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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE GÁS DE SÍNTESE A PARTIR DE METANOL E GÁS DE SÍNTESE

Em ExigênciaInvention Patent

Application data

Number

PI8504842

Type

Invention Patent

Filing

10/01/1985

Publication

07/22/1986

Progress at the INPI

  1. Filing10/01/85
  2. Publication07/22/86
  3. Examination07/05/88
  4. Allowance04/02/91
  5. Grant10/29/91
  6. Terminated09/19/95

The patent was granted on 10/29/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/13/1989. 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

P. K. (pessoa física)

Technical data

IPC Classification

Priority claims

NL

8403006 · 10/03/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

6.2

06/13/1989

RPI 973

Solicitação de exame técnico

#4.1

07/05/1988

RPI 924

Publicação do pedido de patente

#3.1

07/22/1986

RPI 822

Pedido de patente depositado

#2.1

12/10/1985

RPI 790

Anuidade - prazo legal encerrado

#18.2

09/19/1995

RPI 1294

Concessão da patente

#16.1

10/29/1991

RPI 1091

Notificação para pagamento de retribuição

#13.1

07/16/1991

RPI 1076

Deferimento

#9.1

04/02/1991

RPI 1061

Exigência - art. 36 da LPI

#6.1

10/02/1990

RPI 1035

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