Concessão da patente
#16.1
12/27/1988
RPI 949
Application data
Number
PI8205256Type
Filing
Publication
The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 12/27/1988. We update with every new RPI gazette, published weekly.
Applicants
PPG INDUSTRIES INC [US]
Inventors
J. B. (pessoa física)
US
M. W. (pessoa física)
US
IPC Classification
Priority claims
US
301.712 · 09/14/1981
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