(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

PROCESSO PARA REMOÇÃO DE CO2 E QUANDO PRESENTE, H2S DE UMA MISTURA GASOSA

ConcedidaInvention Patent

Application data

Number

PI8203471

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. Allowance02/08/89
  5. Grant08/29/89
  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: 08/29/1989. 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

M. M. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8118288 · 06/15/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

06/06/1989

RPI 972

Deferimento

#9.1

02/08/1989

RPI 955

Conhecimento de parecer técnico

#7.1

08/30/1988

RPI 932

Conhecimento de parecer técnico

#7.1

03/15/1988

RPI 908

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

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.