It's back to Scirus to see trends in publications and patents regarding prions.
Prions are infectious agents composed only of proteins, and are implicated in BSE (bovine spongiform encephalopathy, AKA mad cow disease) and Creutzfeldt-Jakob Disease (CJD) which as far as I can tell is more or less a human equivalent.
Prions were hypothesized in the 60s and actually found in the 80s, winning a Nobel prize for the disoverer, Stanley Prusiner.
The human disease is quite rare. Mad cow disease is not. Both are fatal. There is a public good to be pursued in preventing CJD and private profit in preventing mad cow disease. The two together should stimulate research. With a short timeline to look at, it will be interesting to see if human knowledge doubles every five years.
Scirus returns 13,518 journal publications with 'prion' in the title, abstract or text, and 8,781 patents. Because there is a bird called the fairy prion (Pachyptila turtur), I will actually have to look at the results... darn.
We hereby proclaim a base year of 1981, when 5 journal articles and no patents were published. That gives us a CAGR (compound annual growth rate) of 25.57% and we have another winner! Human knowledge has doubled every 5 years regarding prions! And patents have grown even more rapidly, at 33.76%--huzzah!
However, as we have seen elsewhere, a note of caution--while patent growth has consistently exhibited hypergrowth characteristics, journal publications have leveled off, with the period 2002-2006 growing 'only' 66% over the preceding five-year period.
Click below to see the results.
Here are the five year totals:
Year Journals Patents
2002-2006 6,390 6,771
1997-2001 4,246 1,468
1992-1996 1,703 135
1987-1991 383 42
1982-1986 118 11
Here are the annual totals:
Year Journals Patents
2007 481 265
2006 1,482 1,438
2005 1,337 1,416
2004 1,382 1,477
2003 1,087 1,356
2002 1,102 1,084
2001 1,049 719
2000 938 319
1999 714 206
1998 706 149
1997 839 75
1996 653 54
1995 388 24
1994 322 26
1993 202 23
1992 138 8
1991 104 15
1990 81 7
1989 92 13
1988 51 2
1987 55 5
1986 37 4
1985 39 0
1984 20 0
1983 15 0
1982 7 0
1981 5 0
1980 0 0
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