18.8
08/23/1988
RPI 931
The letters patent expired on 11/15/1994: 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: 08/23/1988. We update with every new RPI gazette, published weekly.
Applicants
UKON MASAO [BR]
Inventors
U. [. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/23/1988
RPI 931
#18.2
07/12/1988
RPI 925
#16.1
03/25/1986
RPI 805
#13.1
12/17/1985
RPI 791
#9.1
08/13/1985
RPI 773
#15.11
07/02/1985
RPI 767
#6.1
03/19/1985
RPI 752
#4.1
04/19/1983
RPI 652
#3.2
02/01/1983
RPI 641
#2.1
10/26/1982
RPI 627
#21.1
11/15/1994
RPI 1250
Same category
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