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WOLFEN FILMFAB VEB

Overview
  • Total Patents
    2,265
About

WOLFEN FILMFAB VEB has a total of 2,265 patent applications. Its first patent ever was published in 1951. It filed its patents most often in German Democratic Republic, Germany and France. Its main competitors in its focus markets optics, organic fine chemistry and macromolecular chemistry and polymers are GEN ANILINE & FILM CORP, PHOTO PRODUITS GEVAERT and PHOTO PRODUITS GEVAERT S A.

Patent filings per year

Chart showing WOLFEN FILMFAB VEBs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wolf Friedrich 73
#2 Plaschnick Dieter 69
#3 Roth Christoph 68
#4 Marx Joerg 56
#5 Waag Theodor 47
#6 Wolf Dr Friedrich 46
#7 Reher Ernst-Otto 38
#8 Epperlein Joachim 37
#9 Kaermer Reinhard 36
#10 Pietsch Herward 33

Latest patents

Publication Filing date Title
DD296449A5 Method for changing shapes of thermoplastic materials
DD296448A5 Device for modifying shapes of thermoplastic materials
DD295422A5 Transparent electro-photographic recording material with electrical connection contact
DD295364A5 Process for the preparation of heterocyclic thioethers
DD295337A5 Method for producing dry ammonium salt of 2-halogen carboxyanese
DD294354A5 Light-sensitive pull-off paper
DD294344A5 Analytical element for the simultaneous determination of oligosaccarides and glucose
DE4013887A1 Measuring pressure by capacitative transducer - electrically measuring change in capacity caused by pressure between conductive diaphragm and capacitor electrode
DD292980A5 Process for increasing sensitivity in photographic silver halogenide materials
DD293210A5 One or two-componententiazotype material
DD293214A5 Method for determining the termination time for determining termination in textile pulp manufacture
DD293209A5 One or two-componententiazotype material
DD293215A5 Method for determining the period of completing termination in paper pulp manufacture
DD291169A5 Process for increasing sensitivity in photographic silver halogenide materials
DD291061A5 Device for locking transport cars and for delivering solid transport goods
DD291168A5 Method for mechanical dispersification of photographic additives
DD291173A5 Electrophotographic transparent recording material
DD291171A5 Zweikomponentendiazotypiematerial
DD291078A5 Process for the preparation of p-n, n-dialkylaminobenzoesaeures
DD291094A5 Analytical element for determining invertase