Inventor

Johann Fritz Karkheck

Inventor

Petaluma, CA, US

Overview

16→

Patents

2016–2021

Patent span

Electricity

Primary field (CPC H)

Patents· 16 as inventor

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

H02Sprimary

H02SGeneration of electric power by conversion of infrared radiation, visible light or ultraviolet light, e.g. using photovoltaic [pv] modules18%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution18%

F24SSolar heat collectors13%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications10%

E04DRoof coverings8%

E02DFoundations4%

F24FAir-conditioning4%

H01LSemiconductor devices4%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation4%

LOC233%

PatentTitleYear

11,015,635Threaded truss foundations and related systems, methods, and machines2021 10,837,677Multi-piece truss legs and related couplers2020 10,812,012Hinging inverted seam module mounting system2020 10,742,165Bypass mechanisms for energy generation systems2020 10,720,877Photovoltaic mounting system for solar tracker array2020 10,615,739Optimized truss foundations, adapters for optimized truss foundations, and related systems and methods2020 10,547,270Building integrated photovoltaic roofing assemblies and associated systems and methods2020 10,505,495PV tile mounting system2019 10,505,493Building integrated photovoltaic tile mounting system2019 10,323,418Vent cover assembly for use with roof-mounted photovoltaic systems2019 10,097,134Pile cap with integrated bearing housing2018 10,063,185Retractable wiring system for a photovoltaic module2018 9,879,430'Replacement flashing for exhaust gas vents beneath roof-mounted photovoltaic systems'2018 9,869,095'Exhaust gas panel vent assembly for roof-mounted photovoltaic systems'2018 D0792961'Vent'2017 D0773029'Vent'2016

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2016–2020Patents assigned to SOLARCITY CORP (11)· patent assignee history

2016–2019Based in San Rafael, CA, US· patent location history

2018–2021Based in Petaluma, CA, US· patent location history

2018Based in San Bernardino, CA, US· patent location history

2019–2020Patents assigned to TESLA INC (3)· patent assignee history

2020–2021Patents assigned to OJJO INC (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SOLARCITY CORP	11	2016–2020
OJJO INC	3	2020–2021
TESLA INC	3	2019–2020

Locations

Location	Patents	Span
Petaluma, California, US	10	2018–2021
San Rafael, California, US	5	2016–2019
San Bernardino, California, US	1	2018