Modified fiber from shredded pulp sheets, methods, and systems
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 24, 2022
Grant Date -
Mar 21, 2019
app pub date -
Nov 15, 2018
filing date -
Dec 29, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Methods of forming crosslinked cellulose include mixing a crosslinking agent with cellulose mat fiber fragments composed of hydrogen-bonded cellulose fibers and having a solids content of about 45-95% to form a substantially homogenous mixture of non-crosslinked, individualized cellulose fibers, drying the resulting mixture to 85-100% solids, then curing the dried mixture under conditions effective to crosslink the cellulose fibers. Some of such methods may include fragmenting a cellulose fiber mat to form the mat fragments. Systems include a mixing unit (such as a high-consistency mixer) configured to form, from the mat fragments and a crosslinking agent, a substantially homogenous mixture of non-crosslinked, individualized cellulose fibers and crosslinking agent, at ambient conditions, a drying unit to dry the substantially homogenous mixture to a consistency of 85-100%, and a curing unit and to cure the crosslinking agent to form dried and cured crosslinked cellulose fibers.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2018 Application Filing Year
- D21B Class
- 59 Applications Filed
- 33 Patents Issued To-Date
- 55.94 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D21B Class
- 0 % this patent is cited more than
- 3 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Nov 24, 2025 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 24, 2029 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 24, 2033 |