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:
Dec. 12, 2023
Filed:
Dec. 08, 2021
Applicant:
Crystal Is, Inc., Green Island, NY (US);
Inventors:
Robert T. Bondokov, Watervliet, NY (US);
James R. Grandusky, Waterford, NY (US);
Jianfeng Chen, Ballston Lake, NY (US);
Sean P. Branagan, Green Island, NY (US);
Shichao Wang, Troy, NY (US);
Toru Kimura, Tokyo, JP;
Thomas Miebach, Malta, NY (US);
Keisuke Yamaoka, Fuji, JP;
Leo J. Schowalter, Latham, NY (US);
Assignee:
Crystal IS, Inc., Green Island, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C30B 29/40 (2006.01); C30B 23/02 (2006.01);
U.S. Cl.
CPC ...
C30B 29/403 (2013.01); C30B 23/02 (2013.01);
Abstract
In various embodiments, single-crystal aluminum nitride boules and substrates are highly visibly transparent and 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.