US 12,214,617 B2
Biodegradable marker pen
Chi-Ting Hsieh, New Taipei (TW); Jung-Shan Huang, New Taipei (TW); Shun-Chih Fang, New Taipei (TW); Chao-Han Huang, New Taipei (TW); and Siu-Hei Choi, New Taipei (TW)
Assigned to Sunny Pro Co., Ltd., New Taipei (TW)
Filed by Sunny Pro Co., Ltd., New Taipei (TW)
Filed on Jan. 9, 2024, as Appl. No. 18/407,580.
Claims priority of provisional application 63/479,203, filed on Jan. 10, 2023.
Prior Publication US 2024/0227428 A1, Jul. 11, 2024
Int. Cl. B43K 5/02 (2006.01); B43K 5/00 (2006.01); B43K 15/00 (2006.01); B43K 23/08 (2006.01)
CPC B43K 5/02 (2013.01) [B43K 15/00 (2013.01); B43K 5/005 (2013.01); B43K 23/08 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A biodegradable marker pen comprising a barrel, a cap, and an ink reservoir, wherein
the barrel has a hollow cylindrical structure, the ink reservoir is placed in the barrel, and the cap is detachably coupled with the barrel hermetically; and
the barrel, the cap, and the ink reservoir comprise 2 to 10 mass percentage of a biodegradable masterbatch respectively, wherein the biodegradable masterbatch comprises mono- or polyunsaturated carboxylic acid with 10 to 30 carbons and transition metal compounds.