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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UMA MISTURA DE HIDROCARBONETOS E A MISTURA ASSIM PREPARADA

ConcedidaInvention Patent

Application data

Number

PI8101943

Type

Invention Patent

Filing

03/31/1981

Publication

10/06/1981

Progress at the INPI

  1. Filing03/31/81
  2. Publication10/06/81
  3. Examination11/16/83
  4. Allowance09/10/85
  5. Grant04/29/86
  6. Terminated02/04/92

The patent was granted on 04/29/1986 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: 04/29/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SHELL INT RESEARCH [NL]

Inventors

B. M. (pessoa física)

S. S. (pessoa física)

Technical data

IPC Classification

Priority claims

NL

8001935 · 04/02/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/29/1986

RPI 810

Notificação para pagamento de retribuição

#13.1

01/14/1986

RPI 795

Deferimento

#9.1

09/10/1985

RPI 777

Exigência - art. 36 da LPI

#6.1

10/23/1984

RPI 731

Solicitação de exame técnico

#4.1

11/16/1983

RPI 682

Publicação do pedido de patente

#3.1

10/06/1981

RPI 572

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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