LexDanaLexDanabeta
Inventor

Takao Okumura

Inventor
Tokyo, JP

Overview

4→
Patents
1990–1992
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 4 as inventor

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

E04Fprimary
E04FFinishing work on buildings, e.g. stairs, floors80%
H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines20%
PatentTitleYear
5,162,612'Closure plate for covering opening of floor panels'19925,072,557'Device for fixing floor panels'19914,996,804'Device and structure for supporting floor panels'19914,922,670'Free access floor and method of constructing the same'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990Patents assigned to NAKA TECHNICAL LAB (1)· patent assignee history
1990Based in Saitama, JP· patent location history
1991–1992Patents assigned to NAKA CORP (3)· patent assignee history
1991–1992Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NAKA CORP31991–1992
NAKA TECHNICAL LAB11990
Locations
LocationPatentsSpan
Tokyo, JP31991–1992
Saitama, JP11990