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Official data from INPI

PROCESSO PARA O CRAQUEAMENTO CATALITICO DE ÓLEOS MINERAIS

ConcedidaInvention Patent

Application data

Number

PI7803074

Type

Invention Patent

Filing

05/15/1978

Publication

-

Progress at the INPI

  1. Filing05/15/78
  2. Publication
  3. Examination
  4. Allowance09/06/88
  5. Grant04/25/89
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 04/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

A. P. (pessoa física)

FR

E. N. (pessoa física)

FR

R. C. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

7715318 · 05/18/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/25/1989

RPI 966

Notificação para pagamento de retribuição

#13.1

12/27/1988

RPI 949

Deferimento

#9.1

09/06/1988

RPI 933

Exigência - art. 36 da LPI

#6.1

03/08/1988

RPI 907

Exigência - art. 36 da LPI

#6.1

04/09/1985

RPI 755

Republicação - classificação IPC

#15.11

01/11/1983

RPI 638

Exigência - art. 36 da LPI

#6.1

11/09/1982

RPI 629

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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