Inventor

Sadaaki Hirai

Inventor
Nagoya, JP

Overview

8→
Patents
1999–2021
Patent span
Performing operations
Primary field (CPC B)

Patents· 8 as inventor

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

B01Dprimary
B01DSeparation15%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general15%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry12%
C04BLime, magnesia12%
Y10TTechnical subjects covered by former us classification12%
B28BShaping clay or other ceramic compositions9%
B22FWorking metallic powder3%
G06FElectric digital data processing3%
G06KGraphical data reading3%
G07GRegistering the receipt of cash, valuables, or tokens3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2010Patents assigned to NGK INSULATORS LTD (7)· patent assignee history
1999–2010Based in Nagoya, JP· patent location history
2021Patents assigned to SEIKO EPSON CORP (1)· patent assignee history
2021Based in Aoki-mura, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NGK INSULATORS LTD71999–2010
SEIKO EPSON CORP12021
Locations
LocationPatentsSpan
Nagoya, JP71999–2010
Aoki-mura, JP12021