Inventor · disambiguated record
Ken Atsumi
Also filed as: ATSUMI KEN
12 granted patents·5 pending applications·80 citations·filing 1996–2023
88Inventor score
Top patents by PatentIndex Score
17 records- 0176US6300841B1Atomic oscillator utilizing a high frequency converting circuit and an active, low-integral-number multiplierFUJITSU LTD·Filed 2000·Granted Oct 9, 2001·25 cites·27 claims
- 0274US6812800B2Atomic oscillatorFUJITSU LTD·Filed 2002·Granted Nov 2, 2004·17 cites·10 claims
- 0363US2025352992A1Method for manufacturing exhaust gas purification catalyst deviceCATALER CORP·Filed 2023·Application pending·0 cites
- 0459US6985043B2Atomic oscillatorFUJITSU LTD·Filed 2004·Granted Jan 10, 2006·11 cites·10 claims
- 0558US6801091B2Oscillator controller and atomic oscillatorFUJITSU LTD·Filed 2002·Granted Oct 5, 2004·6 cites·14 claims
- 0652US6570455B2Rubidium atom oscillator generating a stable frequencyFUJITSU LTD·Filed 2001·Granted May 27, 2003·8 cites·9 claims
- 0749US2018116367A1Cosmetic caseSHISEIDO CO LTD·Filed 2016·Application pending·0 cites
- 0848US7145403B2Static magnetic field applying structure for use in atomic oscillatorFUJITSU LTD·Filed 2004·Granted Dec 5, 2006·2 cites·16 claims
- 0945US9083318B2Digitally controlled oscillator and output frequency control methodFUJITSU LTD·Filed 2014·Granted Jul 14, 2015·0 cites·5 claims
- 1045US7855580B2Phase comparator, phase synchronizing circuit, and phase-comparison control methodFUJITSU LTD·Filed 2008·Granted Dec 21, 2010·1 cites·15 claims
- 1142US9906229B2Phase locked loop circuit and phase locked loop methodFUJITSU LTD·Filed 2016·Granted Feb 27, 2018·0 cites·8 claims
- 1242US9059719B2Phase difference detection method, phase difference detection circuit, and wireless power transmission deviceATSUMI KEN·Filed 2011·Granted Jun 16, 2015·0 cites·9 claims
- 1341US5712597ARubidium atom oscillator with temperature stabilized frequency outputFUJITSU LTD·Filed 1996·Granted Jan 27, 1998·10 cites·10 claims
- 1438US2010123492A1Control apparatus and clock synchronizing methodFUJITSU LTD·Filed 2009·Application pending·0 cites
- 1535US2018013505A1Data processing device and data processing methodFUJITSU LTD·Filed 2017·Application pending·0 cites
- 1631US8686797B2Phase locked loop circuit and communication deviceATSUMI KEN·Filed 2010·Granted Apr 1, 2014·0 cites·7 claims
- 1729US2001035795A1Rubidium atom oscillatorFiled 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Ken Atsumi files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →