Description
Class D21B : FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
Subclass 1/00: Fibrous raw materials or their mechanical treatment (beaters D21D 1/00)
D21B 1/00
Sub-Class
Stats
- 8 US PATENTS IN FORCE
- 1 US APPLICATIONS PENDING
- 3 Total Patent Owners
- 81 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12168251 | Liquid-absorbing raw materials processing system and operating method thereof | Sep 17, 22 | Dec 17, 24 | YI CHUN GREEN TECHNOLOGY CO., LTD. |
| 12018432 | Processes and systems for producing nanocellulose from old corrugated containers | Aug 18, 20 | Jun 25, 24 | GranBio Intellectual Property Holdings, LLC |
| 11198087 | Collection device, collection method, and fibrous feedstock recycling device | Feb 04, 19 | Dec 14, 21 | SEIKO EPSON CORPORATION |
| 10895869 | Raw material supply device, raw material supply method, and sheet manufacturing apparatus | Mar 29, 17 | Jan 19, 21 | SEIKO EPSON CORPORATION |
| 10794001 | Rotary feeder with recess for protective baffle and shear edge assembly | Nov 24, 15 | Oct 06, 20 | Andritz, Inc. |
| 9533927 | Conversion of a low viscosity ligno-cellulosic biomass slurry into polyols | Oct 31, 14 | Jan 03, 17 | Biochemtex S.p.A. |
| 8833681 | Method and apparatus for defibrillating cellulose fibers | Jun 23, 10 | Sep 16, 14 | BASF SE |
| 5985147 | Integrated system and method for purifying water, producing pulp, and improving soil quality | Dec 15, 98 | Nov 16, 99 | LEIDOS, INC. |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0043,508 | PROCESSES AND SYSTEMS FOR PRODUCING NANOCELLULOSE FROM OLD CORRUGATED CONTAINERS | Jun 12, 24 | Feb 06, 25 | Not available |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 34 Months (last 2 years Issuances)
- 34 Months (last 5 years Issuances)