Publicação do pedido de patente
#3.1
02/21/1989
RPI 957
Application data
Number
PI8803780Type
Filing
Publication
The letters patent expired on 09/02/2008: 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: 02/21/1989. We update with every new RPI gazette, published weekly.
Applicants
Minnesota Mining and Manufacturing Company
US
Inventors
D. B. (pessoa física)
US
E. W. (pessoa física)
US
W. O. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
02/21/1989
RPI 957
#2.1
01/03/1989
RPI 950
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: G03C 1/94; G03C 1/84; G03C 1/48.
03/27/2018
RPI 2464
#21.1
Patente extinta em 29/07/2003
09/02/2008
RPI 1965
#16.1
12/31/1996
RPI 1361
#13.1
06/25/1996
RPI 1334
#9.1
12/26/1995
RPI 1308
#6.1
06/20/1995
RPI 1281
#6.1
10/04/1994
RPI 1244
#4.1
04/02/1991
RPI 1061
From the same holder
Same category
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