The objectives of R&D are to develop existing and new core competencies, to further existing and new products, and to develop existing and new business processes through invention and innovation.  The R&D process is the engine that drives product and process differentiation. Innovation is typically defined as the ideas, the products, the services, or processes that are perceived as being new and different and they have been implemented or even commercialized.
Research and development are usually thrown together as one concept, but in reality they are somewhat distinct processes.  Research is typically considered to be science-oriented whereas development is the mechanism for translating the science into commercial products and services. Basic science can be thought of as the engine for pushing new discoveries and ideas into society. This is in contrast to the concept of market pull. Market pull is essentially the process of translating the basic science into products and services in order to satisfy customer needs, wants, and demands. The interaction between science push and market pull creates a very powerful feedback loop that spurs on the development and diffusion of new products and services. 
As noted earlier, the diffusion and awareness of technologies typically follows an S-curve. In the early stages of the S-curve, there are very few people aware of the technology. Market research is not important at this stage because there are few untapped wants because of the lack of awareness. As a technology matures and begins to take off, there is a propagation of awareness with increased insight of the possibilities of a technology.  It is at this stage that market research becomes viable. It is also at this stage that many similar products begin to emerge because of the surfacing of a kind of group aha because of the interconnectedness of businesses and research groups. This group aha occurs because market research by producers and product development laboratories leads to the same conclusions about consumer wants. Once consumers begin to use products and have had the opportunity to experience a product, they also begin to identify areas of deficiencies in the product and areas where a feature might be added. And this is where market research is very effective because market researchers are very adept at identifying changes in consumer wants.
As the market matures, the demand for the products also begins to decline with the emergence of substitute products and technological obsolescence. It is then necessary to re-prime the pump and reload science. This is done by working with new science and new technologies in order to identify new opportunities for developing products and services. The figure below “Push, Pull, and Reload” illustrates the concepts of science push and market pull and how they relate to diffusion and awareness.
Some individuals believe that there is a limit on the ability of innovative activities to bring new products to the market. This suggests that differentiation cannot go on forever. This line of reasoning is similar to the idea attributed to someone in the U.S. patent office that: “Everything that can be invented has been invented.” There is good news, however, from the patent office. Research has shown that companies can keep innovating and still contribute to the bottom line because it appears that, in general, there are no diminishing returns to scale for R&D expenditures.  In essence, continued investment in R&D yields rewards, revenues, and profits. Even though a particular technology may have a performance limit, advances in R&D and in basic science along with customer pull will start the process anew. Moore’s law continues to work for Intel because they continuously re-prime the pump. They have gone from focusing on the clock rate of their CPU, which is constrained by thermodynamic considerations, to exploring multiple CPU cores and restructuring the overall microarchitecture of their chips.
Developing New Products and Services by the Saylor Foundation: Available on http://www.saylor.org/site/textbooks/Developing%20New%20Products%20and%20Services.pdf