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:
Feb. 21, 1978
Filed:
Dec. 31, 1975
Heinz Kraus, Traunreut, DT;
Dr. Johannes Heidenhain GmbH, Traunreut, DT;
Abstract
An improved, thin layer, metallic diaphragm structure for electron microscopes is disclosed having a very thin sheet member, approximately 0.5 to 1 micron thick, surrounding the aperture which is attached to and supported by a reinforcing member approximately 30 microns thick, set away from the aperture. Both the thin sheet member and the reinforcing member are formed from the same heavy metal, preferably gold. A modified object diaphragm structure is also disclosed which is provided with a meshlike screen extending across the aperture to support electron absorbing elements located in the middle of the aperture. The meshlike elements of the screen are of such a narrow design that they are not resolvable by the electron beam of the microscope.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile