Dalian
China
5
2023-06-15
The entities that hold a legal rights for patent applications filed by inventor Ma Wei:
Wei Ma from Dalian, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
Chromogenic double inverse opals photonic crystal resin film using water as ink and the preparation thereof
#2 | 2022-04-14TEST PAPER KIT FOR RAPID GRADED QUANTITATIVE DETECTION OF AROMATIC PRIMARY AMINE CONTENT IN ACIDIC SOLUTION AND APPLICATION THEREOF
#3 | 2018-11-29Method of preparation and application of ion-keeper adsorbent
#4 | 2015-03-05Carboxylic acid type water-soluble sulfur dye
#5 | 2013-10-31Polycarboxylic acid dye with low polymerization degree
510028 ⎘