Inventor
Sakae Hayao
Inventor
Chatsworth, CA, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Jprimary
B41JTypewriters50%
B43KImplements for writing or drawing14%
Y10TTechnical subjects covered by former us classification14%
A45DHairdressing or shaving equipment7%
B43LArticles for writing or drawing upon7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
PatentTitleYear
9,994,066Erasing implement and writing implement provided with erasing implement20186,382,862'Application liquid reservoir'20025,980,029'Ink refilling assembly'19995,845,682'Apparatus for refilling an ink cartridge'19985,819,627'Device for making a hole in an ink cartridge'19985,784,086'Ink cartridge holding box for refilling'19985,595,223'Ink refilling assembly'19975,513,747'Ink refill kit'19965,487,615'Ribbon drive assembly for ribbon cartridge'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996Patents assigned to SERCOMP CORP (2)· patent assignee history
1996–1999Based in Chatsworth, CA, US· patent location history
1997–1999Patents assigned to MITSUBISHI PENCIL CORP OF AMER (5)· patent assignee history
2002–2018Patents assigned to MITSUBISHI PENCIL CO (2)· patent assignee history
2002Based in Yokohama, JP· patent location history
2018Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MITSUBISHI PENCIL CORP OF AMER | 5 | 1997–1999 |
| MITSUBISHI PENCIL CO | 2 | 2002–2018 |
| SERCOMP CORP | 2 | 1996 |
Locations
| Location | Patents | Span |
|---|---|---|
| Chatsworth, California, US | 7 | 1996–1999 |
| Tokyo, JP | 1 | 2018 |
| Yokohama, JP | 1 | 2002 |