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:
Mar. 20, 1990
Filed:
Sep. 28, 1987
Applicant:
Inventors:
Richard G McAllister, Sterling, MA (US);
Lawrence E McEnroe, III, Westminster, MA (US);
Assignee:
James River Corporation, Richmond, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162125 ; 162128 ; 162129 ; 162135 ; 162138 ; 162146 ; 1621818 ; 206328 ; 2065242 ; 2065243 ; 2065244 ; 427121 ; 428449 ; 428452 ; 428535 ; 4285377 ;
Abstract
The present invention provides a multilayer fibrous material suitable for use as an EMI and RFI shielding packaging material and a process for producing the same comprising first and second outer layers formed of paper or paperboard and an inner layer formed of paper or paperboard containing conductive carbon. The invention also provides a method of providing antistatic properties to the packaging material.