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Official data from INPI

PROCESSO PARA PREPARAR COMPOSTOS DE CICLOPROPANO

ConcedidaInvention Patent

Application data

Number

PI7804637

Type

Invention Patent

Filing

07/18/1978

Publication

-

Progress at the INPI

  1. Filing07/18/78
  2. Publication
  3. Examination
  4. Allowance08/30/83
  5. Grant03/27/84
  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: 03/27/1984. 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)

NL

Technical data

Priority claims

GB

30470/77 · 07/20/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

12/20/1983

RPI 687

Deferimento

#9.1

08/30/1983

RPI 671

Exigência - art. 36 da LPI

#6.1

02/16/1983

RPI 643

6.2

11/10/1981

RPI 577

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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