Inventor

Hiroyuki Matsuyama

Inventor

Tokyo, JP

Overview

1991–2021

Patent span

Chemistry

Primary field (CPC C)

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

Y10Tprimary

Y10TTechnical subjects covered by former us classification14%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form9%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds7%

C04BLime, magnesia5%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients5%

C08LCompositions of macromolecular compounds5%

F16CShafts5%

G01NInvestigating or analysing materials by determining their chemical or physical properties5%

H04NPictorial communication, e.g. television5%

H05KPrinted circuits5%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to POLA CHEM IND INC (4)· patent assignee history

1991–2016Based in Tokyo, JP· patent location history

2013–2017Patents assigned to MATSUYAMA HIROYUKI (4)· patent assignee history

2013–2021Patents assigned to ARISAWA SEISAKUSHO KK (2)· patent assignee history

2014–2016Patents assigned to NIPPON STEEL & SUMIKIN SST (2)· patent assignee history

2014Based in Osaka, JP· patent location history

2016–2017Patents assigned to NIKKATO CORP (2)· patent assignee history

2016Based in Katsuragi, JP· patent location history

2017Based in Nara, JP· patent location history

2021Based in Niigata, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations