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Official data from INPI

PROCESSO PARA A FABRICACAO DE ESTIRENO

Em AnáliseInvention Patent

Application data

Number

PI7703000

Type

Invention Patent

Filing

12/29/1976

Publication

-

Progress at the INPI

  1. Filing12/29/76
  2. Publication
  3. Examination
  4. Allowance08/24/82
  5. Grant03/29/83
  6. Terminated12/08/87

The patent was granted on 03/29/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 12/08/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

EXXON RESEARCH ENGINEERING CO

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Inventors

H. I. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/08/1987

RPI 894

Concessão da patente

#16.1

03/29/1983

RPI 649

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

08/24/1982

RPI 618

Exigência - art. 36 da LPI

#6.1

02/09/1982

RPI 590

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