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Official data from INPI

PROCESSO DE PREPARAÇÃO DE GÁS DE SÍNTESE DE AMÔNIA.

ConcedidaInvention Patent

Application data

Number

PI8304939

Type

Invention Patent

Filing

09/12/1983

Publication

04/24/1984

Progress at the INPI

  1. Filing09/12/83
  2. Publication04/24/84
  3. Examination09/25/84
  4. Allowance01/10/89
  5. Grant09/26/89
  6. Terminated05/02/95

The patent was granted on 09/26/1989 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: 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

B. M. (pessoa física)

US

C. D. (pessoa física)

US

J. C. (pessoa física)

US

P. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

417.718 · 09/13/1982

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

05/30/1989

RPI 971

Deferimento

#9.1

01/10/1989

RPI 951

Conhecimento de parecer técnico

#7.1

03/01/1988

RPI 906

Exigência - art. 36 da LPI

#6.1

09/03/1985

RPI 776

Solicitação de exame técnico

#4.1

09/25/1984

RPI 727

Publicação do pedido de patente

#3.1

04/24/1984

RPI 705

Pedido de patente depositado

#2.1

11/08/1983

RPI 681

Anuidade - prazo legal encerrado

#18.2

05/02/1995

RPI 1274

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