| PatentsRD {Ecdat} | R Documentation |
Patents, R&D and Technological Spillovers for a Panel of Firms
Description
a panel of 181 observations from 1983 to 1991
number of observations : 1629
observation : production units
country : world
Usage
data(PatentsRD)Format
A dataframe containing :
- year
year
- fi
firm's id
- sector
-
firm's main industry sector, one of
aero(aerospace),chem(chemistry),comput(computer),drugs,elec(electricity),food,fuel(fuel and mining),glass,instr(instruments),machin(machinery),metals,other,paper,soft(software),motor(motor vehicles) - geo
-
geographic area, one of
eu(European Union),japan,usa,rotw(rest of the world) - patent
-
numbers of European patent applications
- rdexp
log of R&D expenditures
- spil
log of spillovers
Source
Cincer, Michele (1997) “Patents, R & D and technological spillovers at the firm level : some evidence from econometric count models for panel data”, Journal of Applied Econometrics, 12(3), May–June, 265–280.
References
Journal of Applied Econometrics data archive : http://qed.econ.queensu.ca/jae/. Verbeek, Marno (2004) A Guide to Modern Econometrics, John Wiley and Sons, chapter 7.
See Also
PatentsHGH,
Index.Source,
Index.Economics,
Index.Econometrics,
Index.Observations,
Index.Time.Series