<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE ep-patent-document PUBLIC "-//EPO//EP PATENT DOCUMENT 1.4//EN" "ep-patent-document-v1-4.dtd"><ep-patent-document id="EP0273920A1" file="EP87902201NWA1.xml" lang="en" doc-number="0273920" date-publ="19880713" kind="A1" country="EP" status="n" dtd-version="ep-patent-document-v1-4"><SDOBI lang="en"><B000><eptags><B001EP>AT..CHDE....FRGB..ITLI..NLSE........................................................................</B001EP><B003EP>*</B003EP><B007EP>EPregister to ST.36 EBD process v 1.0 kbaumeister@epo.org (15 Jan 2013)</B007EP></eptags></B000><B100><B110>0273920</B110><B130>A1</B130><B140><date>19880713</date></B140><B190>EP</B190></B100><B200><B210>87902201.0</B210><B220><date>19870227</date></B220><B240><B241><date>19880405</date></B241></B240><B250>en</B250><B251EP>en</B251EP><B260>en</B260></B200><B300><B310>19860847073</B310><B320><date>19860401</date></B320><B330><ctry>US</ctry></B330></B300><B400><B405><date>19880713</date><bnum>198828</bnum></B405><B430><date>19880713</date><bnum>198828</bnum></B430></B400><B500><B510EP><classification-ipcr sequence="1"><text>G01N  27/    00            A I                    </text></classification-ipcr><classification-ipcr sequence="2"><text>G01N  27/    22            A I                    </text></classification-ipcr></B510EP><B540><B541>en</B541><B542>CAPACITIVE CHEMICAL SENSOR USING AN ION EXCHANGE SURFACE</B542><B541>fr</B541><B542>CAPTEUR CHIMIQUE CAPACITIF UTILISANT UNE SURFACE D'ECHANGE D'IONS</B542><B541>de</B541><B542>CHEMISCHER KONDENSATORFÜHLER UNTER VERWENDUNG EINER IONENAUSTAUSCHOBERFLÄCHE</B542></B540></B500><B700><B710><B711><snm>THE JOHNS HOPKINS UNIVERSITY</snm><adr><str>2024 East Monument, Suite 2-100</str><city>Baltimore, Maryland 21205</city><ctry>US</ctry></adr></B711></B710><B720><B721><snm>STANBRO, William, D.</snm><adr><str>10916 Battersea Lane</str><city>Columbia, MD 21044</city><ctry>US</ctry></adr></B721><B721><snm>NEWMAN, Arnold, L.</snm><adr><str>4128 Warner Street</str><city>Kensington, MD 20895</city><ctry>US</ctry></adr></B721></B720><B740><B741><snm>Koepsell, Helmut, Dipl.-Ing.</snm><adr><str>Mittelstrasse 7</str><city>D-50672 Köln</city><ctry>DE</ctry></adr></B741></B740></B700><B800><B840><ctry>AT</ctry><ctry>CH</ctry><ctry>DE</ctry><ctry>FR</ctry><ctry>GB</ctry><ctry>IT</ctry><ctry>LI</ctry><ctry>NL</ctry><ctry>SE</ctry></B840><B860><B861><dnum><anum>US1987000381</anum></dnum><date>19870227</date></B861><B862>en</B862></B860><B870><B871><dnum><pnum>WO1987006002</pnum></dnum><date>19871008</date><bnum>198722</bnum></B871></B870></B800></SDOBI></ep-patent-document>