*patpan85.doc
Last update Nov. 20, 1994
Bronwyn H. Hall
*==============================================================
;
*
This documentation is actually a SAS program that reads the
*
data file for the old patents data set. This dataset was
*
matched to the 1985 Compustat panel (aka the R&D masterfile).
*
Note that coverage of patents only goes through 1981 at the
*
latest, and that applications are not complete for a couple
*
of years before that.
;
options ls=80 ;
*
*
======= patpan85.sas =======
*
*
Patents from 1985 panel.
*
Here are the variables:
*
*
ncusip
The cusip id for the firm, in numeric format.
*
year
The two-digit year of the data.
*
sic
4-digit SIC for this firm.
*
patents
The number of applications this year that were ultimately
*
granted.
*
patentsg The number of grants THIS year.
*
forpats
The number of applications by foreign subsidiaries of
*
this firm.
*
forpatsg The number of grants to foreign subsidiaties of this firm.
*
*
Bronwyn H. Hall
May 1, 1993
;
data patpan85 ;
infile "patpan85.dat" ;
input (ncusip year sic
patents patentsg forpats forpatsg)
(10.0 2*5.0 +2 4*7.0) ;