Pedido de certificado de adição de invenção
#5.1
12/01/1987
RPI 893
Application data
Number
PI8501273Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 12/01/1987. We update with every new RPI gazette, published weekly.
Applicants
Exxon Research And Engineering Company
US
Inventors
K. L. (pessoa física)
GB
Publications in the Brazilian Industrial Property Gazette (RPI).
#5.1
12/01/1987
RPI 893
#4.1
10/06/1987
RPI 885
#3.1
11/19/1985
RPI 787
#2.1
06/11/1985
RPI 764
#21.1
Patente extinta em 21/03/2000
07/15/2008
RPI 1958
#16.1
10/29/1991
RPI 1091
#13.1
07/16/1991
RPI 1076
#9.1
04/02/1991
RPI 1061
#6.1
10/09/1990
RPI 1036
#6.1
04/24/1990
RPI 1015
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.