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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
YUGENKAISHA SHINJO SEISAKUSHO	NISHINARIKU OSAKA

International Classification(s)

• 0808:FASTENING, SUPPORTING OR MOUNTING DEVICES NOT INCL....

• 2000 Application Filing Year
• 0808 Class
• 0 Applications Filed
• 0 Patents Issued To-Date
• 0 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Shinjo, Hiroshi	Osaka, JP	40	394
# of filed Patents : 40 Total Citations : 394
Shinjo, Katsumi	Osaka, JP	48	601
# of filed Patents : 48 Total Citations : 601
Shinjo, Tadashi	Sakai, JP	22	245
# of filed Patents : 22 Total Citations : 245

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Patent Citation Ranking

• 10 Citation Count
• 0808 Class

• 0 % this patent is cited more than
• 24 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
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

US Patent No: 7156952

Method and arrangement for oxygen delignification of cellulose pulp

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Abstract

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The invention relates to a method and arrangement for alkaline oxygen delignification of cellulose pulp. By adding alkali in the final phase of the oxygen delignification one can ensure that an optimal predetermined end-pH is obtained. This provides advantages in the subsequent bleaching since the bleachability is substantially improved in the form of reduced need for bleaching chemicals.

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Description

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Claims

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