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Official data from INPI

PROCESSO E APARELHO APERFEIÇOADOS PARA A PRODUÇÃO DE AMÔNIA.

ConcedidaInvention Patent

Application data

Number

PI8300600

Type

Invention Patent

Filing

02/07/1983

Publication

09/18/1984

Progress at the INPI

  1. Filing02/07/83
  2. Publication09/18/84
  3. Examination01/14/86
  4. Allowance11/08/88
  5. Grant08/29/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

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Inventors

F. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

02/28/1989

RPI 958

Deferimento

#9.1

11/08/1988

RPI 942

Exigência - art. 36 da LPI

#6.1

04/05/1988

RPI 911

6.2

11/18/1986

RPI 839

Solicitação de exame técnico

#4.1

01/14/1986

RPI 795

Publicação do pedido de patente

#3.1

09/18/1984

RPI 726

Pedido de patente depositado

#2.1

03/22/1983

RPI 648

Carta-patente expirada

#21.1

Patente extinta em 07/02/98

07/01/2008

RPI 1956

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