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:
Sep. 04, 2007
Filed:
Jan. 10, 2005
William A. Challener, Sewickley, PA (US);
Edward C. Gage, Mars, PA (US);
Tim Rausch, Gibsonia, PA (US);
Christophe Mihalcea, Pittsburgh, PA (US);
Keith Mountfield, Pittsburgh, PA (US);
William A. Challener, Sewickley, PA (US);
Edward C. Gage, Mars, PA (US);
Tim Rausch, Gibsonia, PA (US);
Christophe Mihalcea, Pittsburgh, PA (US);
Keith Mountfield, Pittsburgh, PA (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
Diffraction gratings for coupling an electromagnetic wave into a planar waveguide are disclosed. The diffraction grating may include a first diffraction grating and a second diffraction grating slanted relative to one another. Alternatively, the diffraction grating may include a first diffraction grating and a second diffraction grating spaced apart to form a gap therebetween.