Inventor
Yoshihiro Yokoyama
Inventor
Yokohama, JP
Overview
Patents· 19 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television19%
G06FElectric digital data processing15%
G06TImage data processing or generation, in general15%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers15%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
G03GElectrography7%
B41JTypewriters4%
G06VImage or video recognition or understanding4%
G09GArrangements or circuits for control of indicating devices using static means to present variable information4%
G11BInformation storage based on relative movement between record carrier and transducer4%
PatentTitleYear
6,937,259'Image forming device and recording intermediate belt mounting jig'20056,005,617'Electronic camera with mechanical subscanner'19995,901,254'Apparatus and method for image reduction'19995,625,810'Data file apparatus for registering and retrieving data files in accordance with attribute information thereof'19975,590,317'Document information compression and retrieval system and document information registration and retrieval method'19965,495,322'Electrophotographic developing apparatus which utilizes single-component developing material'19965,452,102'Image processing unit'19955,369,742'Image file and retrieving apparatus and method'19945,353,397'Registration/search system for registering and searching image data using vector data attributes'19945,181,260'Method for determining the amount of skew of image, method for correcting the same, and image data processing system'19935,048,101'Electronic filing device'19915,034,733'Method and apparatus for rotating dots data'19914,943,857'Synchronizing circuit for an external signal and an internal sampling clock signal'19904,736,435'Ear piece transducer'19884,668,842'Headphone'19874,609,277'Electro photographic copier with photoconductive belt'19864,429,194'Earphone'19844,376,233'Securing of lead wires to electro-acoustic transducers'19834,279,006'Magnetic tape recording and/or reproducing apparatus'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–2005Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (5)· patent assignee history
1983–1988Patents assigned to SONY CORP (4)· patent assignee history
1983–1987Based in Kanagawa, JP· patent location history
1984–1999Based in Yokohama, JP· patent location history
1986Based in Settsu, JP· patent location history
1990–1999Patents assigned to HITACHI LTD (10)· patent assignee history
1996–1999Based in Takatsuki, JP· patent location history
2005Based in Osaka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 10 | 1990–1999 |
| MATSUSHITA ELECTRIC INDUSTRIAL CO LTD | 5 | 1981–2005 |
| SONY CORP | 4 | 1983–1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 12 | 1984–1999 |
| Takatsuki, JP | 2 | 1996–1999 |
| Kanagawa, JP | 2 | 1983–1987 |
| Osaka, JP | 1 | 2005 |
| Settsu, JP | 1 | 1986 |