Method of treating polymer compound and treatment system for the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jan 31, 2012
Grant Date -
Oct 14, 2010
app pub date -
Jun 23, 2010
filing date -
Apr 2, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of treating a polymer compound has the steps of: mixing and agitating the polymer compound and a chemical agent in an extruder while controlling the inside of the extruder to be kept at a high temperature and a high pressure to have a reaction mixture containing a polymer treated product; supplying the reaction mixture continuously into a high-pressure container disposed following the extruder and retaining the reaction mixture at the high temperature and high pressure for a predetermined time; then supplying the reaction mixture continuously to a chemical agent separator to separate the polymer treated product; and supplying the separated polymer treated product continuously to a molding means to form it into a molded material.
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 | |
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HITACHI METALS LTD | 2-70 KONAN 1-CHOME MINATO-KU TOKYO |
International Classification(s)

- 2010 Application Filing Year
- B28B Class
- 389 Applications Filed
- 199 Patents Issued To-Date
- 51.16 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Goto, Toshiharu | Hitachi, JP | 15 | 68 |
# of filed Patents : 15 Total Citations : 68 | |||
Iwamoto, Yoshihiko | Hiroshima, JP | 8 | 78 |
# of filed Patents : 8 Total Citations : 78 | |||
Kakizaki, Jun | Hiroshima, JP | 18 | 60 |
# of filed Patents : 18 Total Citations : 60 | |||
Yamazaki, Takanori | Hitachi, JP | 69 | 513 |
# of filed Patents : 69 Total Citations : 513 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 2 Citation Count
- B28B Class
- 13.43 % this patent is cited more than
- 13 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
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Apr 15, 2024 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Apr 15, 2024 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Mar 13, 2024 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Mar 13, 2024 |
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Aug 26, 2015 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Mar 13, 2012 | I | Issuance | |
Feb 22, 2012 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Nov 03, 2011 | ZAAB | NOTICE OF ALLOWANCE MAILED | free format text: ORIGINAL CODE: MN/=. |
Nov 02, 2011 | ZAAA | NOTICE OF ALLOWANCE AND FEES DUE | free format text: ORIGINAL CODE: NOA |
Nov 01, 2011 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Sep 17, 2009 | P | Published | |
Mar 16, 2009 | F | Filing | |
Mar 10, 2009 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OKADA, HIROKI;SASAKI, TAKESHI;MATSUSHITA, SHINGO;AND OTHERS;REEL/FRAME:022453/0491 Owner name: RICOH COMPANY, LTD., JAPAN Effective Date: Mar 10, 2009 |
Mar 17, 2008 | PD | Priority Date |

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