Crumple-resistant security sheet, a method of manufacturing such a sheet, and a security document including such a sheet
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United States of America Patent
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Issued Date -
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app pub date -
May 28, 2008
filing date -
May 31, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a crumple-resistant security sheet comprising fibers; an anionic polymer in a proportion lying in the range 5% to 45% by dry weight relative to the total dry weight of the fibers, and presenting a glass transition temperature greater than 40° C.; and a main cationic flocculation agent in a quantity lying in the range 1% to 5% by dry weight relative to the total dry weight of the fibers.
First Claim
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International Classification(s)
- 2008 Application Filing Year
- D21H Class
- 183 Applications Filed
- 114 Patents Issued To-Date
- 62.30 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D21H Class
- 0 % 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 | Jan 17, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 17, 2030 |
