Inventor
Takeya Sakai
Inventor
Nagoya, JP
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus21%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein14%
C09KMaterials for miscellaneous applications, not provided for elsewhere11%
B41NPrinting plates or foils7%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds7%
B41JTypewriters4%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles4%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for4%
C04BLime, magnesia4%
G01FMeasuring volume, volume flow, mass flow or liquid level4%
PatentTitleYear
11,115,555Method of producing machine learning model, and copying apparatus202111,104,148Printer202111,068,142Display device and non-transitory computer-readable storage medium storing display control program202110,816,796Display device and optical element20208,902,398'Optical film laminate, method for producing the same, and liquid crystal display panel using the same'20148,724,220'Depolarizing film having an optically anisotropic volumetric region'20147,300,687'Retardation film and process for producing the same'20076,743,487'Retardation film and process for producing the same'20046,696,114'Alignment layer and a liquid crystal display using the same'20046,206,535'Planar lighting device and method of making light guides used therein'20015,296,336'Dampening solution for lithographic printing'19945,244,495'Additive for lithographic dampening solution and use thereof'19934,353,958'Green ceramic tapes and method of producing them'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–1994Based in Wakayama, JP· patent location history
1993–1994Patents assigned to KAO CORP (2)· patent assignee history
1993–1994Patents assigned to TOPPAN PRINTING CO LTD (2)· patent assignee history
1993Based in Tokyo, JP· patent location history
2001–2014Patents assigned to HAYASHI TELEMPU KK (5)· patent assignee history
2001–2020Based in Nagoya, JP· patent location history
2014Patents assigned to SAKAI TAKEYA (2)· patent assignee history
2014Based in Aichi, JP· patent location history
2021Patents assigned to SEIKO EPSON CORP (3)· patent assignee history
2021Based in Nagano, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HAYASHI TELEMPU KK | 5 | 2001–2014 |
| SEIKO EPSON CORP | 3 | 2021 |
| KAO CORP | 2 | 1993–1994 |
| SAKAI TAKEYAself | 2 | 2014 |
| TOPPAN PRINTING CO LTD | 2 | 1993–1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Nagoya, JP | 6 | 2001–2020 |
| Nagano, JP | 3 | 2021 |
| Wakayama, JP | 2 | 1982–1994 |
| Aichi, JP | 1 | 2014 |
| Tokyo, JP | 1 | 1993 |