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DANIEL TEFI APPARATEBAU

Overview
  • Total Patents
    244
About

DANIEL TEFI APPARATEBAU has a total of 244 patent applications. Its first patent ever was published in 1936. It filed its patents most often in France, Switzerland and Germany. Its main competitors in its focus markets audio-visual technology, machines and optics are TECH MEDIA CORP U, SONY DISC & DIGITAL SOLUTIONS and THOMSON ALCATEL GIGADISC.

Patent filings in countries

World map showing DANIEL TEFI APPARATEBAUs patent filings in countries
# Country Total Patents
#1 France 90
#2 Switzerland 69
#3 Germany 56
#4 Spain 6
#5 Greece 6
#6 United States 6
#7 Austria 4
#8 Denmark 4
#9 Canada 2
#10 Finland 1

Patent filings per year

Chart showing DANIEL TEFI APPARATEBAUs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 G Tefi-Apparatebau Dr Daniel K 37
#2 Daniel K-G Tefi-Apparatebau Dr 26
#3 Daniel Karl Dr 16
#4 Daniel Dr Karl 15
#5 Westerkamp Hugo 14
#6 Daniel K G Tefi-Apparatebau Dr 5
#7 Karl Daniel 5
#8 Scherer Hermann 3
#9 Fries Gustav 2
#10 Libert Richard 2

Latest patents

Publication Filing date Title
DE966791C Tape player for cassetted, tape-shaped sound carriers
DE1026096B Scanning or labeling of endless tape-shaped sound carriers rolled into a roll
DE955365C Additional device for playing short, belt-shaped, endless sound bands on sound tape devices
DE955459C Player or playback device for endless, tape-shaped sound carriers
DE954555C Cassette and tape player for endless, tape-shaped sound carrier rolls
DE961577C Storage container for short, endless sound bands
US2830649A Connecting the ends of sound record thermoplastic strips
DE1022815B Modulation-controlled switch-off device for sound reproduction devices
DE954295C Endless tape-shaped sound carrier rolled up into a roll
DE955363C Endless tape-shaped sound carrier rolled up into a roll
DE1020805B Cassette for endless, tape-shaped sound carriers
DE966250C Cassette for an endless sound tape
DE1053802B Method of manufacturing a piezoelectric pickup
DE1021180B tape
DE1025640B Magnetic sound device with combined magnetic head
DE1048040B Sound recording and reproducing devices for tape-shaped recording media
DE1053206B Device for recording or playing multi-line inscribable or inscribed magnetogram carrier
DE953290C Player for tape and disk-shaped sound carriers
DE938630C Process for the production of endless magnetic sound tapes which are provided with a guide groove and rolled up into a roll
DE923877C Device for connecting the ends of finite sound tapes made of a thermoformable plastic and provided with mechanically scannable sound writing