Inventor
Hirotaka Oosawa
Inventor
Isesaki, JP
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H03Lprimary
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses35%
H04BTransmission21%
H03DDemodulation or transference of modulation from one carrier to another12%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner9%
H03JTuning resonant circuits9%
G01RMeasuring electric variables6%
H03FAmplifiers3%
H03GControl of amplification3%
H04LTransmission of digital information, e.g. telegraphic communication3%
PatentTitleYear
7,450,921'Communication semiconductor integrated circuit device for use in a mobile communication device for correcting variations in the oscillation frequency of a transmission oscillator by calibrating a current of the charge pump'20087,313,369'Communication semiconductor integrated circuit and radio communication system'20077,279,991'Semiconductor integrated circuit with PLL circuit'20077,269,402'PLL circuit having a multi-band oscillator and compensating oscillation frequency'20077,263,340'PLL circuit having a multi-band oscillator and compensating oscillation frequency'20077,242,916'Communication semiconductor integrated circuit device and wireless communication system'20077,187,911'Calibrated PLL for wide band communication semiconductor integrated polar loop transmitter'20077,154,341'Communication semiconductor integrated circuit device and wireless communication system'20067,146,143'Communication semiconductor integrated circuit device and wireless communication system'20067,103,337'PLL circuit having a multi-band oscillator and compensating oscillation frequency'20067,085,587'Signal processing semiconductor integrated circuit device and wireless communication system'20067,020,444'High frequency semiconductor integrated circuit and radio communication system'20066,917,213'Semiconductor integrated circuit device'20056,900,700'Communication semiconductor integrated circuit and radio communication system'20056,597,191'Semiconductor integrated circuit device'2003Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2003Patents assigned to HITACHI LTD (1)· patent assignee history
2003–2008Based in Isesaki, JP· patent location history
2005–2008Patents assigned to RENESAS TECH CORP (10)· patent assignee history
2005–2007Patents assigned to TTP COMMUNICATIONS LTD (3)· patent assignee history
2006–2007Patents assigned to TTP COM LTD (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RENESAS TECH CORP | 10 | 2005–2008 |
| TTP COM LTD | 3 | 2006–2007 |
| TTP COMMUNICATIONS LTD | 3 | 2005–2007 |
| HITACHI LTD | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Isesaki, JP | 15 | 2003–2008 |