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:
Jan. 04, 1977
Filed:
Jul. 24, 1975
Applicant:
Inventors:
Hans Vowinkel, Florsheim, (Main), DT;
Hans Rober, Frankfurt am Main, DT;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 1 / ;
Abstract
The thermostability of shaped articles of thermoplastic material is determined by the visible alteration of the surface of the article caused by a focused hot gas jet which is blown onto the surface. The temperature of the gas and the gas rate hitting the surface per unit of time, and also the residence time of the shaped article under the influence of the hot gas jet are a measure for the thermostability.