Inventor
William Erwin Cohen
Inventor
Solon, OH, US
Overview
Patents· 25 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 elsewhere28%
H01JElectric discharge tubes or discharge lamps15%
H01LSemiconductor devices9%
H10HInorganic light-emitting semiconductor devices having potential barriers9%
F21KNon-electric light sources using luminescence6%
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 emitted5%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h105%
C09DCoating compositions, e.g. paints, varnishes or lacquers4%
F21VFunctional features or details of lighting devices or systems thereof4%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications4%
PatentTitleYear
11,114,591Core-shell materials with red-emitting phosphors202110,920,938LED apparatus employing neodymium based materials with variable content of fluorine and oxygen202110,851,293Phosphor materials for light sources and method for manufacturing the same202010,619,803LED apparatus employing neodymium based materials with variable content of fluorine and oxygen202010,563,121Red-emitting phosphors and associated devices202010,047,286Color stable red-emitting phosphors20189,890,328'Phosphor compositions and lighting apparatus thereof'20189,633,830'Phosphor-containing coating systems and fluorescent lamps equipped therewith'20179,605,199'Oxy-bromide phosphors and uses thereof'20179,537,061'Phosphor compositions and lighting apparatus thereof'20179,404,034'Coating systems and fluorescent lamps provided therewith'20169,346,999'Method of forming efficient phosphor powders'20169,335,011'Oxyfluoride phosphor compositions and lighting apparatus thereof'20169,328,878'Phosphor compositions and lighting apparatus thereof'20169,321,959'Process of forming phosphor particles with core shell structures'20169,269,559'Compositions and methods for modifying lumen maintenance characteristics of phosphor-containing coatings'20169,142,397'High color rendering index fluorescent lamp with multi-layer phosphor coating'20159,123,525'Phosphor materials, fluorescent lamps provided therewith, and methods therefor'20159,117,650'Fluorescent lamp with high color rendering index and coating systems therefor'20159,018,830'Strontium phosphor blends having high CRI'20158,987,984'Fluorescent lamp including phosphor composition with special BAMn phosphor, (Ba,Sr,Ca)(Mg1-x Mnx)Al10O17:Eu2+'20158,866,372'Phosphor system for improved efficacy lighting sources'20148,704,438'Lamp with phosphor composition for improved lumen performance, and method for making same'20148,446,085'Fluorescent lamp with zinc silicate phosphor and protective phosphor layer'20138,415,869'Fluorescent lamp with underlying yttrium vanadate phosphor layer and protective phosphor layer'2013Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2013–2020Patents assigned to GEN ELECTRIC (21)· patent assignee history
2013–2015Patents assigned to COHEN WILLIAM ERWIN (5)· patent assignee history
2013–2021Based in Solon, OH, US· patent location history
2013–2017Based in Cleveland, OH, US· patent location history
2014–2015Patents assigned to BEERS WILLIAM WINDER (3)· patent assignee history
2014–2015Patents assigned to DU FANGMING (3)· patent assignee history
2020–2021Patents assigned to CURRENT LIGHTING SOLUTIONS LLC (3)· patent assignee history
2020–2021Based in East Cleveland, OH, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GEN ELECTRIC | 21 | 2013–2020 |
| COHEN WILLIAM ERWINself | 5 | 2013–2015 |
| BEERS WILLIAM WINDER | 3 | 2014–2015 |
| CURRENT LIGHTING SOLUTIONS LLC | 3 | 2020–2021 |
| DU FANGMING | 3 | 2014–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Solon, OH, US | 18 | 2013–2021 |
| Cleveland, OH, US | 5 | 2013–2017 |
| East Cleveland, OH, US | 2 | 2020–2021 |