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To: ratan lal who wrote (1880)	2/6/2000 9:36:00 PM
From: pompsander	Respond to of 10714

ratan lal: The issue about whether the "use" of a product can be patented may be missing the point. Stated another way, isn't the critical factor that there is a "use need". A company then designs a product which meets that need. They design the product in an innovative way which causes the "need" to be met far more efficiently, more cheaply, etc. If they are so incredibly efficient in designing the process, they then control the "use" because they have totally met (or eliminated) the need. The fact that SiC is conductive and allows certain cheaper, more efficient and space saving design methods to be used which cannot be used on Sapphire is an example of meeting a need through a patented process. Now, if you can find a "use" which can only be economically feasible by a less expensive LED design using a vertically conductive desin, then CREE may end up owning that "use" since no other design (i.e., sapphire) can accomplish the same objective. No to say another SiC design couldn't be better, but then Cree's patents on growing clean SiC crystals protects them there.