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Inventor

Keiichi Watanabe

Inventor
Tokyo, JP

Overview

17→
Patents
1981–2021
Patent span
Performing operations
Primary field (CPC B)

Patents· 17 as inventor

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

B65Hprimary
B65HHandling thin or filamentary material, e.g. sheets, webs, cables13%
B05BSpraying apparatus8%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein8%
B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general4%
B41JTypewriters4%
B66BElevators4%
C04BLime, magnesia4%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds4%
C08LCompositions of macromolecular compounds4%
C09KMaterials for miscellaneous applications, not provided for elsewhere4%
PatentTitleYear
11,046,880Additive for oil well cement and cement slurry using said additive for oil well cement202111,019,278Image sensor configured by an imaging module installed in a body module and a lens module, and is capable of performing good shading correction202110,989,935Modulation pattern calculation device, light control device, modulation pattern calculation method, modulation pattern calculation program, and storage medium202110,942,418Data creation device, light control device, data creation method, and data creation program20219,193,197'Liquid droplet detecting device, inkjet recording device incorporating same, and liquid droplet detection method'20158,915,775'Exhaust system'20148,777,217'Sheet stacking device and image forming device'20148,079,586'Feed device and image forming apparatus'20118,016,287'Sheet stacking device and image forming device'20117,994,239'Aromatic polycarbonate resin composition and molded article thereof'20117,186,632'Method of fabricating a semiconductor device having a decreased concentration of phosphorus impurities in polysilicon'20075,695,040'Escalator step'19975,459,618'Apparatus for producing a video signal representing an animation'19954,809,178'Obstacle data processing system for unmanned vehicle'19894,548,835'Method for fabricating electrodes for use in lead storage batteries'19854,318,062'Ultrasonic wave nebulizer driving circuit'19824,300,131'Device for indicating an abnormal condition in an ultrasonic nebulizer'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1982Patents assigned to TDK ELECTRONICS CO LTD (2)· patent assignee history
1981–1982Based in Ichikawa, JP· patent location history
1995–2011Based in Chiba, JP· patent location history
2007–2014Based in Tokyo, JP· patent location history
2011–2015Patents assigned to WATANABE KEIICHI (4)· patent assignee history
2011–2014Patents assigned to OKI DATA KK (3)· patent assignee history
2015Patents assigned to AKATSU KAZUHIRO (1)· patent assignee history
2021Patents assigned to HAMAMATSU PHOTONICS KK (2)· patent assignee history
2021Based in Hamamatsu, JP· patent location history
2021Based in Niigata, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
WATANABE KEIICHIself42011–2015
OKI DATA KK32011–2014
HAMAMATSU PHOTONICS KK22021
TDK ELECTRONICS CO LTD21981–1982
AKATSU KAZUHIRO12015
Locations
LocationPatentsSpan
Tokyo, JP42007–2014
Hamamatsu, JP22021
Chiba, JP21995–2011
Ichikawa, JP21981–1982
Niigata, JP12021