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. 01, 2025
Filed:
Dec. 13, 2022
Robert T. Bondokov, Watervliet, NY (US);
James R. Grandusky, Waterford, NY (US);
Jianfeng Chen, Ballston Lake, NY (US);
Shichao Wang, Troy, NY (US);
Toru Kimura, Tokyo, JP;
Thomas Miebach, Malta, NY (US);
Keisuke Yamaoka, Tokyo, JP;
Leo J. Schowalter, Latham, NY (US);
Robert T. Bondokov, Watervliet, NY (US);
James R. Grandusky, Waterford, NY (US);
Jianfeng Chen, Ballston Lake, NY (US);
Shichao Wang, Troy, NY (US);
Toru Kimura, Tokyo, JP;
Thomas Miebach, Malta, NY (US);
Keisuke Yamaoka, Tokyo, JP;
Leo J. Schowalter, Latham, NY (US);
CRYSTAL IS, INC., Green Island, NY (US);
Abstract
In various embodiments, single-crystal aluminum nitride boules and substrates have low Urbach energies and/or absorption coefficients at deep-ultraviolet wavelengths. The single-crystal aluminum nitride may function as a platform for the fabrication of light-emitting devices such as light-emitting diodes and lasers. The single-crystal aluminum nitride boules may advantageously have diameters that increase along at least portions of their lengths.