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:
Dec. 20, 1988
Filed:
Nov. 24, 1987
Stephen C Koehn, Round Rock, TX (US);
Ricky A Plautz, Georgetown, TX (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
A transparent box for protecting against damage from electrostatic discharge and sheet material to be cut into a box blank for forming the same. The box blank has an electrically insulating, transparent, polymeric sheet and a continuous, transparent, electrically conductive layer disposed on at least one surface of the polymeric sheet. The polymeric sheet has grooves on at least one surface forming fold lines and the sheet material has sufficient stiffness to enable the sheet material when cut into a box blank and folded into a box to hold its shape. Grooves formed into the surface of polymeric sheet 14 and the subsequent folding do not disturb the continuous electrically conductive layer enabling the completed box to have complete electrostatic shielding from all directions.