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:
Jun. 16, 1998
Filed:
Jan. 19, 1993
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F / ;
U.S. Cl.
CPC ...
162110 ; 162314 ;
Abstract
A method of producing watermark paper comprising forming a patterned wire by fixing and bonding a lace to a cloth wire for papermaking, fitting this patterned wire to a cylinder mould of a cylinder-vat machine or a dandy roll as a face wire, and making paper by using the cylinder mould or the dandy roll to which the patterned wire is fitted. This method can easily and economically produce watermark paper having a delicate and complicated lace pattern in excellent gradation.