Concessão da patente
#16.1
07/25/1989
RPI 979
Application data
Number
PI8102719Type
Filing
Publication
The patent was granted on 07/25/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 07/25/1989. We update with every new RPI gazette, published weekly.
Applicants
NL INDUSTRIES INC
Inventors
H. L. (pessoa física)
H. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
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