Pulper for a fiber stock preparation system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 21, 2003
Grant Date -
Nov 14, 2002
app pub date -
May 11, 2001
filing date -
May 11, 2001
priority date (Note) -
Expired
status (Latency Note)
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Importance

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Abstract
A pulper for pulping a fiber source includes a tank and a rotor. The tank has a plurality of annular-shaped inner walls defining a chamber. The plurality of walls include a first wall, second wall, third wall and forth wall which are sequentially vertically adjoining relative to each other. Each of the walls are disposed at an angle relative to a vertical reference. The first wall is disposed at an angle of between 45 and 70.degree. relative to the vertical reference. The second wall is disposed at an angle of between 20 and 45.degree. relative to the vertical reference. The third wall is disposed generally parallel to the vertical reference. The forth wall is disposed at an angle of between 10 and 30.degree. relative to the vertical reference. The tank further includes two baffles within the chamber which inhibit rotational movement of the fiber source within the chamber.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
VOITH PAPER INC | 2620 E GLENDALE AVENUE APPLETON WI 54931 |
International Classification(s)

- 2001 Application Filing Year
- B02C Class
- 307 Applications Filed
- 116 Patents Issued To-Date
- 37.79 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Doelle, Klaus | Appleton, WI | 56 | 462 |
# of filed Patents : 56 Total Citations : 462 | |||
Heise, Oliver U | Menasha, WI | 10 | 53 |
# of filed Patents : 10 Total Citations : 53 | |||
Lorenz, Kurt W | Appleton, WI | 4 | 82 |
# of filed Patents : 4 Total Citations : 82 | |||
Rossum, Mike Van | Greenleaf, WI | 1 | 2 |
# of filed Patents : 1 Total Citations : 2 | |||
Theobald, Mike | Appleton, WI | 1 | 2 |
# of filed Patents : 1 Total Citations : 2 | |||
Wickensberg, Steve | Reedsville, WI | 1 | 2 |
# of filed Patents : 1 Total Citations : 2 |
Cited Art Landscape
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Patent Citation Ranking
- 2 Citation Count
- B02C Class
- 6.82 % this patent is cited more than
- 22 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
May 21, 2020 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 12TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2553); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 12 |
May 30, 2016 | FPAY | FEE PAYMENT | year of fee payment: 8 |
May 25, 2012 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Dec 16, 2008 | I | Issuance | |
Nov 25, 2008 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Apr 07, 2005 | P | Published | |
Mar 05, 2004 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PRUDHAM, DANIEL;REEL/FRAME:014444/0194 Owner name: SOCIETE INDUSTRIELLE DE SONCEBOZ, S.A., SWITZERLAN Effective Date: Mar 05, 2004 |
Jul 12, 2002 | F | Filing | |
Jul 18, 2001 | PD | Priority Date |

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