LexDanaLexDanabeta
Inventor

Yoshinori Okada

Inventor
Kanagawa, JP

Overview

57→
Patents
1976–2021
Patent span
Physics
Primary field (CPC G)

Patents· 57 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Fprimary
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein16%
G09GArrangements or circuits for control of indicating devices using static means to present variable information13%
G11BInformation storage based on relative movement between record carrier and transducer10%
H04NPictorial communication, e.g. television10%
C09KMaterials for miscellaneous applications, not provided for elsewhere5%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium4%
G11CStatic stores4%
H10DInorganic electric semiconductor devices4%
Y10TTechnical subjects covered by former us classification4%
C07DHeterocyclic compounds3%
PatentTitleYear
10,982,974Magnet, magnet structure, and rotational angle detector202110,626,133Electrochromic compound, electrochromic composition, and display element202010,429,710Electrochromic device201910,093,693Electrochromic compound, electrochromic composition, and display element201810,012,885Electrochromic display device20189,932,522Electrochromic compound, electrochromic composition, display element, and dimming element20189,891,496'Electrochromic display device'20189,829,762Electrochromic display element, display device, information system, and electrochromic dimming lens20179,688,706'Electrochromic compound, electrochromic composition, display element, and dimming element'20179,632,385'Electrochromic display device with intermediate display electrode containing electrically conductive fine particle and a method for manufacturing such device'20179,500,926'Electrochromic display element and image display device'20169,389,480'Method for manufacturing an electrochromic display device and an electrochromic display device having through-hole in display electrode'20169,304,368'Electrochromic device and production method thereof'20169,069,222'Electrochromic display element and display device'20159,041,997'Electro-chromic display element, display apparatus, and driving method'20158,937,758'Electrochromic display device'20158,902,151'Controllable electrochromic display device'20148,754,405'Organic electroluminescence device having anode including metal oxide and conductive polymer, light emission apparatus, and method of fabricating organic electroluminescence device'20148,743,048'Electrochromic display element, display device and information apparatus'20148,736,941'Electrochromic display apparatus and method of manufacturing the same'20148,687,262'Ion conductor and electrochromic display device'20148,665,198'Display driving apparatus for charging a target voltage within a sampling period and a method therefor'20148,525,294'Semiconductor device'20138,203,549'Plasma display panel driving method and plasma display apparatus'20127,710,351'Load drive circuit and display device using the same'20107,598,929'Plasma display apparatus'20097,550,678'Plasma display module'20097,511,441'Semiconductor integrated circuit, drive circuit, and plasma display apparatus'20097,193,403'Current driver'20077,084,839'Pre-drive circuit, capacitive load drive circuit and plasma display apparatus'20067,015,905'Capacitive load driving circuit driving capacitive loads such as pixels in plasma display panels and plasma display apparatus having the capacitive load driving circuit'20066,812,590'Power supply circuit'20046,734,573'Semiconductor memory having access transistors formed in a single well and driver transistors formed in wells different from the single well'20046,670,262'Method of manufacturing semiconductor device'20036,627,960'Semiconductor data storage apparatus'20036,621,234'Plasma display device with alternately arranged sustain electrodes'20036,347,182'Recording/reproducing apparatus including search reproducer controlled by tracking controller so that picture information of a selected type can be normally detected during search reproduction'20026,178,287'Magnetic recording and reproducing system including search reproduction circuit for reproducing an entire screen of one picture channel selected from a plurality of picture channels intermittently recorded on a magnetic tape'20016,078,205'Circuit device, drive circuit, and display apparatus including these components'20005,625,504'Magnetic recording and reproducing system'19975,557,564'Signal terminal structure for macro cells and an associated connection method'19965,490,103'Signal terminal structure for macro cells and an associated connection method'19965,432,648'Magnetic recording and reproducing unit with selection of reproduced image signals'19955,251,074'Method and apparatus for controlling a video signal print system'19935,151,924'Automatic equalization method and apparatus'19924,924,329'Rotary drum apparatus for a magnetic recording and reproducing device'19904,825,299'Magnetic recording/reproducing apparatus utilizing phase comparator'19894,724,407'Integrated filter circuit having switchable selected parallel filter paths'19884,691,246'Apparatus for multiplex recording and reproduction of audio and video signals'19874,672,468'Magnetic recording apparatus with recording of first and second sound signals'19874,667,120'Integrated filter circuit with variable frequency characteristics'19874,634,995'Electronic circuitry utilizing an inerted Darlington amplifier output stage to be operable with a low supply voltage'19874,607,293'Magnetic recording and reproduction system'19864,591,924'Multiplex magnetic recording and reproduction system'19864,338,645'Tape running time indication system'19824,307,326'Drive system for a motor'19813,968,464'Multiple tuning system'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–2012Patents assigned to HITACHI LTD (19)· patent assignee history
1981–1988Based in Katsuta, JP· patent location history
1989–2020Based in Kanagawa, JP· patent location history
1990–2012Based in Yokohama, JP· patent location history
1996–2021Based in Tokyo, JP· patent location history
2003–2013Based in Kawasaki, JP· patent location history
2012–2020Patents assigned to OKADA YOSHINORI (22)· patent assignee history
2014–2020Patents assigned to RICOH CO LTD (19)· patent assignee history
2014–2020Patents assigned to TAKAHASHI HIROYUKI (18)· patent assignee history
2014–2020Patents assigned to YASHIRO TOHRU (18)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
OKADA YOSHINORIself222012–2020
HITACHI LTD191981–2012
RICOH CO LTD192014–2020
TAKAHASHI HIROYUKI182014–2020
YASHIRO TOHRU182014–2020
Locations
LocationPatentsSpan
Kanagawa, JP211989–2020
Yokohama, JP101990–2012
Katsuta, JP91981–1988
Kawasaki, JP72003–2013
Tokyo, JP61996–2021