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:
Nov. 13, 1990
Filed:
Feb. 24, 1989
Applicant:
Inventors:
Ian S Biggs, High Wycombe, GB;
Bronislaw Radvan, Flackwell Heath, GB;
Assignee:
The Wiggins Teape Group Limited, Basingstoke, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B28B / ; D21D / ; D21H / ; D21J / ;
U.S. Cl.
CPC ...
162101 ; 162141 ; 162218 ; 162231 ; 264 453 ; 264 50 ; 264 86 ;
Abstract
A process for forming a homogeneous sheet from particulate elements, (as herein defined), at least some of which have an inherent vertical mobility (as herein defined) in water at normal temperature and pressure of from about 1 to about 21 cms/sec, which comprises the steps of forming a foamed dispersion of said particulate elements, and depositing and draining said dispersion on a foraminous support.