Inventor
Akira Hayakawa
Inventor
Tokyo, JP
Overview
Patents· 46 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography32%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems13%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications12%
D05BSewing6%
G06FElectric digital data processing6%
H03KPulse technique4%
G11BInformation storage based on relative movement between record carrier and transducer3%
B41MPrinting, duplicating, marking, or copying processes1%
B42DBooks1%
F01DNon-positive displacement machines or engines, e.g. steam turbines1%
PatentTitleYear
10,598,561Rotational solid20209,748,850'Switching power-supply with switching frequency correction'20179,742,289'Integrated circuit and switching power-supply device'20179,614,448'Switching power-supply device'20179,590,615'Integrated circuit and switching power-supply device performing output control through switching operation'20179,564,813'Switching power-supply device'20179,559,600'Switched-mode power supply device'20179,525,353'Switching power-supply device for performing control of output voltage switching operation'20169,490,715'Switched-mode power supply device'20169,455,639'Switched-mode power supply device'20169,141,042'Image forming apparatus having misregistration control'20159,104,317'Computer system and method of controlling I/O with respect to storage apparatus'20157,953,359'Apparatus for heating an image formed on a recording material'20117,766,659'Series unit with moveable terminal(s) for connection of coaxial cables'20107,515,841'Image forming apparatus for preventing defective fixing of a toner image'20097,257,342'Image forming apparatus'20077,227,482'Complex band-pass filter for use in digital radio receiver and complex band-pass Δ-Σ AD modulator using the same'20077,218,873'Image generating apparatus'20077,039,472'Schedule execution managing apparatus and method'20067,012,496'Noise elimination device and method for installing the same'20066,947,676'Image forming apparatus and controlling method therefor determining state use of cartridge'20056,839,723'Information management system'20056,809,609'Device for preventing mixing of extrinsic noise and protector'20046,583,389'Image heating apparatus, heater for heating image and manufacturing method thereof'20036,377,777'Fluorine-containing resin-coated pressure roller and heat-fixing device'20026,227,128'Sewing machine having a display'20016,175,699'Image fixing device with heater control'20016,123,040'Sewing machine capable of changing a needle position'20006,094,559'Fixing apparatus having cleaning mode and storage medium storing program therefor'20005,986,835'Control apparatus and method for conveyance control of medium in library apparatus and data transfer control with upper apparatus'19995,924,372'Embroidery data processing device for sewing machine including means for limiting repeated use of embroidery data'19995,924,373'Electronic sewing machine control having numeric keys on display'19995,856,048'Information-recorded media and methods for reading the information'19995,852,763'Image heating apparatus'19985,801,360'Image fixing apparatus'19985,669,039'Image heating apparatus capable of varying feeding intervals between recording materials'19975,654,839'Control apparatus and method for conveyance control of medium in library apparatus and data transfer control with upper apparatus'19975,621,510'Image heating apparatus with driving roller having low thermal expansion coefficient outer layer'19975,592,276'Image fixing device with heater responsive to thermal stress'19975,552,874'Image fixing apparatus'19965,534,987'Fixing apparatus with variable fixing temperature'19965,444,521'Image fixing device capable of controlling heating overshoot'19955,420,679'Elastic roller and fixing apparatus using same'19955,365,314'Image heating apparatus capable of changing duty ratio'19945,280,155'Image heater having film guide with projections'19945,253,024'Fixing apparatus with rectifier element'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993–2015Patents assigned to CANON KK (21)· patent assignee history
1994Patents assigned to CANON KABUSHIHI KAISHA (1)· patent assignee history
1994–1999Based in Tokyo, JP· patent location history
1997–2006Patents assigned to FUJITSU LTD (4)· patent assignee history
1999–2001Patents assigned to BROTHER IND LTD (4)· patent assignee history
1999–2001Based in Nagoya, JP· patent location history
2000–2003Based in Abiko, JP· patent location history
2016–2017Patents assigned to SANKEN ELECTRIC CO LTD (9)· patent assignee history
2016–2017Based in Niiza, JP· patent location history
2016–2017Based in Fujimino, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CANON KK | 21 | 1993–2015 |
| SANKEN ELECTRIC CO LTD | 9 | 2016–2017 |
| BROTHER IND LTD | 4 | 1999–2001 |
| FUJITSU LTD | 4 | 1997–2006 |
| CANON KABUSHIHI KAISHA | 1 | 1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 9 | 1994–1999 |
| Niiza, JP | 5 | 2016–2017 |
| Fujimino, JP | 4 | 2016–2017 |
| Abiko, JP | 4 | 2000–2003 |
| Nagoya, JP | 4 | 1999–2001 |