20.4
08/22/1989
RPI 983
Application data
Number
PI8300635Type
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: 08/22/1989. We update with every new RPI gazette, published weekly.
Applicants
W.R Grace & Co. Conn
US
Inventors
M. B. (pessoa física)
Publications in the Brazilian Industrial Property Gazette (RPI).
08/22/1989
RPI 983
#16.1
07/26/1988
RPI 927
#13.1
05/10/1988
RPI 916
#9.1
12/29/1987
RPI 897
#15.11
04/22/1987
RPI 861
#6.1
11/18/1986
RPI 839
#4.1
08/20/1985
RPI 774
#3.1
11/08/1983
RPI 681
#2.1
03/29/1983
RPI 649
#21.1
Patente extinta em 09/02/98
07/01/2008
RPI 1956
Same category
Patent monitoring
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