Inventor
Hajime Koizumi
Inventor
Tokyo, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E04Bprimary
E04BGeneral building constructions33%
E04CStructural elements33%
E04FFinishing work on buildings, e.g. stairs, floors17%
G06FElectric digital data processing17%
PatentTitleYear
6,408,323'Job execution managing apparatus and computer-readable recording medium with program recorded therein for making a computer function as a job execution managing apparatus'20024,522,003'Tiles and arrangement for setting tiles'19854,333,285'Building structure'19824,211,045'Building structure'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–1985Patents assigned to KAJIMA CORP (3)· patent assignee history
1980–1985Based in Tokyo, JP· patent location history
1985Patents assigned to MANTEN KK (1)· patent assignee history
2002Patents assigned to JUSTSYSTEM CORP (1)· patent assignee history
2002Based in Chiba, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KAJIMA CORP | 3 | 1980–1985 |
| JUSTSYSTEM CORP | 1 | 2002 |
| MANTEN KK | 1 | 1985 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 3 | 1980–1985 |
| Chiba, JP | 1 | 2002 |