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. 02, 1993
Filed:
Oct. 18, 1991
Jurgen Gunter, Sindelfingen, DE;
Siegfried Kohler, Ostfildern, DE;
Siegfried Lang, Gartringen-Rohrau, DE;
Luise Schellhorn, Sindelfingen, DE;
Erwin Lutz, Schonaich, DE;
Mercedes-Benz AG, , DE;
Abstract
A process brings out a high contrast in natural grain of a naturally pale wood via infrared irradiation having a wavelength which is as long as possible. This infrared radiation can come from a conventional infrared emitter or, more preferably, from a carbon dioxide laser. Due to the contact-free heating near the surface which is effective in a stagnant ambient atmosphere, the new wood part of the grain is browned, while the harder old wood part remains essentially unbrowned. This causes the natural grain of the wood to stand out in contrast. Due to the contact-free and turbulence-free mode of operation of the heating, the grain pattern produced is uniform. Any scratches or chatter marks in the wood are simply covered over and remain invisible.