Expanded metal filters
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 21, 2020
Grant Date -
Jul 23, 2009
app pub date -
Mar 19, 2009
filing date -
Sep 21, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Expanded metal sheets are used to produce tubular filters. The expanded metal sheet has a multiplicity of rows of openings arranged to reduce nesting when the sheet is rolled on itself. In particular, the pitch between the rows of openings, the sizes of the openings, or both the pitch between the rows of openings and the sizes of the openings are varied to reduce nesting when the expanded metal sheet is rolled on itself. The filters can include external circumferential grooves, rounded corners produced by a point loading process, textured surfaces between openings, and/or torturous internal paths produced by non-perforated areas of an expanded metal sheet. The expanded metal sheet can be composed of carbon steel coated with a material having a higher heat conductivity, e.g., tin. Among other things, the filters can be used in automobile airbag inflators to capture slag and absorb heat produced by the inflator's explosive charge.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2009 Application Filing Year
- B60R Class
- 1154 Applications Filed
- 791 Patents Issued To-Date
- 68.55 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- B60R Class
- 34.04 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 21, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 21, 2032 |
