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Official data from INPI

PROCESSO PARA A POLIMERIZAÇÃO ESTEREOSPECÍFICA DE UMA ALFA-OLEFINA, POLÍMERO PRODUZIDO PELO PROCESSO E SISTEMA CATALISADOR DE POLIMERIZAÇÃO OLEFÍNICA

ConcedidaInvention Patent

Application data

Number

PI8003556

Type

Invention Patent

Filing

06/09/1980

Publication

-

Progress at the INPI

  1. Filing06/09/80
  2. Publication
  3. Examination03/29/83
  4. Allowance11/13/84
  5. Grant05/28/85
  6. Terminated07/26/94

The patent was granted on 05/28/1985 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: 05/28/1985. 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

G. B. (pessoa física)

V. W. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

7920181 · 06/11/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

03/26/1985

RPI 753

Deferimento

#9.1

11/13/1984

RPI 734

Exigência - art. 36 da LPI

#6.1

02/07/1984

RPI 694

Pedido de certificado de adição de invenção

#5.1

08/23/1983

RPI 670

Solicitação de exame técnico

#4.1

03/29/1983

RPI 649

Anuidade - prazo legal encerrado

#18.2

07/26/1994

RPI 1234

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