Inventor

BERND P. KELLER

Inventor

Overview

4→

Patents

2021–2025

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F21Sprimary

F21SNon-portable lighting devices16%

F21VFunctional features or details of lighting devices or systems thereof16%

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 emitted16%

F21KNon-electric light sources using luminescence12%

G02BOptical elements, systems or apparatus12%

H05BElectric heating12%

A61NElectrotherapy8%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications8%

PatentTitleYear

12,225,643Lighting fixture and methods2025 11,729,877Lighting fixture and methods2023 11,644,157Luminaires using waveguide bodies and optical elements2023 11,209,138Skylight fixture emulating natural exterior light2021

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2021–2023Patents assigned to IDEAL IND LIGHTING LLC (3)· patent assignee history

2021–2025Based in US· patent location history

2025Patents assigned to CREE LIGHTING USA LLC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
IDEAL IND LIGHTING LLC	3	2021–2023
CREE LIGHTING USA LLC	1	2025

Locations

Location	Patents	Span
US	4	2021–2025