Sandwich structure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 27, 2018
Issued Date -
N/A
app pub date -
Dec 13, 2013
filing date -
Dec 13, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A sandwich structure employs a core sheet including alternating peaks and valleys therein. In another aspect, a sandwich structure includes at least one metallic core and at least one adhesively bonded outer face sheet. Yet another aspect of a sandwich structure has raised ridges bridging between adjacent peaks in a core sheet in one direction but not in a perpendicular direction, thereby achieving different properties in the different sheet directions.
First Claim
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International Classification(s)
- 2013 Application Filing Year
- B21D Class
- 696 Applications Filed
- 611 Patents Issued To-Date
- 87.79 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- B21D Class
- 40.41 % this patent is cited more than
- 7 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 | Sep 27, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 27, 2029 |
