C09B3/20 - CPC Classification Index

ClassID:

101842 ⎘

C09B3/20 - CPC Classification

Classification description:

Dyes with an anthracene nucleus condensed with one or more carbocyclic rings; Perylene derivatives; Preparation from starting materials already containing the perylene nucleus by halogenation

Recent Application in this class:

20190194535

2019-06-27

Optical element for correcting color blindness

20170088771

2017-03-30

Optical element for correcting color blindness

20150225418

2015-08-13

Conveniently prepared naphthalene and perylene derivatives as building blocks for organic electronic materials and dyestuff

20140336303

2014-11-13

Optical element for correcting color blindness

20130100048

2013-04-25

Optical element for correcting color blindness

20130088684

2013-04-11

Optical element for correcting color blindness

20130062564

2013-03-14

Optical element for correcting color blindness

20130057824

2013-03-07

Optical element for correcting color blindness

20130056682

2013-03-07

Optical element for correcting color blindness

#10

20130033776

2013-02-07

Optical Element for Correcting Color Blindness

#11

20130032758

2013-02-07

Optical element for correcting color blindness

#12

20110293899

2011-12-01

Polymer-bonded perylene dyes and compositions containing same