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US 12,214,617 B2Granted
Biodegradable marker pen
AssigneeSunny Pro Co., Ltd.
InventorsChi-Ting Hsieh, Jung-Shan Huang, Shun-Chih Fang, Chao-Han Huang, Siu-Hei Choi
Life of this patent
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Abstract
A biodegradable marker pen including a barrel, a cap, and an ink reservoir. 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. The barrel, the cap, and the ink reservoir comprise 2 to 10 mass percentage of a biodegradable masterbatch respectively.
Claims15
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.
Dependencies are inferred from the claim text.