PatentsRDUS: Dynamic Relation Between Patents and R&d

Description Usage Format Source References

Description

yearly observations of 346 production units

number of observations : 3460

country : United States

economic topic : industrial economics

econometrics topic : count data

Usage

1

Format

A dataframe containing :

cusip

compustat's identifying number for the firm

year

year

ardssic

a two-digit code for the applied R&D industrial classification

scisect

is the firm in the scientific sector ?

capital72

book value of capital in 1972

sumpat

the sum of patents applied for between 1972-1979

rd

R&D spending during the year (in 1972 dollars)

patents

the number of patents applied for during the year that were eventually granted

Source

Hall, Browyn, Zvi Griliches and Jerry Hausman (1986) “Patents and R and D: Is there a Lag?”, International Economic Review, 27, 265-283.

References

http://cameron.econ.ucdavis.edu/racd/racddata.html, chapter 9..


pglm documentation built on Nov. 17, 2017, 6:19 a.m.

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