Inventor
Shigeo Yoshihara
Inventor
Tokyo, JP
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Mprimary
H04MTelephonic communication30%
H04BTransmission15%
H04NPictorial communication, e.g. television15%
H01QAntennas, i.e. radio aerials10%
B01DSeparation5%
C02FTreatment of water, waste water, sewage, or sludge5%
H03JTuning resonant circuits5%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses5%
H04WWireless communication networks5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
PatentTitleYear
RE041131'Portable telephone capable of increasing facility of operation'20107,097,318'Mobile phone provided with lighting, lighting control method and lighting control program'20066,690,925'Portable telephone capable of increasing facility of operation'20045,926,748'Portable radio apparatus capable of keeping antenna away from user when calling'19995,905,966'Portable radio apparatus capable of keeping antenna away from user when calling'19994,768,220'Channel selection in a multichannel access radio communication system without occurrence of interference'19884,677,688'Radio transceiver including an antenna switching circuit'19874,673,892'Phase locked loop frequency synthesizer with battery saving circuit'19874,152,218'Method for the distillation of sea water'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979Patents assigned to HITACHI LTD (1)· patent assignee history
1979Based in Kure, JP· patent location history
1987–2010Patents assigned to NEC CORP (8)· patent assignee history
1987–1999Based in Tokyo, JP· patent location history
2004–2010Based in Shizuoka, JP· patent location history
2006Based in Kakegawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NEC CORP | 8 | 1987–2010 |
| HITACHI LTD | 1 | 1979 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 5 | 1987–1999 |
| Shizuoka, JP | 2 | 2004–2010 |
| Kakegawa, JP | 1 | 2006 |
| Kure, JP | 1 | 1979 |