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

Patent Owner(s)

Patent Owner	Address
PROCESS EVALUATION AND DEVELOPMENT CORPORATION A CORP OF DEL	3400 FIRST INTERNATIONAL BLDG DALLAS TX 75270

International Classification(s)

• D21C:PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE ....

• 1980 Application Filing Year
• D21C Class
• 48 Applications Filed
• 0 Patents Issued To-Date
• 0 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Villavicencio, Eduardo J	Mexico City, MX	12	107
# of filed Patents : 12 Total Citations : 107

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Patent Citation Ranking

• 8 Citation Count
• D21C Class

• 0 % this patent is cited more than
• 43 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: 4347101

Process for producing newsprint

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Abstract

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A high quality newsprint pulp can be produced from wood or vegetable fibers by thermomechanically pulping one portion of these fibers and thermochemically pulping the remaining portion. After combining these pulps the result is a pulp which has a GE brightness of 55 to 60, an opacity of 93 to 96 percent, and a relatively high tear strength. A pulp useful for making low strength papers can be produced by solely thermomechanically pulping fiber and directly using this pulp to make such products.

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Description

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Claims

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Legal Events

 

• CC1988
• STCF1982
• I1982
• AS1981
• F1980
• PD1980

Date	Code	Event	Description
May 31, 1988	CC	CERTIFICATE OF CORRECTION
Sep 01, 1982	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Aug 31, 1982	I	Issuance
Dec 10, 1981	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VILLAVICENCIO, EDUARDO J.;REEL/FRAME:004003/0854 Owner name: PROCESS EVALUATION AND DEVELOPMENT CORPORATION, 34 Effective Date: Dec 10, 1981 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VILLAVICENCIO, EDUARDO J.;REEL/FRAME:004003/0854 Owner name: PROCESS EVALUATION AND DEVELOPMENT CORPORATION, A Effective Date: Dec 10, 1981
Nov 24, 1980	F	Filing
Nov 24, 1980	PD	Priority Date