Appeal No. 1998-0653 2
Application No. 08/282,278
42 have been allowed.
THE INVENTION
The invention is directed to a naphthopyran compound having a specific formula
and substituents. Other features of the claimed subject matter are set forth in the
following illustrative claim.
THE CLAIM
Claim 1 is illustrative of appellants’ invention
and is reproduced below:
1. A naphthopyran compound represented
by the formula:
wherein,
R4, R5, R6, R7, R8, R9, R10, and R11 are each selected from the group consisting
essentially of hydrogen, a first stable organic radical, a heterocyclic group,
halogen, a first nitrogen-substituted group, and a first nitrogen-substituted
ring group;
A and B are each selected from the group consisting essentially of hydrogen,
substituted phenyl, and substituted naphthyl, provided that at least one
of A or B is substituted phenyl or substituted naphthyl; and
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