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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8204851

Type

Invention Patent

Filing

08/19/1982

Publication

11/30/1982

Progress at the INPI

  1. Filing08/19/82
  2. Publication11/30/82
  3. Examination06/14/83
  4. Allowance12/26/84
  5. Grant07/30/85
  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: 06/02/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Comercial e Industrial Petropasy Ltda.

SP, BR

Inventors

G. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

06/02/1987

RPI 867

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

04/16/1985

RPI 756

Deferimento

#9.1

12/26/1984

RPI 740

Solicitação de exame técnico

#4.1

06/14/1983

RPI 660

Publicação antecipada

#3.2

11/30/1982

RPI 632

Pedido de patente depositado

#2.1

10/05/1982

RPI 624

Carta-patente expirada

#21.1

Patente extinta em 19/08/97

07/01/2008

RPI 1956

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