Inventor
Kazumasa Hasegawa
Inventor
Nagano, JP
Overview
Patents· 27 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H10Bprimary
H10BElectronic memory devices17%
G11CStatic stores15%
H10DInorganic electric semiconductor devices13%
Y10TTechnical subjects covered by former us classification9%
B41JTypewriters8%
H10NElectric solid-state devices not otherwise provided for7%
B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general4%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein4%
G09GArrangements or circuits for control of indicating devices using static means to present variable information4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
PatentTitleYear
7,244,979'Semiconductor memory device and method for manufacturing the same'20077,184,293'Crosspoint-type ferroelectric memory'20077,173,602'Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer'20077,169,621'Ferroelectric memory device'20076,930,339'Ferroelectric memory and electronic apparatus'20056,930,340'Memory cell array including ferroelectric capacitors, method for making the same, and ferroelectric memory device'20056,913,937'Memory cell array having ferroelectric capacity, method of manufacturing the same and ferroelectric memory device'20056,891,741'Ferroelectric memory device'20056,842,166'Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer'20056,791,863'Ferroelectric memory device and method of manufacturing the same'20046,737,690'Ferroelectronic memory and electronic apparatus'20046,727,536'Ferroelectric memory device'20046,717,837'Ferroelectric memory device and method of operating memory cell including ferroelectric capacitor'20046,690,598'Ferroelectric memory device and method of manufacturing the same'20046,690,599'Ferroelectric memory device'20046,639,823'Ferroelectric memory device and method of driving the same'20036,617,627'Memory cell array having ferroelectric capacitors, method of fabricating the same, and ferroelectric memory device.'20036,455,106'Method of forming oxide-ceramics film'20026,373,461'Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer'20026,345,424'Production method for forming liquid spray head'20026,276,781'Liquid jet recording head and manufacturing method therefor, and liquid jet recording head drive circuit and drive method'20015,933,167'Printer head for ink jet recording'19995,802,686'Process for the preparation of an ink jet printer head'19985,719,607'Liquid jet head'19985,530,465'Liquid spray head and its production method'19964,371,392'Process for refining a molten metal'19834,308,415'Process for refining a molten metal and an apparatus therefor'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981Patents assigned to DAIDO STEEL CO LTD (1)· patent assignee history
1981–1983Based in Tokai, JP· patent location history
1983Patents assigned to DAIDO TOKISHUKO KABUSHIKI KAIS (1)· patent assignee history
1996–2007Patents assigned to SEIKO EPSON CORP (25)· patent assignee history
1996–2004Based in Suwa, JP· patent location history
1998–2007Based in Nagano, JP· patent location history
2003–2007Based in Fujimi-cho, JP· patent location history
2005–2007Based in Fujimi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SEIKO EPSON CORP | 25 | 1996–2007 |
| DAIDO STEEL CO LTD | 1 | 1981 |
| DAIDO TOKISHUKO KABUSHIKI KAIS | 1 | 1983 |
Locations
| Location | Patents | Span |
|---|---|---|
| Nagano, JP | 9 | 1998–2007 |
| Suwa, JP | 7 | 1996–2004 |
| Fujimi-cho, JP | 6 | 2003–2007 |
| Fujimi, JP | 3 | 2005–2007 |
| Tokai, JP | 2 | 1981–1983 |