Degradable drinking straw
US11178988B2 · kind B2 · utility
0Cited by
3References
17Claims
0Family size
Inventor
Key dates
| Filing date | Nov 16, 2019 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Jul 17, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A disposable degradable drinking straw made of chitin contains water-activated degrading enzymes. Initially in inactive lyophilized (dry) form, the enzymes upon exposure to ambient water in environment degrade chitin-based drinking straw to chitosan, a benign compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.