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:
Oct. 01, 1991
Filed:
Apr. 05, 1990
Applicant:
Inventors:
Assignee:
Huels Aktiengesellschaft, Marl, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; C08K / ;
U.S. Cl.
CPC ...
523137 ; 524413 ; 430273 ; 430541 ; 430945 ;
Abstract
Molding compounds, semi-finished products and finished articles comprising polymeric material which can be inscribed by means of laser light. The products contain an additive which is virtually colorless in the visible spectral range and produces a marking with high color contrast in the visible spectral range under the effect of laser light outside the visible range.