patentsrd dataset

Patents and R&D

Panel data on patents and R&D expenditures. The sample includes 346 firms with five years of data from 1975 to 1979 used by Hall, Griliches, and Hausman (1986). data

Format

A data frame with 346 observations and 25 variables:

• cusip: Compustat's identifying number for the firm (Committee on Uniform Security Identification Procedures number).
• ardssic: A two-digit code for the applied R&D industrial classification.
• scisect: = 1 if firm is in the scientific sector.
• logk: log of the book value of capital in 1972.
• sumpat: sum of patents applied for between 1972-1979.
• logr70: log of R&D spending in 1970, in 1972 dollars.
• logr71: log of R&D spending in 1971, in 1972 dollars.
• logr72: log of R&D spending in 1972, in 1972 dollars.
• logr73: log of R&D spending in 1973, in 1972 dollars.
• logr74: log of R&D spending in 1974, in 1972 dollars.
• logr75: log of R&D spending in 1975, in 1972 dollars.
• logr76: log of R&D spending in 1976, in 1972 dollars.
• logr77: log of R&D spending in 1977, in 1972 dollars.
• logr78: log of R&D spending in 1978, in 1972 dollars.
• logr79: log of R&D spending in 1979, in 1972 dollars.
• pat70: number of patents applied in the year that were eventually granted (1970).
• pat71: number of patents applied in the year that were eventually granted (1971).
• pat72: number of patents applied in the year that were eventually granted (1972).
• pat73: number of patents applied in the year that were eventually granted (1973).
• pat74: number of patents applied in the year that were eventually granted (1974).
• pat75: number of patents applied in the year that were eventually granted (1975).
• pat76: number of patents applied in the year that were eventually granted (1976).
• pat77: number of patents applied in the year that were eventually granted (1977).
• pat78: number of patents applied in the year that were eventually granted (1978).
• pat79: number of patents applied in the year that were eventually granted (1979).

Source

http://cameron.econ.ucdavis.edu/mmabook/mmadata.html

patentsrd

Section in Text

23.3 Nonlinear Panel Example: Patents and R&D, pp. 792-5

Examples

summary(patentsrd)

References

Cameron, A. and Trivedi, P. (2005), "Microeconometrics: Methods and Applications," Cambridge University Press, New York.

Hall, B., Griliches, Z. and Hausman J. (1986), "Patents and R and D: Is There a Lag?," International Economic Review, 27, issue 2, p. 265-83.