公开(公告)号：US3609434A

公开(公告)日：1971-09-28

申请号：US3609434D

申请日：1967-07-19

Applicant: NUCLEAR CHICAGO CORP

Inventor： BERRY DANIEL S

IPC: G01N30/64 ,  H01J5/20 ,  H01J47/06 ,  H01J39/26 ,  H01J39/28

CPC classification number: H01J5/20 ,  G01N30/64 ,  H01J47/06 ,  H01J2893/0037

Abstract: A boron nitride core is coated with polytetrafluorethylene (Teflon) or a similar fluorocarbon resin to form a composite gassealant insulator for use at temperatures up to about 370* C., highly resistant to mechanical deformation or chemical attack. A flow proportional counter incorporating the insulator construction is employed as a detector in gas chromatography.

公开(公告)号：US3461291A

公开(公告)日：1969-08-12

申请号：US3461291D

申请日：1967-06-22

Applicant: SCHLUMBERGER TECHNOLOGY CORP

Inventor： GOODMAN CLARK

IPC: G01V5/10 ,  G01T1/18 ,  E21B47/00 ,  H01J39/26

CPC classification number: G01V5/102 ,  G01V5/105 ,  G01V5/108

公开(公告)号：US3439168A

公开(公告)日：1969-04-15

申请号：US3439168D

申请日：1964-08-10

Applicant: AMERICAN ENKA CORP

Inventor： LINDSLEY CHARLES H

IPC: G21H5/02 ,  H01J39/26

CPC classification number: G21H5/02

公开(公告)号：US3426232A

公开(公告)日：1969-02-04

申请号：US3426232D

申请日：1965-03-19

Applicant: NUCLEAR CHICAGO CORP

Inventor： MOLITOR ROBERT L

IPC: G01N30/64 ,  H01J47/06 ,  H01J39/26 ,  H01J1/88

CPC classification number: G01N30/64 ,  H01J47/06