18.8
11/28/1989
RPI 997
The letters patent expired on 05/03/1994: 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: 11/28/1989. We update with every new RPI gazette, published weekly.
Applicants
WACKER CHEMIE GMBH
Inventors
B. E. (pessoa física)
B. K. (pessoa física)
L. E. (pessoa física)
S. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
11/28/1989
RPI 997
#18.2
08/29/1989
RPI 984
#16.1
11/29/1983
RPI 684
#13.1
09/27/1983
RPI 675
#9.1
05/10/1983
RPI 655
#6.1
11/09/1982
RPI 629
#9.1
10/13/1981
RPI 573
#21.1
05/03/1994
RPI 1222
From the same holder
Same category
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