Inventor
Masami Ohara
Inventor
Akita, JP
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C30Bprimary
C30BSingle-crystal growth31%
G01NInvestigating or analysing materials by determining their chemical or physical properties23%
H01JElectric discharge tubes or discharge lamps23%
F02BInternal-combustion piston engines8%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
9,708,730'Quality-evaluated vitreous silica crucible'20179,653,268'Inspection method of vitreous silica crucible'20179,557,276'Inspection method of vitreous silica crucible'20179,260,795'Closure for silica glass crucible, silica glass crucible and method of handling the same'20165,195,481'Two-cycle engine with separate lubricating system'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993Patents assigned to SANSHIN KOGYO KK (1)· patent assignee history
1993Based in Hamamatsu, JP· patent location history
2016Patents assigned to JAPAN SUPER QUARTZ CORP (1)· patent assignee history
2016Patents assigned to OHARA MASAMI (1)· patent assignee history
2016Patents assigned to SATO MASARU (1)· patent assignee history
2016–2017Based in Akita, JP· patent location history
2017Patents assigned to SUMCO CORP (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUMCO CORP | 3 | 2017 |
| JAPAN SUPER QUARTZ CORP | 1 | 2016 |
| OHARA MASAMIself | 1 | 2016 |
| SANSHIN KOGYO KK | 1 | 1993 |
| SATO MASARU | 1 | 2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Akita, JP | 4 | 2016–2017 |
| Hamamatsu, JP | 1 | 1993 |