Matsumoto; Keiichi

Patent Applications and Registrations

Patent applications and USPTO patent grants for Matsumoto; Keiichi.The latest application filed is for "optical amplification device, optical transmission system, and optical amplification method".

Company Profile

2.10.14

Matsumoto; Keiichi - Tokyo JP
Matsumoto; Keiichi - Kobe N/A JP
Matsumoto; Keiichi - Himeji N/A JP
Matsumoto; Keiichi - Himeji-shi JP
Matsumoto; Keiichi - Hyogo JP
Matsumoto; Keiichi - Tokorozawa 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
Optical amplifying apparatus and method of amplifying optical signal Grant 11,374,377 - Le Taillandier De Gabory , et al. June 28, 2	2022-06-28
Optical Amplification Device, Optical Transmission System, And Optical Amplification Method App 20220166179 - TAKESHITA; Hitoshi ; et al.	2022-05-26
Optical amplifier and control method therefor Grant 11,329,444 - Le Taillandier de Gabory , et al. May 10, 2	2022-05-10
Optical Amplifier, Optical Amplifier Equalizing Method, And Transmission System App 20220045473 - MATSUMOTO; Keiichi ; et al.	2022-02-10
Optical Amplification Apparatus And Optical Amplification Method App 20210399514 - TAKESHITA; Hitoshi ; et al.	2021-12-23
Optical Amplifying Apparatus And Method Of Amplifying Optical Signal App 20210194218 - LE TAILLANDIER DE GABORY; Emmanuel ; et al.	2021-06-24
Optical Amplifier, Control Method For Optical Amplifier, And Optical Communication System App 20210057871 - MATSUMOTO; Keiichi ; et al.	2021-02-25
Optical Amplifier And Optical Amplification Method App 20210057869 - TAKESHITA; Hitoshi ; et al.	2021-02-25
Monitoring Apparatus For Optical Amplifier, Optical Amplifying System, And Method Of Monitoring Amplified Optical Signal App 20210044077 - LE TAILLANDIER DE GABORY; Emmanuel ; et al.	2021-02-11
Optical Amplifier, Optical Communication System And Optical Amplification Method App 20210028590 - LE TAILLANDIER DE GABORY; Emmanuel ; et al.	2021-01-28
Optical Fiber Amplifier, Optical Fiber Amplifier Control Method, And Transmission System App 20200412079 - MATSUMOTO; Keiichi ; et al.	2020-12-31
Optical Amplifier And Control Method Therefor App 20190221987 - LE TAILLANDIER DE GABORY; Emmanuel ; et al.	2019-07-18
Tomographic equipment, imaging system provided therewith, and imaging data acquisition method Grant 9,134,441 - Mizuta , et al. September 15, 2	2015-09-15
Discharge lamp lighting apparatus Grant 9,137,881 - Yamada , et al. September 15, 2	2015-09-15
Discharge Lamp Lighting Apparatus App 20130271024 - Yamada; Koji ; et al.	2013-10-17
Tomographic Equipment, Imaging System Provided Therewith, And Imaging Data Acquisition Method App 20110019895 - Mizuta; Tetsuro ; et al.	2011-01-27
Ultra-high pressure mercury lamp Grant 7,649,319 - Matsumoto , et al. January 19, 2	2010-01-19
Ultra-high Pressure Mercury Lamp App 20060273722 - MATSUMOTO; Keiichi ; et al.	2006-12-07
Automatic loading disc player Grant 4,879,705 - Aoyagi , et al. November 7, 1	1989-11-07
Servo apparatus for tracking and rotational speed control Grant 4,748,608 - Matsumoto , et al. May 31, 1	1988-05-31
Tracking servo control system for an information read-out system Grant 4,544,872 - Hirano , et al. October 1, 1	1985-10-01

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.