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COULTER INFORMATION SYSTEMS

Overview
  • Total Patents
    234
About

COULTER INFORMATION SYSTEMS has a total of 234 patent applications. Its first patent ever was published in 1973. It filed its patents most often in Germany, United States and Italy. Its main competitors in its focus markets optics, electrical machinery and energy and surface technology and coating are VON GRABE BERNT FRIED WALTHER, COULTER SYSTEMS CORP and LEKSMARK INTERNESHNL INK.

Patent filings per year

Chart showing COULTER INFORMATION SYSTEMSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kuehnle Manfred Rudolf 31
#2 Kuehnle Manfred R 30
#3 Kuehnle M R 16
#4 Kuehnle M 8
#5 Talmage Peter Guy 5
#6 Manfuretsudo Rudorufu Kueenru 5
#7 Brouwer W 3
#8 Weber Harold James 3
#9 Weber Harold J 3
#10 Ignasiak Stanley F 3

Latest patents

Publication Filing date Title
US4170475A High speed electrophotographic method
US4173407A Electrophotographic contact duplicating apparatus and method
DE2728882A1 PROCEDURE OR DEVICE FOR GENERATING AN IMAGE DEVELOPED WITH TONER AS A POSITIVE-NEGATIVE INVERSION OF A LATENT CHARGE IMAGE
DE2722818A1 Photoconducting slice for electrophotography - is deposit on substrate which can be charged to retain latent image for development
JPS53143189A Photoconductive coating
ES453236A1 Apparatus to produce images in a photoconductor film element. (Machine-translation by Google Translate, not legally binding)
US4099877A Lens testing method and apparatus
US4049963A Photoelectric measuring device
US4025339A Electrophotographic film, method of making the same and photoconductive coating used therewith
DE2603866A1 Large scale screen image display appts. - has electrophotographic film member mounted in window formed in disc
FR2339879A1 Appts measuring size of particle - divides one of mass or particle number into predetermined fractions
JPS5295231A Method of and apparatus for magnifying image
NL7600995A Appts measuring size of particle - divides one of mass or particle number into predetermined fractions
AU1042576A Preparation of lithographic printing plate
GB1494182A Apparatus for large scale screen display of images
US4014779A Sputtering apparatus
US3986085A Corona power supply circuit
GB1485579A Method of and apparatus for toning electrophotographic film
US4028596A Corona power supply circuit
US4026787A Thin film deposition apparatus using segmented target means