Table 2
From the following article
How many patents does a biopharmaceutical company need?
Deepak Kumar Parida, Ritu Mehdiratta & Gayatri Saberwal
Nature Biotechnology 26, 763 - 766 (2008)
doi:10.1038/nbt0708-763
Table 2. The average year of formation versus patent bins of companies formed before 1992
| Patent bins | Number of companies | Average year of formation |
|---|---|---|
Note the difference in interval for the last four bins from all earlier ones. | ||
| 0 | 1 | 1987 |
| 1–10 | 9 | 1988 |
| 11–20 | 8 | 1986 |
| 21–30 | 5 | 1989 |
| 31–40 | 7 | 1986 |
| 41–50 | 3 | 1987 |
| 51–60 | 3 | 1985 |
| 61–70 | 3 | 1985 |
| 71–80 | 0 | 0 |
| 81–90 | 2 | 1991 |
| 91–100 | 0 | 0 |
| 101–300 | 7 | 1985 |
| 301–500 | 1 | 1981 |
| 501–700 | 0 | 0 |
| 701–900 | 1 | 1989 |
| 50 | ||
