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:
Nov. 21, 2017
Filed:
Oct. 01, 2014
Applicant:
Koninklijke Philips N.v., Eindhoven, NL;
Inventor:
John Brean Mills, Eindhoven, NL;
Assignee:
Koninklijke Philips N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 1/19 (2006.01); H01F 41/32 (2006.01); H01F 41/14 (2006.01); H01P 3/12 (2006.01); H01L 43/12 (2006.01); H01L 21/02 (2006.01); H01F 41/04 (2006.01);
U.S. Cl.
CPC ...
H01P 1/19 (2013.01); H01F 41/14 (2013.01); H01F 41/32 (2013.01); H01P 3/12 (2013.01); H01F 41/046 (2013.01); H01L 21/02197 (2013.01); H01L 43/12 (2013.01);
Abstract
The present invention relates to a method of manufacturing a ferrite rod. The method comprises etching cavities into two semiconductor substrates and depositing ferrite layers into the cavities. The semiconductor substrates are attached to each other such that the ferriote layers form a ferrite rod. The present invention employs conventional photolithography and bulk isotropic micromachining of semiconductor wafers to precisely and repeatably form a template or mold, into which magnetic material can be deposited to form a Faraday rotation or phase-shifting element.