Inventor
Hirotsugu Oishibashi
Inventor
Musashino, JP
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B23Kprimary
B23KSoldering or unsoldering30%
E01BPermanent way30%
B05BSpraying apparatus10%
C23CCoating metallic material10%
G01NInvestigating or analysing materials by determining their chemical or physical properties10%
Y10TTechnical subjects covered by former us classification10%
PatentTitleYear
5,303,514'Rail grinding apparatus'19944,762,263'Small-sized gas pressure welding machine for rails with two separate mechanisms for punching-shearing excess metal'19884,576,324'Gas pressure welding machine'19864,556,164'Method of field welding head-hardened rails'19854,520,756'Build-up spraying apparatus'19854,416,158'Punching-shearing method for inspecting quality of butt welded joint'19834,272,003'Butt welding and burr shearing machine for reinforce steel'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1986Patents assigned to JAPAN NATIONAL RAILWAY (5)· patent assignee history
1981–1986Based in Musashino, JP· patent location history
1983Patents assigned to HAKUSAN SEISSAKU SHO CO LTD (1)· patent assignee history
1985–1988Patents assigned to HAKUSAN SEISAKUSHO KK (3)· patent assignee history
1985Patents assigned to KYUSHU TETSUDO KIKI MFG (2)· patent assignee history
1988–1994Patents assigned to RAILWAY TECHNICAL RES INST (2)· patent assignee history
1988–1994Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| JAPAN NATIONAL RAILWAY | 5 | 1981–1986 |
| HAKUSAN SEISAKUSHO KK | 3 | 1985–1988 |
| KYUSHU TETSUDO KIKI MFG | 2 | 1985 |
| RAILWAY TECHNICAL RES INST | 2 | 1988–1994 |
| HAKUSAN SEISSAKU SHO CO LTD | 1 | 1983 |
Locations
| Location | Patents | Span |
|---|---|---|
| Musashino, JP | 5 | 1981–1986 |
| Tokyo, JP | 2 | 1988–1994 |