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Official data from INPI

Processo de preparação de anidridos de ácidos carboxílicos por carbonilação de ésteres carboxílicos.

ConcedidaInvention Patent
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Application data

Number

PI8106522

Type

Invention Patent

Filing

10/08/1981

Publication

06/29/1982
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Progress at the INPI

  1. Filing10/08/81
  2. Publication06/29/82
  3. Examination07/24/84
  4. Allowance08/12/86
  5. Grant06/02/87
  6. Terminated11/08/94

The patent was granted on 06/02/1987 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: 06/02/1987. 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

C09B 1/503

Priority claims

FR

80 22088 · 10/09/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/02/1987

RPI 867

Notificação para pagamento de retribuição

#13.1

12/02/1986

RPI 841

Deferimento

#9.1

08/12/1986

RPI 825

Exigência - art. 36 da LPI

#6.1

02/04/1986

RPI 798

Exigência - art. 36 da LPI

#6.1

02/12/1985

RPI 747

Solicitação de exame técnico

#4.1

07/24/1984

RPI 718

Publicação do pedido de patente

#3.1

06/29/1982

RPI 610

Pedido de patente depositado

#2.1

11/24/1981

RPI 579

Anuidade - prazo legal encerrado

#18.2

11/08/1994

RPI 1249

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