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. 09, 2025
Filed:
May. 28, 2021
Group14 Technologies, Inc., Woodinville, WA (US);
Akifumi Takeda, Tokyo, JP;
Masato Fujita, Tokyo, JP;
Yuji Ito, Tokyo, JP;
Hirofumi Inoue, Tokyo, JP;
Group14 Technologies, Inc., Woodinville, WA (US);
Abstract
An object of the present invention is to provide composite particles capable of suppressing oxidation over time of a Si—C composite material. Composite particles (B) of the present invention contains composite particles (A) containing carbon and silicon; and amorphous layers coating surfaces thereof, where the composite particles (B) have I/Iof 0.10 or more and 0.65 or less, and have R value (I/I) of 1.00 or more and 1.30 or less, when a peak due to silicon is present at 450 to 495 cm, an intensity of the peak is defined as I, an intensity of a G band (peak intensity in the vicinity of 1600 cm) is defined as I, and an intensity of a D band (peak intensity in the vicinity of 1360 cm) is defined as Iin a Raman spectrum, and where the composite particles (B) have a full width at half maximum of a peak of a 111 plane of Si of 3.0 deg. or more using a Cu-Kα ray in an XRD pattern.