Inventor
Tsuyoshi Hayakawa
Inventor
Tokyo, JP
Overview
Patents· 22 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Jprimary
B41JTypewriters16%
G01NInvestigating or analysing materials by determining their chemical or physical properties16%
B23KSoldering or unsoldering12%
G03GElectrography8%
Y10TTechnical subjects covered by former us classification8%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables4%
G01TMeasurement of nuclear or x-radiation4%
G01VGeophysics4%
G04BMechanically-driven clocks or watches4%
G04GElectronic time-pieces4%
PatentTitleYear
10,948,850Powder container and image forming apparatus202110,908,531Powder container, powder supply device and image forming apparatus202110,160,056Arc welding equipment201810,035,213Welding method and welding apparatus20189,061,364'TIG welding method and apparatus'20155,637,874'Apparatus and method for measuring chemiluminescence'19975,581,288'Ink jet head block'19965,534,903'Ink jet head'19965,523,845'A fiber optic device for measuring liquids which are drawn into an end of the device to a predetermined distance from the end of the optical fibers'19965,397,537'Test instrument'19955,344,245'Serial printer'19945,336,004'Dot printer'19945,260,029'Fluorescence detection of DNA bases'1993D0333105'Clock movement'1993D0328136'Blood sugar strip'19925,105,398'Three hands type clock with belt drive'19924,912,737'X-ray image observing device'1990D0303228'Clock movement'1989D0303227'Clock movement'19894,862,004'Radiation dose measuring method and apparatus with nuclide discrimination function'19894,796,239'Circuit unit for timepiece and process for fabricating the same'19894,745,682'Method of connecting coil'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–1996Patents assigned to SEIKOSHA KK (9)· patent assignee history
1988–1994Based in Tokyo, JP· patent location history
1989–1993Patents assigned to HAMAMATSU PHOTONICS KK (3)· patent assignee history
1990–1997Based in Hamamatsu, JP· patent location history
1992–1995Based in Yamanashi, JP· patent location history
1994–1996Based in Chiba, JP· patent location history
1996–1997Patents assigned to BIO SENSOR KENKYUSHO KK (2)· patent assignee history
2015–2018Patents assigned to DENSO CORP (3)· patent assignee history
2015–2018Patents assigned to HAYAKAWA TSUYOSHI (2)· patent assignee history
2015–2018Based in Hekinan, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SEIKOSHA KK | 9 | 1988–1996 |
| DENSO CORP | 3 | 2015–2018 |
| HAMAMATSU PHOTONICS KK | 3 | 1989–1993 |
| BIO SENSOR KENKYUSHO KK | 2 | 1996–1997 |
| HAYAKAWA TSUYOSHIself | 2 | 2015–2018 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 7 | 1988–1994 |
| Hamamatsu, JP | 4 | 1990–1997 |
| Chiba, JP | 3 | 1994–1996 |
| Hekinan, JP | 2 | 2015–2018 |
| Yamanashi, JP | 2 | 1992–1995 |