loadpatents
name:-0.0042750835418701
name:-0.0048749446868896
name:-0.00068378448486328
Koyama; Yasuyuki Patent Filings

Koyama; Yasuyuki

Patent Applications and Registrations

Patent applications and USPTO patent grants for Koyama; Yasuyuki.The latest application filed is for "class-d amplifier circuit".

Company Profile
0.2.2
  • Koyama; Yasuyuki - Kyoto JP
  • KOYAMA; Yasuyuki - Ukyo-ku JP
*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Patent Activity
PatentDate
Class-D amplifier circuit
Grant 10,367,459 - Koyama July 30, 2
2019-07-30
Class-d Amplifier Circuit
App 20180076781 - KOYAMA; Yasuyuki
2018-03-15
Audio signal amplifier circuit and portable telephone set and portable electronic device using the same audio signal amplifier circuit
Grant 6,792,121 - Koyama , et al. September 14, 2
2004-09-14
Audio signal amplifier circuit and portable telephone set and portable electronic device using the same audio signal amplifier circuit
App 20010030579 - Koyama, Yasuyuki ;   et al.
2001-10-18

uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.

While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.

All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.

© 2024 USPTO.report | Privacy Policy | Resources | RSS Feed of Trademarks | Trademark Filings Twitter Feed