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Official data from INPI

Processo de preparação do anidrido acético.

ConcedidaInvention Patent

Application data

Number

PI8108368

Type

Invention Patent

Filing

12/23/1981

Publication

10/13/1982

Progress at the INPI

  1. Filing12/23/81
  2. Publication10/13/82
  3. Examination10/30/84
  4. Allowance07/08/86
  5. Grant02/03/87
  6. Terminated02/04/92

The patent was granted on 02/03/1987 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: 02/03/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhone-Poulenc Industries

FR

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Inventors

G. J. (pessoa física)

P. R. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

80 27941 · 12/24/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/03/1987

RPI 850

Notificação para pagamento de retribuição

#13.1

11/04/1986

RPI 837

Deferimento

#9.1

07/08/1986

RPI 820

Exigência - art. 36 da LPI

#6.1

07/16/1985

RPI 769

Solicitação de exame técnico

#4.1

10/30/1984

RPI 732

Publicação do pedido de patente

#3.1

10/13/1982

RPI 625

Pedido de patente depositado

#2.1

02/16/1982

RPI 591

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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