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Official data from INPI

PROCESSO PARA A PREPARAÇÀO DE HIDROCARBONETOS.

Em AnáliseInvention Patent

Application data

Number

PI8405802

Type

Invention Patent

Filing

11/13/1984

Publication

09/17/1985

Progress at the INPI

  1. Filing11/13/84
  2. Publication09/17/85
  3. Examination08/25/87
  4. Allowance02/13/91
  5. Grant09/24/91
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 01/12/1988. 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

J. S. (pessoa física)

Technical data

Priority claims

NL

8303909 · 11/15/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de certificado de adição de invenção

#5.1

01/12/1988

RPI 899

Solicitação de exame técnico

#4.1

08/25/1987

RPI 879

Publicação do pedido de patente

#3.1

09/17/1985

RPI 778

Pedido de patente depositado

#2.1

01/29/1985

RPI 745

Carta-patente expirada

#21.1

Patente extinta em 13/11/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

09/24/1991

RPI 1086

Republicação - classificação IPC

#15.11

07/09/1991

RPI 1075

Notificação para pagamento de retribuição

#13.1

05/28/1991

RPI 1069

Deferimento

#9.1

02/13/1991

RPI 1054

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