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. 20, 1978
Filed:
Dec. 29, 1976
Andrew G Johnson, Concord, CA (US);
Other;
Abstract
An electron microscopy coating apparatus and coating methods incorporate a specimen mounting arrangement which is used both for coating specimens which are to be viewed by scanning electron microscopy (SEM) and for coating specimens which are to be viewed by transmitted electron microscopy (TEM) and for coating specimens for the recently developed scanning-transmitted electron microscopy (STEM). The coating apparatus and method includes a hood and a mixer disc for coating by cold cathode sputtering and can also be used (with arc type electrodes in place of the hood and mixer disc) for coating by either charged ion evaporation or straight film evaporation. A biasing direct current provides a differential charge for cold cathode sputtering and charged ion evaporation. For charged ion evaporation the negative lead of the direct current is connected to one electrode of the evaporator and the positive lead of the direct current is connected to the base to provide a differential charge (a negative charge on the evaporated ion and a positive charge on the specimen) to attract the evaporated ions to the specimen.