Inventor
Takamasa Kawakubo
Inventor
Gunma, JP
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C04Bprimary
C04BLime, magnesia28%
G01NInvestigating or analysing materials by determining their chemical or physical properties9%
C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
Y10TTechnical subjects covered by former us classification6%
A61CDentistry3%
A61FFilters implantable into blood vessels3%
A61KPreparations for medical, dental or toiletry purposes3%
A61LMethods or apparatus for sterilising materials or objects in general3%
B43LArticles for writing or drawing upon3%
PatentTitleYear
6,139,989'Cathode formed of graphite/carbon composite for lithium ion secondary battery'20005,391,433'Carbon material for electrodes and process for preparing it'19955,380,422'Micro-electrode and method for preparing it'19955,376,251'Carbon micro-sensor electrode and method for preparing it'19945,281,319'Carbon micro-sensor electrode and method for preparing it'19945,218,757'Tapered carbon microelectrode and process for production thereof'19935,171,492'Process for producing carbonaceous implant material'19925,096,519'Process for preparation of carbon fiber composite reinforced carbonaceous material'19924,950,443'Process for producing carbon product with coarse and dense structure'19904,916,292'Coiled resistance heating element of carbonaceous material'19904,894,215'Process for producing porous materials of carbon'19904,882,102'Process for producing hard carbonaceous sheets'19894,882,103'Process for producing carbon product having coarse and dense structure'19894,863,649'Process for producing carbon heat generator'19894,412,675'Carbon spring and process for preparing the same'19834,374,225'Method of fabricating an eraser'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–2000Patents assigned to MITSUBISHI PENCIL CO (15)· patent assignee history
1983Based in Shinmachi, JP· patent location history
1989–1993Based in Gunma, JP· patent location history
1990–2000Based in Tano-gun, JP· patent location history
1993–1995Patents assigned to AGENCY IND SCIENCE TECHN (4)· patent assignee history
1994–1995Based in Fujioka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MITSUBISHI PENCIL CO | 15 | 1983–2000 |
| AGENCY IND SCIENCE TECHN | 4 | 1993–1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Gunma, JP | 7 | 1989–1993 |
| Tano-gun, JP | 4 | 1990–2000 |
| Fujioka, JP | 3 | 1994–1995 |
| Shinmachi, JP | 2 | 1983 |