RICOH ELECTRONIC DEVICES CO., LTD.

Patent Applications and Registrations

Patent applications and USPTO patent grants for RICOH ELECTRONIC DEVICES CO., LTD..The latest application filed is for "lighting system provided with dimmer apparatus and lighting equipment".

Company Profile

7.19.13

RICOH ELECTRONIC DEVICES CO., LTD. - Osaka JP
RICOH ELECTRONIC DEVICES CO., LTD. - Ikeda-city, Osaka 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

Patent	Date
Lighting System Provided With Dimmer Apparatus And Lighting Equipment App 20220117056 - SOHMA; Shohtaroh	2022-04-14
Semiconductor laser driver having electronic dimming function without using optical components Grant 11,223,184 - Sumino January 11, 2	2022-01-11
Laser Drive Apparatus For Semiconductor Laser For Video Display Apparatus App 20220006985 - KIYOKAWA; Masaki	2022-01-06
Constant Voltage Generating Circuit App 20210191442 - HINO; Takahiro	2021-06-24
Semiconductor Laser Driver And Electronic Device App 20200366057 - SUMINO; Daijiro	2020-11-19
Reference voltage generator circuit generating reference voltage based on band gap by controlling currents flowing in first and second voltage generator circuits Grant 10,635,127 - Hirose	2020-04-28
Reference Voltage Generator Circuit Generating Reference Voltage Based On Band Gap By Controlling Currents Flowing In First And App 20200057464 - HIROSE; Yohkoh	2020-02-20
Overvoltage protection circuit for protecting overvoltage corresponding to wide range of input voltage Grant 10,284,075 - Sohma , et al.	2019-05-07
Overvoltage Protection Circuit For Protecting Overvoltage Corresponding To Wide Range Of Input Voltage App 20190058323 - SOHMA; Shohtaroh ; et al.	2019-02-21
Power Supply Apparatus Converting Input Voltage To Predetermined Output Voltage And Controlling Output Voltage Based On Feedback Signal Corresponding To Output Voltage App 20180219473 - OGINO; Yuuta ; et al.	2018-08-02
Step up/down switching regulator Grant 9,812,959 - Shiwaya , et al. November 7, 2	2017-11-07
Switching regulator and control method thereof Grant 9,584,019 - Shiwaya February 28, 2	2017-02-28
Switching regulator incorporating operation monitor Grant 9,431,907 - Michishita August 30, 2	2016-08-30
Non-insulating type switching power supply device Grant 9,413,243 - Sohma August 9, 2	2016-08-09
Electronic device and method of electronic device for determining power source device Grant 9,146,261 - Funakoshi September 29, 2	2015-09-29
Trimming circuit, power supply including trimming circuit, and trimming method Grant 9,148,133 - Irisawa September 29, 2	2015-09-29
Signal transmitting-receiving control circuit and secondary battery protection circuit Grant 9,136,847 - Oshima September 15, 2	2015-09-15
Switching Regulator And Control Method Thereof App 20150229212 - Shiwaya; Yohichi	2015-08-13
Secondary cell protection circuit and battery Grant 9,106,081 - Arai August 11, 2	2015-08-11
Voltage monitor semiconductor device, battery pack, and electronic device employing battery pack Grant 9,103,893 - Kanzaki August 11, 2	2015-08-11
Semiconductor integrated circuit and semiconductor integrated circuit apparatus Grant 9,087,714 - Ueda July 21, 2	2015-07-21
Switching regulator Grant 9,069,366 - Hara June 30, 2	2015-06-30
Switching regulator, control method thereof and power-supply device Grant 9,071,125 - Michishita June 30, 2	2015-06-30
Charging circuit and charging method Grant 9,048,676 - Tsuji , et al. June 2, 2	2015-06-02

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