Rapid Prototyping Patents

From: ChathamRes@aol.com
Date: Thu May 28 1998 - 15:52:45 EEST


Rapid Prototyping Patents continue to be issued at increasing rates.

The following table shows the number of U.S. patents issued in the technology
area of Rapid Prototyping
and Solid Freeform Fabrication over the period of 1987 to the present:

1986 1
1987 1
1988 2
1989 3
1990 10
1991 22
1992 39
1993 33
1994 18
1995 34
1996 39
1997 53
1998 19

In 1997, the rate of patents issued was more than one per week--with 1998
appearing to be on track for a similar rate.

This rate of one per week appears to be in disagreement with the notion that
nothing new is happening in this field.

For more information on Rapid Prototyping Patents--reply to ChathamRes@aol.com
for information
on 3D Rapid Prototyping Patents 98.1.

Regards
Chatham Research

For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/



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