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Official data from INPI

NITRACAO CONTINUA DE UM COMPOSTO AROMATICO PELO PROCESSO DO ACIDO MISTO

ConcedidaInvention Patent

Application data

Number

PI8102405

Type

Invention Patent

Filing

04/24/1980

Publication

12/29/1981

Progress at the INPI

  1. Filing04/24/80
  2. Publication12/29/81
  3. Examination08/10/82
  4. Allowance04/16/85
  5. Grant10/01/85
  6. Terminated06/20/95

The patent was granted on 10/01/1985 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: 10/01/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT

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Inventors

M. R. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/01/1985

RPI 780

Republicação - classificação IPC

#15.11

04/23/1985

RPI 757

Deferimento

#9.1

04/16/1985

RPI 756

Exigência - art. 36 da LPI

#6.1

06/19/1984

RPI 713

Pedido de certificado de adição de invenção

#5.1

02/01/1983

RPI 641

Solicitação de exame técnico

#4.1

08/10/1982

RPI 616

Publicação do pedido de patente

#3.1

12/29/1981

RPI 584

Anuidade - prazo legal encerrado

#18.2

06/20/1995

RPI 1281

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