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Official data from INPI

PROCESSO PARA PREPARACAO DE CIANETO DE TRIMETILSILILA

ConcedidaInvention Patent

Application data

Number

PI8103021

Type

Invention Patent

Filing

05/16/1980

Publication

02/09/1982

Progress at the INPI

  1. Filing05/16/80
  2. Publication02/09/82
  3. Examination04/03/84
  4. Allowance07/09/85
  5. Grant02/04/86
  6. Terminated06/20/95

The patent was granted on 02/04/1986 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: 02/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BAYER AG

See this company's full portfolio

Inventors

F. K. (pessoa física)

L. K. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/04/1986

RPI 798

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Solicitação de exame técnico

#4.1

04/03/1984

RPI 702

Publicação do pedido de patente

#3.1

02/09/1982

RPI 590

Anuidade - prazo legal encerrado

#18.2

06/20/1995

RPI 1281

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