Concessão da patente
#16.1
06/24/1986
RPI 818
Application data
Number
PI8101637Type
Filing
Publication
The patent was granted on 06/24/1986 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 06/24/1986. We update with every new RPI gazette, published weekly.
Applicants
KOPPERS CO INC
Inventors
B. D. (pessoa física)
E. W. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
06/24/1986
RPI 818
#9.1
10/22/1985
RPI 783
#6.1
01/08/1985
RPI 742
#4.1
05/18/1982
RPI 604
#3.1
01/12/1982
RPI 586
#18.2
09/25/1990
RPI 1034
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.