US Patent 7364641 Manufacture of paper and paper board
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Patent Inventor Names
Gordon Cheng Chen0
Stephanie Caine Williams0
Swindell Allen Grimsley0
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Patent abstract
Process for making paper or paper board comprising, forming an aqueous cellulosic suspension, adding a retention system to the cellulosic suspension, draining the suspension on a screen to form a sheet and drying the sheet, wherein the retention system comprises a swelling clay which has a TAPPI brightness of at least 70.
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US Patent 07364641 Manufacture of paper and paper board US Patent 7364641 Manufacture of paper and paper board
Infobox
Patent Number
073646410
Patent Number
73646410
Edits on 22 Mar, 2023
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Infobox
Is a
Patent Jurisdiction
Patent Number
073646410
Date of Patent
April 29, 2008
0Patent Application Number
104799420
Date Filed
June 18, 2002
0Official Website
Patent Primary Examiner
Edits on 17 Jun, 2022
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US Patent 07364641 Manufacture of paper and paper board
Infobox
Is a
Patent jurisdiction
Patent number
07364641
Date of patent
April 29, 2008
Patent application number
10479942
Date Filed
June 18, 2002
Patent primary examiner
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