CH305265A - Procédé de préparation d'un nouveau dérivé d'ammonium quaternaire. - Google Patents

Procédé de préparation d'un nouveau dérivé d'ammonium quaternaire.

Info

Publication number
CH305265A
CH305265A CH305265DA CH305265A CH 305265 A CH305265 A CH 305265A CH 305265D A CH305265D A CH 305265DA CH 305265 A CH305265 A CH 305265A
Authority
CH
Switzerland
Prior art keywords
quaternary ammonium
preparing
ammonium derivative
novel quaternary
bis
Prior art date
Application number
Other languages
English (en)
French (fr)
Inventor
Limited May Baker
Original Assignee
May & Baker Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by May & Baker Ltd filed Critical May & Baker Ltd
Publication of CH305265A publication Critical patent/CH305265A/fr

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/16Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
    • H01J23/24Slow-wave structures, e.g. delay systems
    • H01J23/26Helical slow-wave structures; Adjustment therefor

Landscapes

  • Microwave Tubes (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CH305265D 1952-01-01 1952-12-19 Procédé de préparation d'un nouveau dérivé d'ammonium quaternaire. CH305265A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34/52A GB764681A (en) 1952-01-01 1952-01-01 Improvements in travelling wave tubes

Publications (1)

Publication Number Publication Date
CH305265A true CH305265A (fr) 1955-02-15

Family

ID=32302972

Family Applications (2)

Application Number Title Priority Date Filing Date
CH305265D CH305265A (fr) 1952-01-01 1952-12-19 Procédé de préparation d'un nouveau dérivé d'ammonium quaternaire.
CH310060D CH310060A (de) 1952-01-01 1952-12-30 Wanderwellenröhre mit einer leitenden Schraube.

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH310060D CH310060A (de) 1952-01-01 1952-12-30 Wanderwellenröhre mit einer leitenden Schraube.

Country Status (6)

Country Link
US (1) US2757310A (de)
CH (2) CH305265A (de)
DE (1) DE933352C (de)
FR (1) FR1078434A (de)
GB (1) GB764681A (de)
NL (1) NL174893B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB767190A (en) * 1953-11-17 1957-01-30 Mullard Radio Valve Co Ltd Improvements in or relating to travelling wave tubes
NL203186A (de) * 1954-12-31
NL103284C (de) * 1955-08-12
US2853644A (en) * 1956-07-30 1958-09-23 California Inst Res Found Traveling-wave tube
US3121819A (en) * 1959-12-30 1964-02-18 Itt Arrangement for reducing high voltage breakdown between helical windings in traveling wave tubes
US3209198A (en) * 1961-06-28 1965-09-28 Sylvania Electric Prod Resilient helix mount for traveling wave tube
US4041438A (en) * 1976-02-17 1977-08-09 Odette Landeroin Duvernois Electric heating device
FR2422265A2 (fr) * 1976-09-21 1979-11-02 Thomson Csf Ligne a retard hyperfrequence et tube a propagation d'ondes comportant une telle ligne

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2110911A (en) * 1933-07-31 1938-03-15 Telefunken Gmbh Electron tube
US2064469A (en) * 1933-10-23 1936-12-15 Rca Corp Device for and method of controlling high frequency currents
NL62817C (de) * 1940-05-04
US2351055A (en) * 1941-11-21 1944-06-13 Henry S Blum Tube for producing multiple wave lengths
GB623537A (en) * 1944-06-08 1949-05-19 Rudolf Kompfner Improvements in or relating to electron discharge devices
US2489082A (en) * 1944-07-01 1949-11-22 Forest Lee De High-voltage generator
US2452572A (en) * 1944-10-20 1948-11-02 John L Jago Delay line
US2672572A (en) * 1947-07-18 1954-03-16 Philco Corp Traveling wave tube
FR984595A (fr) * 1949-02-14 1951-07-09 Csf Tube à propagation d'onde comportant une ligne à retard en forme d'hélice enrobée de verre ou quartz
FR993156A (fr) * 1949-06-08 1951-10-29 Thomson Houston Comp Francaise Structure assurant une réduction de la vitesse de propagation d'une onde électromagnétique

Also Published As

Publication number Publication date
FR1078434A (fr) 1954-11-18
NL84206C (de) 1957-02-15
GB764681A (en) 1957-01-02
CH310060A (de) 1955-09-30
DE933352C (de) 1955-09-22
NL174893B (nl) 1956-09-15
US2757310A (en) 1956-07-31

Similar Documents

Publication Publication Date Title
BE897737A (fr) Procede de resolution d'isomeres optiques, les isomeres ainsi produits et leur application pharmacologique
CH305265A (fr) Procédé de préparation d'un nouveau dérivé d'ammonium quaternaire.
DE2902466A1 (de) Optisch aktiver substituierter benzylalkohol und dessen herstellungsverfahren
DE2501957A1 (de) Verfahren zur herstellung von optisch aktivem p-hydroxyphenylglycin
EP0612716B1 (de) Verfahren zur Herstellung von einem optisch reinen Aminoalkohol
US4279821A (en) Process for preparing 3-azabicyclo(3.1.0)hexane-2-carboxylic acid
US4288601A (en) Fluorination process
EP0017543A1 (de) Benzothiazolderivate, Verfahren zu ihrer Herstellung und ihre therapeutischen Anwendungen
US4238423A (en) Process for preparing cyclo-1,3,2-oxazaphosphoryl derivatives
US2305466A (en) Process for preparation of alpha-hydroxy-beta, beta-dimethyl-gamma-hydroxy butyric acid or gamma-lactone
US3072636A (en) Process for the manufacture of ethyleneimine derivatives
DE2556040A1 (de) Antipodentrennverfahren und verbindungen
EP0023454B1 (de) Verfahren zur Herstellung von 6,6-Dimethyl-4-hydroxy-3-oxabicyclo(3.1.0)-2-hexanon und seiner Äther jeglicher stereoisomerer Form
FR2653999A1 (fr) Nouveaux derives de la morpholine, leur procede de preparation et les compositions pharmaceutiques les renfermant.
SE8205563D0 (sv) Process for the preparation of vincaminic acid esters
Roques et al. Structure de l'itanoxone
Gibson et al. XVI.—The stereochemistry of reduced quinoxalines. Part III. The resolution of externally compensated α-and β-2: 3: 7-trimethyl-l: 2: 3: 4-tetrahydroquinoxalines
DE928527C (de) Verfahren zur Herstellung von Piperidylketonen
CH633782A5 (en) Derivatives of thiazolidine- and thiazanecarboxylic acids
DE1152697B (de) Verfahren zur Herstellung des Tropinesters der 1-Phenylcyclohexan-1-carbonsaeure undseiner Salze
US1915174A (en) Process for the separation of the optically active isomers of lobelia alkaloids, their derivatives, and allied compounds
Rabjohn et al. Some 3, 4, 5-Trialkoxybenzoic Acids and Esters
DE1768466A1 (de) Neue ss-Phenylalanin-Derivate
FR2500444A1 (fr) Nouveaux derives de l'acide 5-methyl 3-formyl pentanoique, leur procede de preparation et leur application a la preparation de derives cyclopropaniques
JPS6133164A (ja) プロピオン酸誘導体の光学分割方法