Elsass
Christiane Elsass, Goleta, CA US
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20130016750 | Surface Morphology of Non-Polar Gallium Nitride Containing Substrates - Optical devices such as LEDs and lasers are discloses. The devices include a non-polar gallium nitride substrate member having an off-axis non-polar oriented crystalline surface plane. The off-axis non-polar oriented crystalline surface plane can be up to about −0.6 degrees in a c-plane direction and up to about −20 degrees in a c-plane direction in certain embodiments. In certain embodiments, a gallium nitride containing epitaxial layer is formed overlying the off-axis non-polar oriented crystalline surface plane. In certain embodiments, devices include a surface region overlying the gallium nitride epitaxial layer that is substantially free of hillocks. | 01-17-2013 |
Christiane Poblenz Elsass, Goleta, CA US
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20140295595 | OPTICAL DEVICE STRUCTURE USING GaN SUBSTRATES FOR LASER APPLICATIONS - An optical device includes a gallium nitride substrate member having an m-plane nonpolar crystalline surface region characterized by an orientation of about −1 degree towards (000-1) and less than about +/−0.3 degrees towards (11-20). The device also has a laser stripe region formed overlying a portion of the m-plane nonpolar crystalline orientation surface region. In a preferred embodiment, the laser stripe region is characterized by a cavity orientation that is substantially parallel to the c-direction, the laser stripe region having a first end and a second end. The device includes a first cleaved c-face facet, which is coated, provided on the first end of the laser stripe region. The device also has a second cleaved c-face facet, which is exposed, provided on the second end of the laser stripe region. | 10-02-2014 |
Christopher Elsass, Santa Barbara, CA US
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20120044610 | Y-Doped Barium Strontium Titanate For Stoichiometric Thin Film Growth - Disclosed is a process for generating thin-film barium strontium titanate (“BST”) having a lattice comprised of a plurality of A lattice sites and a B lattice site, in which a yttrium may be found at a location of at least one location of the plurality of A lattice sites or the B lattice site. In one embodiment, the plurality of A lattice sites comprises a location for at least one from a group consisting of barium and strontium. In one embodiment, the B lattice site comprises a location for a titanium. A capacitor having the inventive Y-doped BST dielectric is also disclosed. | 02-23-2012 |
Joshua Randall Elsass, Wadsworth, OH US
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20090194212 | TIRE TREAD DISCHARGE GROOVES WITH TEXTURED BASES - The present invention is directed to a pneumatic tire comprising an axis of rotation and a tread. The tread has a plurality of traction elements and a discharge groove. The discharge groove has a base interposed between radially extending sides formed by side walls of the traction elements. The base of the discharge groove defines a matrix of circumferentially extending rectangular ramp structures. One ramp structure of the matrix extends circumferentially, from a radially inner first end portion, in a direction of rotation of the tire and radially outward to a radially outer second end portion. The radially outer second end portion defines an edge portion extending parallel to the axis of rotation of the tire. The edge portion improves traction of the tire and evacuation of the discharge groove. | 08-06-2009 |
20100059157 | MULTI-PURPOSE TIRE - A tire has a circumferential tread, the tread including shoulder tread regions configured for off-road performance separated by and interlocking with a center tread region configured for on-road performance. The shoulder tread regions are defined by a repeating pattern of two or more distinct shoulder tread elements and the center tread region is defined by a repeating pattern of two or more distinct center tread elements. The shoulder tread elements each have a ground contacting surface area greater than a ground contacting surface area of the center tread elements. The center tread elements extend at a relatively greater angle of inclination with respect to an equatorial centerplane of the tire and the shoulder tread elements extend at a relatively lesser angle of inclination with respect to the centerplane. The center tread elements and the shoulder tread elements are irregular and asymmetrical about a longitudinal central axis and a transverse central axis and, together, total five or more (three in the center tread region and two in the shoulder tread region) tread blocks of mutually distinctive geometric shape. | 03-11-2010 |