Piezoelectric device comprising a membrane comprising fibres of a polyhydroxyalkanoate
US12262640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2018 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | May 5, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/2237
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A piezoelectric device includes a membrane having fibres of a polyhydroxyalkanoate (PHA), having average diameter between 100 nm and 2000 nm, and at least one oxide having piezoelectric properties in a subdivided form having at least one average size between 1 nm and 100 nm. Preferably, the PHA fibres are produced by electrospinning. Advantageously, demonstrating good piezoelectric properties and considering that the piezoelectric device includes PHA, a biodegradable and biocompatible material, the device can be used in biological systems, for example in flexible micro-actuator systems for drug delivery and in the engineering of biological tissues (such as, for example, in pacemaker devices).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.