Inventor
Masakazu Oi
Inventor
Kawasaki, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Mprimary
H04MTelephonic communication20%
B29CShaping or joining of plastics10%
B65BMachines, apparatus or devices for, or methods of, packaging articles or materials10%
G01GWeighing10%
G01MTesting static or dynamic balance of machines or structures10%
G01NInvestigating or analysing materials by determining their chemical or physical properties10%
H03KPulse technique10%
H04LTransmission of digital information, e.g. telegraphic communication10%
H04QSelecting10%
PatentTitleYear
6,778,489'Subscriber terminating equipment'20046,532,260'Pulse transmission device for use in long-distance communication'20036,434,220'Long-distance transmission system and device'20026,320,940'Network termination device with automatic detection and correction of circuit polarity'20015,331,213'Pulse transmission circuit with undershoot eliminating circuitry'19945,038,839'Filling apparatus'19914,125,805'Method and apparatus for defect inspection of liquid-filled insulating container'19783,942,934'Mold assembly for use in packaging machine'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1991Patents assigned to TAKEDA CHEMICAL INDUSTRIES LTD (3)· patent assignee history
1976–1978Based in Osaka, JP· patent location history
1991Based in Toyonaka, JP· patent location history
1994–2004Patents assigned to FUJITSU LTD (5)· patent assignee history
1994–2004Based in Kawasaki, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJITSU LTD | 5 | 1994–2004 |
| TAKEDA CHEMICAL INDUSTRIES LTD | 3 | 1976–1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kawasaki, JP | 5 | 1994–2004 |
| Osaka, JP | 2 | 1976–1978 |
| Toyonaka, JP | 1 | 1991 |