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. 10, 1980
Filed:
Jun. 14, 1979
Tadahito Nagayasu, Nagoyashi, JP;
Tomitake Higuchi, Nagoyashi, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
An antistatic composite filament is disclosed, which has a three-layer structure including a core layer, a sheath layer and an intermediate layer, each of which is continuous in the axial direction of the filament. The core layer is composed of an oriented and crystallized, electrically non-conductive synthetic polymer. The sheath layer is composed of a synthetic polymer of the same kind as of the polymer constituting the core layer. The intermediate layer is composed of an electrically conductive synthetic polymer containing carbon black dispersed therein and is present in the entire intermediate area between the core layer and sheath layer. This filament is advantageously used as material for an antistatic carpet and/or dark color articles of wear such as uniforms or the like.