Inventor
Katsuaki Iwama
Inventor
Suita, JP
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Kprimary
C09KMaterials for miscellaneous applications, not provided for elsewhere18%
H10HInorganic light-emitting semiconductor devices having potential barriers13%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1013%
F21SNon-portable lighting devices11%
F21YIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to the form or the kind of the light sources or of the colour of the light emitted11%
H05BElectric heating11%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications11%
H01JElectric discharge tubes or discharge lamps7%
C03CChemical composition of glasses, glazes or vitreous enamels2%
H01LSemiconductor devices2%
PatentTitleYear
RE047453Luminescent layer and light-emitting semiconductor device20197,772,769'Light-emitting semiconductor device, light-emitting system and method for fabricating light-emitting semiconductor device'20107,629,620'Light-emitting semiconductor device, light-emitting system and method for fabricating light-emitting semiconductor device'20097,592,639'Light-emitting semiconductor device, light-emitting system and method for fabricating light-emitting semiconductor device'20097,422,504'Light-emitting semiconductor device, light-emitting system and method for fabricating light-emitting semiconductor device'20087,294,956'Semiconductor light emitting element and light emitting device using this'20077,170,221'Semiconductor light emitting element and light emitting device using this'20077,023,019'Light-emitting semiconductor device, light-emitting system and method for fabricating light-emitting semiconductor device'20066,528,444'Glass composition, stem and bulb for lamps'20036,445,119'Combined light emitting discharge lamp and luminaire using such lamp'20024,705,986'High color rendering fluorescent lamp'19874,047,069'High-pressure mercury-vapor lamp having a plural phosphor coating'19774,032,812'Fluorescent high-pressure mercury-vapor lamp'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1987Patents assigned to MATSUSHITA ELECTRONICS CORP (3)· patent assignee history
1977–2010Based in Suita, JP· patent location history
1977–2019Based in Osaka, JP· patent location history
2002–2008Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (5)· patent assignee history
2009–2019Patents assigned to PANASONIC CORP (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MATSUSHITA ELECTRIC INDUSTRIAL CO LTD | 5 | 2002–2008 |
| PANASONIC CORP | 4 | 2009–2019 |
| MATSUSHITA ELECTRONICS CORP | 3 | 1977–1987 |
Locations
| Location | Patents | Span |
|---|---|---|
| Suita, JP | 10 | 1977–2010 |
| Osaka, JP | 3 | 1977–2019 |