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Official data from INPI

PROCESSO PARA PREPARAR UM CATALISADOR ADEQUADO À PRODUÇÃO DE AMÔNIA, E, PROCESSO PARA PRODUZIR AMÔNIA

ConcedidaInvention Patent

Application data

Number

PI8406443

Type

Invention Patent

Filing

03/15/1984

Publication

03/12/1985

Progress at the INPI

  1. Filing03/15/84
  2. Publication03/12/85
  3. Examination08/19/86
  4. Allowance03/14/89
  5. Grant09/26/89
  6. Expired07/08/08

The letters patent expired on 07/08/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The M.W Kellogg Company

US

See this company's full portfolio

Inventors

J. M. (pessoa física)

GB

N. W. (pessoa física)

FR

S. T. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

83 07612 · 03/18/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

07/11/1989

RPI 977

Deferimento

#9.1

03/14/1989

RPI 960

Exigência - art. 36 da LPI

#6.1

09/27/1988

RPI 936

Solicitação de exame técnico

#4.1

08/19/1986

RPI 826

Notificação de entrada na fase nacional - PCT

#1.3

03/12/1985

RPI 751

Carta-patente expirada

#21.1

Patente extinta em 15/03/99

07/08/2008

RPI 1957

Pedido de licença compulsória

#20.1

10/02/1990

RPI 1035

20.4

09/25/1990

RPI 1034

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