The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2003
Filed:
Oct. 10, 2001
Applicant:
Inventors:
Gordon Cheng I. Chen, Chesapeake, VA (US);
Gary Peter Richardson, Bradford, GB;
Assignee:
Ciba Specialty Chemicals Water Treatments Ltd., Bradford, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 2/110 ;
U.S. Cl.
CPC ...
D21H 2/110 ;
Abstract
According to the present invention a process is provided for making paper or paper board comprising forming a cellulosic suspension, flocculating the suspension, draining the suspension on a screen to form a sheet and then drying the sheet, characterised in that the suspension is flocculated using a flocculation system comprising a siliceous material and organic microparticies which have an unswollen particle diameter of less than 750 nanometers.
Quick Actions:
Chen, Gordon Cheng I.. (2003). Manufacture of paper and paperboard (U.S. Patent No. 6524439). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6524439
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile