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Official data from INPI

PROCESSO PARA A REMOÇÃO DE H2S CO2 DE UMA MISTURA GASOSA, E MISTURAS GASOSAS OBTIDAS

Em AnáliseInvention Patent

Application data

Number

PI8203475

Type

Invention Patent

Filing

06/14/1982

Publication

06/07/1983

Progress at the INPI

  1. Filing06/14/82
  2. Publication06/07/83
  3. Examination08/06/85
  4. Allowance08/08/89
  5. Grant03/20/90
  6. Expired07/01/08

The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

H. P. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8118300 · 06/15/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

12/05/1989

RPI 998

Deferimento

#9.1

08/08/1989

RPI 981

Exigência - art. 36 da LPI

#6.1

01/17/1989

RPI 952

Conhecimento de parecer técnico

#7.1

08/09/1988

RPI 929

6.2

03/24/1987

RPI 857

Solicitação de exame técnico

#4.1

08/06/1985

RPI 772

Publicação do pedido de patente

#3.1

06/07/1983

RPI 659

Pedido de patente depositado

#2.1

08/03/1982

RPI 615

Carta-patente expirada

#21.1

Patente extinta em 14/06/97

07/01/2008

RPI 1956

Concessão da patente

#16.1

03/20/1990

RPI 1010

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