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Official data from INPI

PROCESSO DE PRODUCAO DE ANIDRIDO MALEICO,PELA OXIDACAO DE HIDROCARBONETOS DE QUATRO CARBONOS

Em AnáliseInvention Patent

Application data

Number

PI7802106

Type

Invention Patent

Filing

04/04/1977

Publication

-

Progress at the INPI

  1. Filing04/04/77
  2. Publication
  3. Examination
  4. Allowance07/19/83
  5. Grant03/27/84
  6. Terminated10/03/89

The patent was granted on 03/27/1984 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: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

STANDARD OIL CO

See this company's full portfolio

Inventors

B. N. (pessoa física)

M. E. (pessoa física)

W. E. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/03/1989

RPI 989

16.3

06/19/1984

RPI 713

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

11/16/1983

RPI 682

Deferimento

#9.1

07/19/1983

RPI 665

Exigência - art. 36 da LPI

#6.1

10/19/1982

RPI 626

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