Inventor
Ashfaqul Islam Chowdhury
Inventor
Broadview Heights, OH, US
Overview
Patents· 38 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 elsewhere11%
H01LSemiconductor devices11%
H10HInorganic light-emitting semiconductor devices having potential barriers10%
F21VFunctional features or details of lighting devices or systems thereof9%
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 emitted8%
F21KNon-electric light sources using luminescence8%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h108%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications7%
H05BElectric heating4%
H01JElectric discharge tubes or discharge lamps3%
PatentTitleYear
11,098,246Color stable red-emitting phosphors2021D0916680Headphones2021D0912061Lattice2021D0910389Mounting tool2021D0908621Charger2021D0908620Charger202110,862,009Encapsulant modification in heavily phosphor loaded LED packages for improved stability202010,833,228Enhanced color-preference LED light sources using YAG, nitride, and PFS phosphors202010,495,263LED filament lamps with white filament appearance201910,381,527Enhanced color-preference LED light sources using yag, nitride, and PFS phosphors201910,359,158Lighting selection system and method201910,240,087Enhanced color-preference LED light sources using lag, nitride, and PFS phosphors201910,240,772Lightweight heat sinks and LED lamps employing same20199,974,138Multi-channel lamp system and method with mixed spectrum20189,936,558Lighting selection system and method20189,933,308Method for determining spectrally tuned mixed-color LED light engines20189,929,319'LED package with red-emitting phosphors'20189,698,314'Color stable red-emitting phosphors'20179,676,000'Lighting system with reflective coating having cross-linked polymeric powder and a pigment'20179,680,067'Heavily phosphor loaded LED packages having higher stability'20179,590,148'Encapsulant modification in heavily phosphor loaded LED packages for improved stability'20179,580,648'Color stable red-emitting phosphors'20179,416,952'Lighting apparatus with a light source comprising light emitting diodes'20169,385,282'Color stable red-emitting phosphors'20169,376,615'Color stable red-emitting phosphors'20169,127,816'LED light engine/heat sink assembly'20158,906,724'Color stable red-emitting phosphors'20148,672,516'Lightweight heat sinks and LED lamps employing same'20148,668,356'Lightweight heat sinks and LED lamps employing same'20148,608,347'Lighting apparatus with a light source comprising light emitting diodes'20138,541,933'Transparent thermally conductive polymer composites for light source thermal management'20138,461,754'High efficiency glass halogen lamp with interference coating'2013D0660991'Lamp'20128,179,030'Oxide multilayers for high temperature applications and lamps'20127,759,871'High temperature seal for electric lamp'20107,352,118'Optimized ultraviolet reflecting multi-layer coating for energy efficient lamps'20086,967,443'IR-coated halogen lamp using reflective end coats'20056,462,465'LPCVD coated reflector'2002Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2002–2018Patents assigned to GEN ELECTRIC (12)· patent assignee history
2002–2008Based in Mayfield Heights, OH, US· patent location history
2010–2021Based in Broadview Heights, OH, US· patent location history
2012–2019Patents assigned to GE LIGHTING SOLUTIONS LLC (17)· patent assignee history
2012–2013Patents assigned to CHOWDHURY ASHFAQUL ISLAM (5)· patent assignee history
2013Based in Cleveland, OH, US· patent location history
2014–2019Patents assigned to ALLEN GARY R (4)· patent assignee history
2017–2020Based in East Cleveland, OH, US· patent location history
2021Patents assigned to APPLE INC (5)· patent assignee history
2021Based in San Francisco, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GE LIGHTING SOLUTIONS LLC | 17 | 2012–2019 |
| GEN ELECTRIC | 12 | 2002–2018 |
| APPLE INC | 5 | 2021 |
| CHOWDHURY ASHFAQUL ISLAMself | 5 | 2012–2013 |
| ALLEN GARY R | 4 | 2014–2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Broadview Heights, OH, US | 25 | 2010–2021 |
| San Francisco, California, US | 5 | 2021 |
| East Cleveland, OH, US | 4 | 2017–2020 |
| Mayfield Heights, OH, US | 3 | 2002–2008 |
| Cleveland, OH, US | 1 | 2013 |