"developed concept" is correct and usable in written English.
It is often used in academic writing to refer to a concept that has been formally researched and explained. For example, "This paper will explore the developed concept of organizational culture."
Ceramic-based nanocomposites were reviewed, emphasizing the newly developed concept of material design for ceramics.
In this article I shall present one recently developed concept called the "decision tree," which has tremendous potential as a decision-making tool.
For his 2009 blockbuster film, director James Cameron wanted his alien race, the Na'vi, to be a fully developed concept, complete with their own working language.
Tom Gleeson and colleagues estimate the true scale of the problem using a newly developed concept called the 'groundwater footprint' — defined as the area required to sustain groundwater use and groundwater-dependent ecosystem services.
Using the newly developed concept that RR Lyrae variable stars accurately reveal their distance by their period of variation and apparent brightness, he found that the clusters were distributed roughly in a sphere whose centre lay in Sagittarius.
The newly developed concept of MILD combustion has paved the way through achievement of high thermal efficiencies with low levels of pollutants and greenhouse gases.
Furthermore numerical simulations of the gas and slag flow were used to predict the operational behavior of the newly developed concept.
The newly developed concept of SSC could be utilized to design solar absorbers with high thermal efficiency for future high temperature CSP systems.
Strategies to design the fibre trajectories in laminates have included aligning the fibres with principal stress vectors and a newly developed concept of load paths.
