Method of making a melt-blown filter medium for use in air filters in internal combustion engines and product
US6932923B2 · kind B2 · utility
8Cited by
17References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 2003 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | May 29, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention involves using a melt-blowing process to make a filter medium defining pores having a pore size of between 3 and 12 microns. The filter medium is made of a thermoplastic polymer and is adapted for use in an internal combustion engine air filter. A profile is used in the melt-blowing process to mold melt blown fibers into the filter medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.