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:
Apr. 08, 2008
Filed:
Mar. 11, 2002
Adrian Paul Burden, Singapore, SG;
Stephen Michael Baigrie, Swindon, GB;
Adrian Paul Burden, Singapore, SG;
Stephen Michael Baigrie, Swindon, GB;
Printable Field Emitters Limited, Shilton, GB;
Abstract
Graphite comprises atoms arranged in discrete layers (). The perpendicular distance between these layers is the 'd-spacing' (). A field emission material is obtained by expanding the d-spacing (). Such expansion may be achieved by an intercalant that has been introduced between layers of the material. Such an intercalant may reside, or may no longer reside, in the material. The material may be placed in position on a substrate by a printing process, prior to expansion. Such field emission material may be used in cold cathodes in field electron emission devices.