PatentsRD | R Documentation |
a panel of 181 observations from 1983 to 1991
number of observations : 1629
observation : production units
country : world
data(PatentsRD)
A dataframe containing :
year
firm's id
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)
geographic area, one of
eu
(European
Union),
japan
,
usa
,
rotw
(rest of the world)
numbers of European patent applications
log of R&D expenditures
log of spillovers
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.
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.
PatentsHGH
,
Index.Source
,
Index.Economics
,
Index.Econometrics
,
Index.Observations
,
Index.Time.Series
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