The Dec.2007 issue of Spectrum (a monthly published by IEEE) has this article http://spectrum.ieee.org/dec07/5742 related to R&D spending of various firms for the year 2006. Toyota tops the list for 2006. The R&D spending is shown in different formats ie absolute expenditure, R&D Intensity(relative to size of the firm in terms of sales) and R&D Expenditure per employee. It points out that not all R&D investments can be compared directly as some firms have to spend more than the others just to stay alive like the pharmaceutical. But still puzzling is that Apple or Google which are considered to be the best innovation firms hardly make into the list in any format. Even the effectiveness of R&D in terms of patents applied don´t seem to explain innovation. So the conclusion is that the only wisdom in R&D matters and which is not yet a column in the comparisons.
This research does not contain any emerging economy like China, India, Brazil and so on. Even Australia seems to have been not included(or may be no organisation in Australia made into the list). It would be interesting to know what approach the mega merger companies from the emerging economies like Tatas will have to do it to grow considering that the R&D capabilities are so poor in these countries (particularly India). Would they have their R&D section located in India or in US or Europe (which is lagging but is aware of its shortcoming).
What would be interesting is to know where is the research and development going on , in these firms. For example what share of the R&D of Toyota is spent in Japan and what share in US. Many companies are using the emerging economies as the base for such activities particularly IT related developments in India. In short, it would be interesting to know the country-wise breakup also of this R&D expenditure.