Deferimento
#9.1
09/19/1989
RPI 987
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Official data from INPI
PROCESSO PARA A RECUPERAÇÃO DE HIDROCARBONETOS C4 + USANDO UM DEFLEGMADOR
DeferidaInvention Patent
Application data
Number
PI8401828Type
Invention Patent
Filing
04/18/1984
Publication
11/27/1984
Progress at the INPI
- Filing04/18/84
- Publication11/27/84
- Examination03/19/85
- Allowance09/19/89
- Grant03/20/90
- Terminated06/06/95
The patent was granted on 03/20/1990 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: 09/19/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
Air Products And Chemicals, Inc.
US
Inventors
D. B. (pessoa física)
US
H. R. (pessoa física)
US
R. T. (pessoa física)
US
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
6.2
08/02/1988
RPI 928
Solicitação de exame técnico
#4.1
03/19/1985
RPI 752
Publicação do pedido de patente
#3.1
11/27/1984
RPI 736
Pedido de patente depositado
#2.1
06/26/1984
RPI 714
Anuidade - prazo legal encerrado
#18.2
06/06/1995
RPI 1279
Republicação - classificação IPC
#15.11
08/06/1991
RPI 1079
Concessão da patente
#16.1
03/20/1990
RPI 1010
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