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Official data from INPI

COMPOSICAO DESESPUMADORA CONTENDO ORGANOPOLISSILOXANA, BEM COMO PROCESSO PARA A SUA PREPARACAO

ConcedidaInvention Patent

Application data

Number

PI8102181

Type

Invention Patent

Filing

04/11/1980

Publication

10/13/1981

Progress at the INPI

  1. Filing04/11/80
  2. Publication10/13/81
  3. Examination12/06/83
  4. Allowance10/27/87
  5. Grant05/31/88
  6. Terminated08/30/94

The patent was granted on 05/31/1988 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BAYER AG

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Inventors

M. J. (pessoa física)

M. H. (pessoa física)

S. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

03/01/1988

RPI 906

Deferimento

#9.1

10/27/1987

RPI 888

Conhecimento de parecer técnico

#7.1

09/11/1984

RPI 725

Solicitação de exame técnico

#4.1

12/06/1983

RPI 685

Publicação do pedido de patente

#3.1

10/13/1981

RPI 573

Anuidade - prazo legal encerrado

#18.2

08/30/1994

RPI 1239

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