-05

Applicant: HUGHES AIRCRAFT CO

Inventor： GILES CHARLES L

IPC: H01J41/06

CPC classification number: H01J41/06

公开(公告)号：US3028071A

公开(公告)日：1962-04-03

申请号：US79767359

申请日：1959-03-06

Applicant: VARIAN ASSOCIATES

Inventor： JEPSEN ROBERT L

IPC: H01J41/06 ,  H01J41/20

CPC classification number: H01J41/20 ,  H01J41/06

公开(公告)号：US2958803A

公开(公告)日：1960-11-01

申请号：US68289157

申请日：1957-09-09

Applicant: BELL TELEPHONE LABOR INC

Inventor： ROSE DAVID J

IPC: H01J41/06

CPC classification number: H01J41/06

公开(公告)号：US2956224A

公开(公告)日：1960-10-11

申请号：US72658958

申请日：1958-04-04

Applicant: OSKAR HEIL

Inventor： OSKAR HEIL

IPC: G01N27/66 ,  H01J41/06

CPC classification number: H01J41/06 ,  G01N27/66

公开(公告)号：US2941099A

公开(公告)日：1960-06-14

申请号：US77452058

申请日：1958-11-17

Applicant: CENTRAL SCIENTIFIC CO

Inventor： PICARD ROBERT G ,  LE BLANC JOSEPH A

IPC: H01J41/06

CPC classification number: H01J41/06

公开(公告)号：US2899605A

公开(公告)日：1959-08-11

申请号：US2899605D

IPC: G01L21/00 ,  H01J41/06

CPC classification number: H01J41/06 ,  G01L21/00

公开(公告)号：US12203887B2

公开(公告)日：2025-01-21

申请号：US18286627

申请日：2023-04-21

Applicant: NAIL ALLIANCE, LLC ,  COSMEX CO., LTD

Inventor： Shawn M. Briglin ,  Michael F. Vollero ,  John Gordon Wiley

IPC: G01N27/66 ,  G01N33/00 ,  H01J41/06

Abstract: A photoionization sensor assembly includes a housing defining a chamber with a first end and an opposing second end and being permeable to the analyte gas and non-analyte gases. A radiation source is structured to emit photons into the chamber. A first, second and third electrode are positioned in the chamber. The photons ionize the analyte gas, are insufficient to ionize the non-analyte gases, and causing ejection of photoelectrons from the third electrode. A controller is structured to receive a measurement of a total pressure and electrically bias the electrodes to collect the photoelectrons on the first and second electrodes in a ratio dependent on the total pressure. The controller is structured to determine the ratio of photoelectrons that are collected on the first and second electrodes at the total pressure and determine an amount of electrical current due to ionization by correcting the measured current using the determined ratio.

公开(公告)号：US12106950B2

公开(公告)日：2024-10-01

申请号：US17905441

申请日：2021-02-23

Applicant: Edwards Vacuum LLC

Inventor： Marcus Hans Robert Thierley

IPC: H01J41/20 ,  H01J41/06

CPC classification number: H01J41/20 ,  H01J41/06

Abstract: Method for the regeneration of a volume getter pump in a vacuum apparatus with a volume getter pump and an ion getter pump where the operating voltage of the ion getter pump is reduced, the current through the ion getter pump is recorded for determination of the pressure in the vacuum apparatus and then a heating element of the NEG is controlled as a function of the current of the ion getter pump for the purpose of heating the NEG material.