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Official data from INPI

PROCESSO PARA A SEPARACAO E PURIFICACAO DE BUTADIENO OU ISOPRENO

ConcedidaInvention Patent

Application data

Number

PI8105109

Type

Invention Patent

Filing

09/18/1980

Publication

04/27/1982

Progress at the INPI

  1. Filing09/18/80
  2. Publication04/27/82
  3. Examination08/10/82
  4. Allowance05/22/84
  5. Grant11/27/84
  6. Terminated08/07/90

The patent was granted on 11/27/1984 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: 11/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

JAPAN SYNTHETIC RUBBER CO LTD

Inventors

K. N. (pessoa física)

M. A. (pessoa física)

T. O. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/27/1984

RPI 736

Notificação para pagamento de retribuição

#13.1

09/04/1984

RPI 724

Deferimento

#9.1

05/22/1984

RPI 709

Solicitação de exame técnico

#4.1

08/10/1982

RPI 616

Publicação do pedido de patente

#3.1

04/27/1982

RPI 601

Anuidade - prazo legal encerrado

#18.2

08/07/1990

RPI 1027

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