Filter paper that disintegrates quickly in water
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United States of America Patent
Stats
-
Jul 19, 2016
Grant Date -
Jun 25, 2015
app pub date -
May 14, 2013
filing date -
Jul 26, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a paper that disintegrates quickly in water, for use as a filter material or filter wrapper paper of a cigarette filter. At least 80 wt % of the paper is formed by cellulose fibers. Of the cellulose fibers, at least 80 wt % are a mixture of long fiber pulp and mercerized pulp. 0 to 90 wt % of the content of the mixture is formed by mercerized pulp, and the rest is formed by long fiber pulp. The cellulose fibers of the mixture have a freeness of at most 30° SR according to ISO 5267. In the disintegration test using an apparatus as described in TAPPI T 261, the paper exhibits a disintegration of at least 60% after 30 seconds.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2013 Application Filing Year
- D21H Class
- 351 Applications Filed
- 305 Patents Issued To-Date
- 86.90 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D21H Class
- 0 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 19, 2028 |
